/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 09:46:11,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 09:46:11,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 09:46:11,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 09:46:11,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 09:46:11,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 09:46:11,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 09:46:11,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 09:46:11,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 09:46:11,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 09:46:11,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 09:46:11,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 09:46:11,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 09:46:11,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 09:46:11,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 09:46:11,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 09:46:11,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 09:46:11,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 09:46:11,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 09:46:11,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 09:46:11,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 09:46:11,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 09:46:11,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 09:46:11,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 09:46:11,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 09:46:11,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 09:46:11,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 09:46:11,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 09:46:11,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 09:46:11,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 09:46:11,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 09:46:11,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 09:46:11,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 09:46:11,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 09:46:11,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 09:46:11,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 09:46:11,386 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-Separate.epf [2022-01-18 09:46:11,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 09:46:11,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 09:46:11,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 09:46:11,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 09:46:11,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 09:46:11,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 09:46:11,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 09:46:11,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 09:46:11,403 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 09:46:11,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 09:46:11,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 09:46:11,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 09:46:11,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 09:46:11,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 09:46:11,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 09:46:11,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 09:46:11,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 09:46:11,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:46:11,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 09:46:11,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 09:46:11,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 09:46:11,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 09:46:11,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 09:46:11,406 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 09:46:11,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 09:46:11,406 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 09:46:11,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 09:46:11,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 09:46:11,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 09:46:11,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 09:46:11,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 09:46:11,570 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 09:46:11,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-01-18 09:46:11,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6759edc6f/7fa3eb58e8cf4be8bae71cd37a8beb75/FLAG4182c0d64 [2022-01-18 09:46:12,003 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 09:46:12,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-01-18 09:46:12,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6759edc6f/7fa3eb58e8cf4be8bae71cd37a8beb75/FLAG4182c0d64 [2022-01-18 09:46:12,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6759edc6f/7fa3eb58e8cf4be8bae71cd37a8beb75 [2022-01-18 09:46:12,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 09:46:12,026 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 09:46:12,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 09:46:12,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 09:46:12,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 09:46:12,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b576dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12, skipping insertion in model container [2022-01-18 09:46:12,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 09:46:12,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 09:46:12,186 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-18 09:46:12,351 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] [2022-01-18 09:46:12,355 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] [2022-01-18 09:46:12,356 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] [2022-01-18 09:46:12,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:46:12,373 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 09:46:12,385 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-18 09:46:12,411 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] [2022-01-18 09:46:12,412 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] [2022-01-18 09:46:12,412 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] [2022-01-18 09:46:12,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:46:12,447 INFO L208 MainTranslator]: Completed translation [2022-01-18 09:46:12,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12 WrapperNode [2022-01-18 09:46:12,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 09:46:12,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 09:46:12,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 09:46:12,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 09:46:12,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,503 INFO L137 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2022-01-18 09:46:12,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 09:46:12,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 09:46:12,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 09:46:12,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 09:46:12,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 09:46:12,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 09:46:12,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 09:46:12,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 09:46:12,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (1/1) ... [2022-01-18 09:46:12,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:46:12,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 09:46:12,563 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) [2022-01-18 09:46:12,570 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 [2022-01-18 09:46:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-01-18 09:46:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-01-18 09:46:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 09:46:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 09:46:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 09:46:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 09:46:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 09:46:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 09:46:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 09:46:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 09:46:12,605 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 09:46:12,692 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 09:46:12,693 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 09:46:12,865 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 09:46:12,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 09:46:12,871 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 09:46:12,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:46:12 BoogieIcfgContainer [2022-01-18 09:46:12,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 09:46:12,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 09:46:12,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 09:46:12,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 09:46:12,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 09:46:12" (1/3) ... [2022-01-18 09:46:12,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15624089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:46:12, skipping insertion in model container [2022-01-18 09:46:12,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:46:12" (2/3) ... [2022-01-18 09:46:12,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15624089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:46:12, skipping insertion in model container [2022-01-18 09:46:12,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:46:12" (3/3) ... [2022-01-18 09:46:12,878 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-01-18 09:46:12,881 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 09:46:12,881 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 09:46:12,881 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-18 09:46:12,881 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 09:46:12,910 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,910 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,910 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,910 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,910 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,910 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,911 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,912 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,912 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,912 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,912 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,912 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,912 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,912 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,913 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,913 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,913 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,913 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,913 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,913 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,914 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,915 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,916 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,917 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,918 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,919 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,920 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,920 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,920 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,920 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,920 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,920 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,920 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,920 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,921 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,921 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,921 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,921 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,921 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,921 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,921 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,922 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,923 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,924 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,925 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,925 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,925 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,925 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,925 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,925 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,925 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,926 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,926 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,926 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,926 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,926 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,926 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,927 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,928 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,929 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,930 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,931 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,932 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,932 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,932 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,932 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,932 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,932 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,932 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,932 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,933 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,934 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,934 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,934 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,934 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,934 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,934 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,935 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,935 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,935 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,935 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,935 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,935 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,936 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,936 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,936 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,936 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,936 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,936 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,937 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,937 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,937 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,937 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,937 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,937 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,937 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,937 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,938 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,939 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,939 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,939 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,939 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,939 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,939 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,939 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,939 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,940 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,940 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,940 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,942 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,942 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,942 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,942 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,942 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,943 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,944 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,945 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,945 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,945 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:46:12,947 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-18 09:46:12,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 09:46:12,980 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 [2022-01-18 09:46:12,980 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-18 09:46:12,992 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 152 places, 158 transitions, 324 flow [2022-01-18 09:46:13,078 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) [2022-01-18 09:46:13,083 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) [2022-01-18 09:46:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 09:46:13,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:13,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:13,090 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)] === [2022-01-18 09:46:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash 847621616, now seen corresponding path program 1 times [2022-01-18 09:46:13,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:13,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29524311] [2022-01-18 09:46:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:13,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:13,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:13,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29524311] [2022-01-18 09:46:13,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29524311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:13,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:13,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 09:46:13,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897598216] [2022-01-18 09:46:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:13,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 09:46:13,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:13,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 09:46:13,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 09:46:13,290 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) [2022-01-18 09:46:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:13,336 INFO L93 Difference]: Finished difference Result 2540 states and 5152 transitions. [2022-01-18 09:46:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 09:46:13,338 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 [2022-01-18 09:46:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:13,361 INFO L225 Difference]: With dead ends: 2540 [2022-01-18 09:46:13,361 INFO L226 Difference]: Without dead ends: 2540 [2022-01-18 09:46:13,366 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 [2022-01-18 09:46:13,369 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 [2022-01-18 09:46:13,370 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] [2022-01-18 09:46:13,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-01-18 09:46:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2540. [2022-01-18 09:46:13,462 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) [2022-01-18 09:46:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 5152 transitions. [2022-01-18 09:46:13,469 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 5152 transitions. Word has length 40 [2022-01-18 09:46:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:13,469 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 5152 transitions. [2022-01-18 09:46:13,470 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) [2022-01-18 09:46:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 5152 transitions. [2022-01-18 09:46:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 09:46:13,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:13,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:13,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 09:46:13,472 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)] === [2022-01-18 09:46:13,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:13,474 INFO L85 PathProgramCache]: Analyzing trace with hash 506434889, now seen corresponding path program 1 times [2022-01-18 09:46:13,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:13,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254301640] [2022-01-18 09:46:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:13,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:13,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:13,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254301640] [2022-01-18 09:46:13,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254301640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:13,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:13,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 09:46:13,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964813544] [2022-01-18 09:46:13,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:13,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 09:46:13,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 09:46:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 09:46:13,553 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) [2022-01-18 09:46:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:13,601 INFO L93 Difference]: Finished difference Result 4136 states and 8424 transitions. [2022-01-18 09:46:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 09:46:13,601 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 [2022-01-18 09:46:13,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:13,613 INFO L225 Difference]: With dead ends: 4136 [2022-01-18 09:46:13,614 INFO L226 Difference]: Without dead ends: 4136 [2022-01-18 09:46:13,614 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 [2022-01-18 09:46:13,615 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 [2022-01-18 09:46:13,615 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] [2022-01-18 09:46:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2022-01-18 09:46:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3148. [2022-01-18 09:46:13,678 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) [2022-01-18 09:46:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 6422 transitions. [2022-01-18 09:46:13,687 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 6422 transitions. Word has length 41 [2022-01-18 09:46:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:13,687 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 6422 transitions. [2022-01-18 09:46:13,687 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) [2022-01-18 09:46:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 6422 transitions. [2022-01-18 09:46:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 09:46:13,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:13,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:13,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 09:46:13,694 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)] === [2022-01-18 09:46:13,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash -654644372, now seen corresponding path program 1 times [2022-01-18 09:46:13,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:13,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362470581] [2022-01-18 09:46:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:13,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:14,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:14,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362470581] [2022-01-18 09:46:14,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362470581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:14,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:14,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 09:46:14,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962773276] [2022-01-18 09:46:14,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:14,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 09:46:14,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:14,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 09:46:14,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-01-18 09:46:14,120 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) [2022-01-18 09:46:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:15,526 INFO L93 Difference]: Finished difference Result 3509 states and 7163 transitions. [2022-01-18 09:46:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 09:46:15,527 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 [2022-01-18 09:46:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:15,537 INFO L225 Difference]: With dead ends: 3509 [2022-01-18 09:46:15,538 INFO L226 Difference]: Without dead ends: 3353 [2022-01-18 09:46:15,540 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 [2022-01-18 09:46:15,543 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 [2022-01-18 09:46:15,544 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] [2022-01-18 09:46:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2022-01-18 09:46:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3088. [2022-01-18 09:46:15,592 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) [2022-01-18 09:46:15,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 6311 transitions. [2022-01-18 09:46:15,600 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 6311 transitions. Word has length 74 [2022-01-18 09:46:15,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:15,601 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 6311 transitions. [2022-01-18 09:46:15,601 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) [2022-01-18 09:46:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 6311 transitions. [2022-01-18 09:46:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:46:15,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:15,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:15,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 09:46:15,608 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)] === [2022-01-18 09:46:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -137095055, now seen corresponding path program 1 times [2022-01-18 09:46:15,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:15,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562748110] [2022-01-18 09:46:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:15,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:16,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:16,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562748110] [2022-01-18 09:46:16,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562748110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:16,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:16,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:46:16,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985380133] [2022-01-18 09:46:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:16,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:46:16,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:16,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:46:16,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:46:16,260 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) [2022-01-18 09:46:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:21,908 INFO L93 Difference]: Finished difference Result 4311 states and 8834 transitions. [2022-01-18 09:46:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 09:46:21,908 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 [2022-01-18 09:46:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:21,920 INFO L225 Difference]: With dead ends: 4311 [2022-01-18 09:46:21,921 INFO L226 Difference]: Without dead ends: 4311 [2022-01-18 09:46:21,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1453, Invalid=4247, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:46:21,922 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 [2022-01-18 09:46:21,923 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] [2022-01-18 09:46:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-01-18 09:46:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3439. [2022-01-18 09:46:21,974 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) [2022-01-18 09:46:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 7037 transitions. [2022-01-18 09:46:21,981 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 7037 transitions. Word has length 96 [2022-01-18 09:46:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:21,982 INFO L470 AbstractCegarLoop]: Abstraction has 3439 states and 7037 transitions. [2022-01-18 09:46:21,982 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) [2022-01-18 09:46:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 7037 transitions. [2022-01-18 09:46:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:46:21,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:21,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:21,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 09:46:21,985 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)] === [2022-01-18 09:46:21,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:21,986 INFO L85 PathProgramCache]: Analyzing trace with hash -277531331, now seen corresponding path program 2 times [2022-01-18 09:46:21,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:21,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208169666] [2022-01-18 09:46:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:21,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:22,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:22,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208169666] [2022-01-18 09:46:22,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208169666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:22,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:22,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:46:22,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035999666] [2022-01-18 09:46:22,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:22,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:46:22,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:22,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:46:22,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:46:22,559 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) [2022-01-18 09:46:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:27,790 INFO L93 Difference]: Finished difference Result 4308 states and 8822 transitions. [2022-01-18 09:46:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 09:46:27,790 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 [2022-01-18 09:46:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:27,802 INFO L225 Difference]: With dead ends: 4308 [2022-01-18 09:46:27,802 INFO L226 Difference]: Without dead ends: 4308 [2022-01-18 09:46:27,804 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 [2022-01-18 09:46:27,804 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, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:46:27,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 4248 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:46:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2022-01-18 09:46:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3443. [2022-01-18 09:46:27,854 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) [2022-01-18 09:46:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 7045 transitions. [2022-01-18 09:46:27,860 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 7045 transitions. Word has length 96 [2022-01-18 09:46:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:27,861 INFO L470 AbstractCegarLoop]: Abstraction has 3443 states and 7045 transitions. [2022-01-18 09:46:27,861 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) [2022-01-18 09:46:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 7045 transitions. [2022-01-18 09:46:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:46:27,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:27,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:27,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 09:46:27,864 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)] === [2022-01-18 09:46:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:27,865 INFO L85 PathProgramCache]: Analyzing trace with hash 641947087, now seen corresponding path program 3 times [2022-01-18 09:46:27,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:27,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577385339] [2022-01-18 09:46:27,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:27,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:28,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:28,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577385339] [2022-01-18 09:46:28,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577385339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:28,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:28,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:46:28,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710807187] [2022-01-18 09:46:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:28,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:46:28,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:46:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:46:28,572 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) [2022-01-18 09:46:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:34,257 INFO L93 Difference]: Finished difference Result 4303 states and 8811 transitions. [2022-01-18 09:46:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:46:34,258 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 [2022-01-18 09:46:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:34,268 INFO L225 Difference]: With dead ends: 4303 [2022-01-18 09:46:34,269 INFO L226 Difference]: Without dead ends: 4303 [2022-01-18 09:46:34,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1386, Invalid=3444, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 09:46:34,270 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1356 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:46:34,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1356 Valid, 4246 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:46:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2022-01-18 09:46:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 3447. [2022-01-18 09:46:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 3444 states have (on average 2.047909407665505) internal successors, (7053), 3446 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:46:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 7053 transitions. [2022-01-18 09:46:34,326 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 7053 transitions. Word has length 96 [2022-01-18 09:46:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:34,326 INFO L470 AbstractCegarLoop]: Abstraction has 3447 states and 7053 transitions. [2022-01-18 09:46:34,326 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) [2022-01-18 09:46:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 7053 transitions. [2022-01-18 09:46:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:46:34,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:34,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:34,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 09:46:34,331 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)] === [2022-01-18 09:46:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1727541067, now seen corresponding path program 4 times [2022-01-18 09:46:34,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:34,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861462344] [2022-01-18 09:46:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:34,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:34,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:34,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861462344] [2022-01-18 09:46:34,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861462344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:34,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:34,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:46:34,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790034725] [2022-01-18 09:46:34,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:34,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:46:34,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:46:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:46:34,863 INFO L87 Difference]: Start difference. First operand 3447 states and 7053 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:46:39,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:39,496 INFO L93 Difference]: Finished difference Result 4320 states and 8838 transitions. [2022-01-18 09:46:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:46:39,497 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 [2022-01-18 09:46:39,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:39,503 INFO L225 Difference]: With dead ends: 4320 [2022-01-18 09:46:39,503 INFO L226 Difference]: Without dead ends: 4320 [2022-01-18 09:46:39,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1216, Invalid=3614, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 09:46:39,505 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1181 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:46:39,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 4616 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 09:46:39,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2022-01-18 09:46:39,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 3522. [2022-01-18 09:46:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3519 states have (on average 2.048025007104291) internal successors, (7207), 3521 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:46:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 7207 transitions. [2022-01-18 09:46:39,553 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 7207 transitions. Word has length 96 [2022-01-18 09:46:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:39,554 INFO L470 AbstractCegarLoop]: Abstraction has 3522 states and 7207 transitions. [2022-01-18 09:46:39,554 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) [2022-01-18 09:46:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 7207 transitions. [2022-01-18 09:46:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:46:39,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:39,557 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] [2022-01-18 09:46:39,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 09:46:39,557 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)] === [2022-01-18 09:46:39,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:39,557 INFO L85 PathProgramCache]: Analyzing trace with hash -808062649, now seen corresponding path program 5 times [2022-01-18 09:46:39,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:39,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602238479] [2022-01-18 09:46:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:39,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:40,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:40,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602238479] [2022-01-18 09:46:40,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602238479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:40,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:40,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:46:40,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739915666] [2022-01-18 09:46:40,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:40,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:46:40,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:40,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:46:40,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:46:40,238 INFO L87 Difference]: Start difference. First operand 3522 states and 7207 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:46:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:45,141 INFO L93 Difference]: Finished difference Result 4304 states and 8804 transitions. [2022-01-18 09:46:45,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 09:46:45,141 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 [2022-01-18 09:46:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:45,147 INFO L225 Difference]: With dead ends: 4304 [2022-01-18 09:46:45,147 INFO L226 Difference]: Without dead ends: 4304 [2022-01-18 09:46:45,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1178, Invalid=2982, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 09:46:45,149 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1269 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 4921 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:46:45,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 4921 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:46:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2022-01-18 09:46:45,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 3720. [2022-01-18 09:46:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3717 states have (on average 2.0497713209577615) internal successors, (7619), 3719 states have internal predecessors, (7619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:46:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 7619 transitions. [2022-01-18 09:46:45,211 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 7619 transitions. Word has length 96 [2022-01-18 09:46:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:45,211 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 7619 transitions. [2022-01-18 09:46:45,212 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) [2022-01-18 09:46:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 7619 transitions. [2022-01-18 09:46:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:46:45,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:45,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:45,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 09:46:45,215 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)] === [2022-01-18 09:46:45,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:45,216 INFO L85 PathProgramCache]: Analyzing trace with hash 393725621, now seen corresponding path program 6 times [2022-01-18 09:46:45,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:45,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198489222] [2022-01-18 09:46:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:45,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:45,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198489222] [2022-01-18 09:46:45,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198489222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:45,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:45,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:46:45,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791283508] [2022-01-18 09:46:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:45,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:46:45,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:46:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:46:45,815 INFO L87 Difference]: Start difference. First operand 3720 states and 7619 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) [2022-01-18 09:46:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:46:50,757 INFO L93 Difference]: Finished difference Result 4381 states and 8960 transitions. [2022-01-18 09:46:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 09:46:50,757 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 [2022-01-18 09:46:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:46:50,763 INFO L225 Difference]: With dead ends: 4381 [2022-01-18 09:46:50,763 INFO L226 Difference]: Without dead ends: 4381 [2022-01-18 09:46:50,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1205, Invalid=3085, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 09:46:50,765 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1275 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 4662 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:46:50,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 4662 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:46:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-01-18 09:46:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3695. [2022-01-18 09:46:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 3692 states have (on average 2.049024918743229) internal successors, (7565), 3694 states have internal predecessors, (7565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:46:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 7565 transitions. [2022-01-18 09:46:50,814 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 7565 transitions. Word has length 96 [2022-01-18 09:46:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:46:50,814 INFO L470 AbstractCegarLoop]: Abstraction has 3695 states and 7565 transitions. [2022-01-18 09:46:50,815 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) [2022-01-18 09:46:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 7565 transitions. [2022-01-18 09:46:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:46:50,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:46:50,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:46:50,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 09:46:50,818 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)] === [2022-01-18 09:46:50,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:46:50,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1829581135, now seen corresponding path program 7 times [2022-01-18 09:46:50,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:46:50,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629265035] [2022-01-18 09:46:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:46:50,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:46:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:46:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:46:51,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:46:51,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629265035] [2022-01-18 09:46:51,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629265035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:46:51,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:46:51,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:46:51,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680345771] [2022-01-18 09:46:51,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:46:51,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:46:51,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:46:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:46:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:46:51,354 INFO L87 Difference]: Start difference. First operand 3695 states and 7565 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) [2022-01-18 09:47:00,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:00,922 INFO L93 Difference]: Finished difference Result 4597 states and 9402 transitions. [2022-01-18 09:47:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 09:47:00,922 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 [2022-01-18 09:47:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:00,929 INFO L225 Difference]: With dead ends: 4597 [2022-01-18 09:47:00,929 INFO L226 Difference]: Without dead ends: 4597 [2022-01-18 09:47:00,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2967, Invalid=7335, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 09:47:00,931 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1409 mSDsluCounter, 4765 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:00,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 5152 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 09:47:00,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2022-01-18 09:47:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 3621. [2022-01-18 09:47:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3618 states have (on average 2.0472636815920398) internal successors, (7407), 3620 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 7407 transitions. [2022-01-18 09:47:00,979 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 7407 transitions. Word has length 96 [2022-01-18 09:47:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:00,979 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 7407 transitions. [2022-01-18 09:47:00,979 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) [2022-01-18 09:47:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 7407 transitions. [2022-01-18 09:47:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:00,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:00,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:47:00,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 09:47:00,983 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)] === [2022-01-18 09:47:00,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1757374095, now seen corresponding path program 8 times [2022-01-18 09:47:00,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:00,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159894492] [2022-01-18 09:47:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:00,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:01,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:01,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159894492] [2022-01-18 09:47:01,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159894492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:01,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:01,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:47:01,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584118141] [2022-01-18 09:47:01,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:01,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:47:01,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:47:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:47:01,470 INFO L87 Difference]: Start difference. First operand 3621 states and 7407 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) [2022-01-18 09:47:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:06,765 INFO L93 Difference]: Finished difference Result 5130 states and 10541 transitions. [2022-01-18 09:47:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 09:47:06,765 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 [2022-01-18 09:47:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:06,772 INFO L225 Difference]: With dead ends: 5130 [2022-01-18 09:47:06,772 INFO L226 Difference]: Without dead ends: 5130 [2022-01-18 09:47:06,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1452, Invalid=4248, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:47:06,774 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1324 mSDsluCounter, 4231 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:06,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 4576 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 09:47:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5130 states. [2022-01-18 09:47:06,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5130 to 3855. [2022-01-18 09:47:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 3852 states have (on average 2.0558151609553477) internal successors, (7919), 3854 states have internal predecessors, (7919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 7919 transitions. [2022-01-18 09:47:06,824 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 7919 transitions. Word has length 96 [2022-01-18 09:47:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:06,824 INFO L470 AbstractCegarLoop]: Abstraction has 3855 states and 7919 transitions. [2022-01-18 09:47:06,825 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) [2022-01-18 09:47:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 7919 transitions. [2022-01-18 09:47:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:06,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:06,828 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] [2022-01-18 09:47:06,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 09:47:06,828 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)] === [2022-01-18 09:47:06,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:06,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1616937819, now seen corresponding path program 9 times [2022-01-18 09:47:06,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:06,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931081129] [2022-01-18 09:47:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:06,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:07,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931081129] [2022-01-18 09:47:07,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931081129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:07,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:07,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:47:07,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491440880] [2022-01-18 09:47:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:07,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:47:07,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:47:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:47:07,329 INFO L87 Difference]: Start difference. First operand 3855 states and 7919 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) [2022-01-18 09:47:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:12,467 INFO L93 Difference]: Finished difference Result 5127 states and 10529 transitions. [2022-01-18 09:47:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 09:47:12,468 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 [2022-01-18 09:47:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:12,474 INFO L225 Difference]: With dead ends: 5127 [2022-01-18 09:47:12,475 INFO L226 Difference]: Without dead ends: 5127 [2022-01-18 09:47:12,476 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 [2022-01-18 09:47:12,476 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1250 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 4416 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:12,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 4416 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1905 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 09:47:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2022-01-18 09:47:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 3859. [2022-01-18 09:47:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3856 states have (on average 2.0557572614107884) internal successors, (7927), 3858 states have internal predecessors, (7927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 7927 transitions. [2022-01-18 09:47:12,528 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 7927 transitions. Word has length 96 [2022-01-18 09:47:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:12,528 INFO L470 AbstractCegarLoop]: Abstraction has 3859 states and 7927 transitions. [2022-01-18 09:47:12,528 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) [2022-01-18 09:47:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 7927 transitions. [2022-01-18 09:47:12,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:12,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:12,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:47:12,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 09:47:12,532 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)] === [2022-01-18 09:47:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:12,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1758551059, now seen corresponding path program 10 times [2022-01-18 09:47:12,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:12,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831632536] [2022-01-18 09:47:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:12,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:13,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:13,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831632536] [2022-01-18 09:47:13,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831632536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:13,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:13,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:47:13,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122353291] [2022-01-18 09:47:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:13,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:47:13,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:13,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:47:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:47:13,061 INFO L87 Difference]: Start difference. First operand 3859 states and 7927 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) [2022-01-18 09:47:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:18,371 INFO L93 Difference]: Finished difference Result 5168 states and 10612 transitions. [2022-01-18 09:47:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:47:18,371 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 [2022-01-18 09:47:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:18,376 INFO L225 Difference]: With dead ends: 5168 [2022-01-18 09:47:18,377 INFO L226 Difference]: Without dead ends: 5168 [2022-01-18 09:47:18,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1386, Invalid=3444, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 09:47:18,378 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1344 mSDsluCounter, 4179 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 4530 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:18,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1344 Valid, 4530 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:47:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2022-01-18 09:47:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 3870. [2022-01-18 09:47:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3867 states have (on average 2.055598655288337) internal successors, (7949), 3869 states have internal predecessors, (7949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 7949 transitions. [2022-01-18 09:47:18,445 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 7949 transitions. Word has length 96 [2022-01-18 09:47:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:18,446 INFO L470 AbstractCegarLoop]: Abstraction has 3870 states and 7949 transitions. [2022-01-18 09:47:18,446 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) [2022-01-18 09:47:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 7949 transitions. [2022-01-18 09:47:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:18,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:18,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:47:18,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 09:47:18,449 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)] === [2022-01-18 09:47:18,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash 166928083, now seen corresponding path program 11 times [2022-01-18 09:47:18,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:18,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867436131] [2022-01-18 09:47:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:18,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:18,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867436131] [2022-01-18 09:47:18,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867436131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:18,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:18,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:47:18,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517031745] [2022-01-18 09:47:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:18,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:47:18,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:18,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:47:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:47:18,920 INFO L87 Difference]: Start difference. First operand 3870 states and 7949 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) [2022-01-18 09:47:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:23,606 INFO L93 Difference]: Finished difference Result 5042 states and 10344 transitions. [2022-01-18 09:47:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:47:23,606 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 [2022-01-18 09:47:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:23,611 INFO L225 Difference]: With dead ends: 5042 [2022-01-18 09:47:23,612 INFO L226 Difference]: Without dead ends: 5042 [2022-01-18 09:47:23,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1215, Invalid=3615, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 09:47:23,612 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1209 mSDsluCounter, 4611 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:23,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 4963 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:47:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5042 states. [2022-01-18 09:47:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 3922. [2022-01-18 09:47:23,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3919 states have (on average 2.054605766777239) internal successors, (8052), 3921 states have internal predecessors, (8052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 8052 transitions. [2022-01-18 09:47:23,662 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 8052 transitions. Word has length 96 [2022-01-18 09:47:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:23,662 INFO L470 AbstractCegarLoop]: Abstraction has 3922 states and 8052 transitions. [2022-01-18 09:47:23,662 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) [2022-01-18 09:47:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 8052 transitions. [2022-01-18 09:47:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:23,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:23,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:47:23,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 09:47:23,666 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)] === [2022-01-18 09:47:23,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:23,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1086406501, now seen corresponding path program 12 times [2022-01-18 09:47:23,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:23,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259041175] [2022-01-18 09:47:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:23,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:24,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:24,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259041175] [2022-01-18 09:47:24,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259041175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:24,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:24,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:47:24,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718125769] [2022-01-18 09:47:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:24,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:47:24,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:47:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:47:24,155 INFO L87 Difference]: Start difference. First operand 3922 states and 8052 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) [2022-01-18 09:47:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:28,860 INFO L93 Difference]: Finished difference Result 5004 states and 10266 transitions. [2022-01-18 09:47:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 09:47:28,866 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 [2022-01-18 09:47:28,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:28,871 INFO L225 Difference]: With dead ends: 5004 [2022-01-18 09:47:28,871 INFO L226 Difference]: Without dead ends: 5004 [2022-01-18 09:47:28,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1179, Invalid=2981, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 09:47:28,872 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1193 mSDsluCounter, 3893 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:28,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 4240 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 09:47:28,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2022-01-18 09:47:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 3915. [2022-01-18 09:47:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3915 states, 3912 states have (on average 2.0501022494887526) internal successors, (8020), 3914 states have internal predecessors, (8020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 8020 transitions. [2022-01-18 09:47:28,919 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 8020 transitions. Word has length 96 [2022-01-18 09:47:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:28,919 INFO L470 AbstractCegarLoop]: Abstraction has 3915 states and 8020 transitions. [2022-01-18 09:47:28,919 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) [2022-01-18 09:47:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 8020 transitions. [2022-01-18 09:47:28,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:28,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:28,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:47:28,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 09:47:28,923 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)] === [2022-01-18 09:47:28,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:28,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2006772525, now seen corresponding path program 13 times [2022-01-18 09:47:28,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:28,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011896513] [2022-01-18 09:47:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:28,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:29,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:29,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011896513] [2022-01-18 09:47:29,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011896513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:29,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:29,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:47:29,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110699048] [2022-01-18 09:47:29,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:29,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:47:29,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:47:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:47:29,534 INFO L87 Difference]: Start difference. First operand 3915 states and 8020 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) [2022-01-18 09:47:34,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:34,705 INFO L93 Difference]: Finished difference Result 5041 states and 10334 transitions. [2022-01-18 09:47:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 09:47:34,705 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 [2022-01-18 09:47:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:34,710 INFO L225 Difference]: With dead ends: 5041 [2022-01-18 09:47:34,710 INFO L226 Difference]: Without dead ends: 5041 [2022-01-18 09:47:34,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1203, Invalid=3087, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 09:47:34,711 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1171 mSDsluCounter, 4496 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 4846 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:34,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 4846 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:47:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5041 states. [2022-01-18 09:47:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5041 to 3915. [2022-01-18 09:47:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3915 states, 3912 states have (on average 2.0501022494887526) internal successors, (8020), 3914 states have internal predecessors, (8020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 8020 transitions. [2022-01-18 09:47:34,755 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 8020 transitions. Word has length 96 [2022-01-18 09:47:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:34,755 INFO L470 AbstractCegarLoop]: Abstraction has 3915 states and 8020 transitions. [2022-01-18 09:47:34,756 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) [2022-01-18 09:47:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 8020 transitions. [2022-01-18 09:47:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:34,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:34,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:47:34,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 09:47:34,759 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)] === [2022-01-18 09:47:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:34,759 INFO L85 PathProgramCache]: Analyzing trace with hash -570917011, now seen corresponding path program 14 times [2022-01-18 09:47:34,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:34,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520397045] [2022-01-18 09:47:34,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:34,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:35,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520397045] [2022-01-18 09:47:35,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520397045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:35,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:35,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:47:35,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466560254] [2022-01-18 09:47:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:35,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:47:35,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:35,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:47:35,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:47:35,272 INFO L87 Difference]: Start difference. First operand 3915 states and 8020 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) [2022-01-18 09:47:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:46,838 INFO L93 Difference]: Finished difference Result 5536 states and 11345 transitions. [2022-01-18 09:47:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 09:47:46,838 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 [2022-01-18 09:47:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:46,844 INFO L225 Difference]: With dead ends: 5536 [2022-01-18 09:47:46,844 INFO L226 Difference]: Without dead ends: 5536 [2022-01-18 09:47:46,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3768, Invalid=9342, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 09:47:46,845 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 1502 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:46,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 5196 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 09:47:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2022-01-18 09:47:46,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 3915. [2022-01-18 09:47:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3915 states, 3912 states have (on average 2.0501022494887526) internal successors, (8020), 3914 states have internal predecessors, (8020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 8020 transitions. [2022-01-18 09:47:46,907 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 8020 transitions. Word has length 96 [2022-01-18 09:47:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:46,907 INFO L470 AbstractCegarLoop]: Abstraction has 3915 states and 8020 transitions. [2022-01-18 09:47:46,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 8020 transitions. [2022-01-18 09:47:46,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:46,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:46,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:47:46,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 09:47:46,911 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)] === [2022-01-18 09:47:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2037360013, now seen corresponding path program 15 times [2022-01-18 09:47:46,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:46,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953921166] [2022-01-18 09:47:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:46,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:47,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:47,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953921166] [2022-01-18 09:47:47,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953921166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:47,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:47,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-18 09:47:47,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161046810] [2022-01-18 09:47:47,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:47,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 09:47:47,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:47,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 09:47:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-01-18 09:47:47,366 INFO L87 Difference]: Start difference. First operand 3915 states and 8020 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) [2022-01-18 09:47:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:47:57,048 INFO L93 Difference]: Finished difference Result 5069 states and 10377 transitions. [2022-01-18 09:47:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 09:47:57,049 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 [2022-01-18 09:47:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:47:57,054 INFO L225 Difference]: With dead ends: 5069 [2022-01-18 09:47:57,055 INFO L226 Difference]: Without dead ends: 5069 [2022-01-18 09:47:57,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=3334, Invalid=8222, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 09:47:57,058 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1478 mSDsluCounter, 4559 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 4941 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 09:47:57,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 4941 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 09:47:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2022-01-18 09:47:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 3548. [2022-01-18 09:47:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3545 states have (on average 2.045416078984485) internal successors, (7251), 3547 states have internal predecessors, (7251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:47:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 7251 transitions. [2022-01-18 09:47:57,100 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 7251 transitions. Word has length 96 [2022-01-18 09:47:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:47:57,100 INFO L470 AbstractCegarLoop]: Abstraction has 3548 states and 7251 transitions. [2022-01-18 09:47:57,100 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) [2022-01-18 09:47:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 7251 transitions. [2022-01-18 09:47:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:47:57,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:47:57,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:47:57,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 09:47:57,106 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)] === [2022-01-18 09:47:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:47:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash 155436657, now seen corresponding path program 16 times [2022-01-18 09:47:57,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:47:57,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674034712] [2022-01-18 09:47:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:47:57,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:47:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:47:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:47:57,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:47:57,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674034712] [2022-01-18 09:47:57,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674034712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:47:57,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:47:57,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:47:57,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108885701] [2022-01-18 09:47:57,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:47:57,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:47:57,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:47:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:47:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:47:57,592 INFO L87 Difference]: Start difference. First operand 3548 states and 7251 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) [2022-01-18 09:48:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:48:02,977 INFO L93 Difference]: Finished difference Result 4667 states and 9586 transitions. [2022-01-18 09:48:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 09:48:02,979 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 [2022-01-18 09:48:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:48:02,984 INFO L225 Difference]: With dead ends: 4667 [2022-01-18 09:48:02,984 INFO L226 Difference]: Without dead ends: 4667 [2022-01-18 09:48:02,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1451, Invalid=4249, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:48:02,985 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1379 mSDsluCounter, 4608 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 4946 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:48:02,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 4946 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:48:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2022-01-18 09:48:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 3772. [2022-01-18 09:48:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 3769 states have (on average 2.0543910851684797) internal successors, (7743), 3771 states have internal predecessors, (7743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 7743 transitions. [2022-01-18 09:48:03,022 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 7743 transitions. Word has length 96 [2022-01-18 09:48:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:48:03,022 INFO L470 AbstractCegarLoop]: Abstraction has 3772 states and 7743 transitions. [2022-01-18 09:48:03,022 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) [2022-01-18 09:48:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 7743 transitions. [2022-01-18 09:48:03,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:48:03,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:48:03,025 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] [2022-01-18 09:48:03,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 09:48:03,025 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)] === [2022-01-18 09:48:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:48:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash 15000381, now seen corresponding path program 17 times [2022-01-18 09:48:03,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:48:03,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190390014] [2022-01-18 09:48:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:48:03,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:48:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:48:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:48:03,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:48:03,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190390014] [2022-01-18 09:48:03,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190390014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:48:03,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:48:03,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:48:03,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518242723] [2022-01-18 09:48:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:48:03,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:48:03,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:48:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:48:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:48:03,511 INFO L87 Difference]: Start difference. First operand 3772 states and 7743 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) [2022-01-18 09:48:08,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:48:08,834 INFO L93 Difference]: Finished difference Result 4664 states and 9574 transitions. [2022-01-18 09:48:08,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 09:48:08,834 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 [2022-01-18 09:48:08,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:48:08,839 INFO L225 Difference]: With dead ends: 4664 [2022-01-18 09:48:08,839 INFO L226 Difference]: Without dead ends: 4664 [2022-01-18 09:48:08,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1432, Invalid=4118, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:48:08,840 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1186 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 5109 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:48:08,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 5109 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:48:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2022-01-18 09:48:08,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3776. [2022-01-18 09:48:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3773 states have (on average 2.0543334216803606) internal successors, (7751), 3775 states have internal predecessors, (7751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 7751 transitions. [2022-01-18 09:48:08,880 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 7751 transitions. Word has length 96 [2022-01-18 09:48:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:48:08,881 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 7751 transitions. [2022-01-18 09:48:08,881 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) [2022-01-18 09:48:08,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 7751 transitions. [2022-01-18 09:48:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:48:08,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:48:08,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:48:08,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 09:48:08,884 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)] === [2022-01-18 09:48:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:48:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash 934478799, now seen corresponding path program 18 times [2022-01-18 09:48:08,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:48:08,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973512563] [2022-01-18 09:48:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:48:08,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:48:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:48:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:48:09,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:48:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973512563] [2022-01-18 09:48:09,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973512563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:48:09,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:48:09,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:48:09,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636432044] [2022-01-18 09:48:09,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:48:09,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:48:09,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:48:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:48:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:48:09,491 INFO L87 Difference]: Start difference. First operand 3776 states and 7751 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) [2022-01-18 09:48:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:48:15,165 INFO L93 Difference]: Finished difference Result 4659 states and 9563 transitions. [2022-01-18 09:48:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:48:15,165 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 [2022-01-18 09:48:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:48:15,169 INFO L225 Difference]: With dead ends: 4659 [2022-01-18 09:48:15,170 INFO L226 Difference]: Without dead ends: 4659 [2022-01-18 09:48:15,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1384, Invalid=3446, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 09:48:15,171 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1448 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 4462 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:48:15,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 4462 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 09:48:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2022-01-18 09:48:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 3780. [2022-01-18 09:48:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3777 states have (on average 2.0542758803283028) internal successors, (7759), 3779 states have internal predecessors, (7759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 7759 transitions. [2022-01-18 09:48:15,206 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 7759 transitions. Word has length 96 [2022-01-18 09:48:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:48:15,207 INFO L470 AbstractCegarLoop]: Abstraction has 3780 states and 7759 transitions. [2022-01-18 09:48:15,207 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) [2022-01-18 09:48:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 7759 transitions. [2022-01-18 09:48:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:48:15,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:48:15,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:48:15,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 09:48:15,210 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)] === [2022-01-18 09:48:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:48:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1435009355, now seen corresponding path program 19 times [2022-01-18 09:48:15,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:48:15,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569783056] [2022-01-18 09:48:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:48:15,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:48:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:48:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:48:15,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:48:15,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569783056] [2022-01-18 09:48:15,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569783056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:48:15,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:48:15,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:48:15,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678902300] [2022-01-18 09:48:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:48:15,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:48:15,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:48:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:48:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:48:15,681 INFO L87 Difference]: Start difference. First operand 3780 states and 7759 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) [2022-01-18 09:48:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:48:20,370 INFO L93 Difference]: Finished difference Result 4576 states and 9383 transitions. [2022-01-18 09:48:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:48:20,371 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 [2022-01-18 09:48:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:48:20,375 INFO L225 Difference]: With dead ends: 4576 [2022-01-18 09:48:20,375 INFO L226 Difference]: Without dead ends: 4576 [2022-01-18 09:48:20,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 09:48:20,376 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1254 mSDsluCounter, 4777 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 5122 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:48:20,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 5122 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:48:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-01-18 09:48:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 3832. [2022-01-18 09:48:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3829 states have (on average 2.0532776181770696) internal successors, (7862), 3831 states have internal predecessors, (7862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 7862 transitions. [2022-01-18 09:48:20,425 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 7862 transitions. Word has length 96 [2022-01-18 09:48:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:48:20,425 INFO L470 AbstractCegarLoop]: Abstraction has 3832 states and 7862 transitions. [2022-01-18 09:48:20,425 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) [2022-01-18 09:48:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 7862 transitions. [2022-01-18 09:48:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:48:20,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:48:20,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:48:20,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 09:48:20,429 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)] === [2022-01-18 09:48:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:48:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash -515530937, now seen corresponding path program 20 times [2022-01-18 09:48:20,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:48:20,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817473971] [2022-01-18 09:48:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:48:20,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:48:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:48:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:48:21,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:48:21,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817473971] [2022-01-18 09:48:21,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817473971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:48:21,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:48:21,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:48:21,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145869629] [2022-01-18 09:48:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:48:21,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:48:21,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:48:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:48:21,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:48:21,015 INFO L87 Difference]: Start difference. First operand 3832 states and 7862 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) [2022-01-18 09:48:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:48:26,166 INFO L93 Difference]: Finished difference Result 4514 states and 9255 transitions. [2022-01-18 09:48:26,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 09:48:26,166 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 [2022-01-18 09:48:26,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:48:26,171 INFO L225 Difference]: With dead ends: 4514 [2022-01-18 09:48:26,171 INFO L226 Difference]: Without dead ends: 4514 [2022-01-18 09:48:26,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1176, Invalid=2984, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 09:48:26,172 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1335 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:48:26,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 4798 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:48:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2022-01-18 09:48:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 3787. [2022-01-18 09:48:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3787 states, 3784 states have (on average 2.049154334038055) internal successors, (7754), 3786 states have internal predecessors, (7754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3787 states to 3787 states and 7754 transitions. [2022-01-18 09:48:26,208 INFO L78 Accepts]: Start accepts. Automaton has 3787 states and 7754 transitions. Word has length 96 [2022-01-18 09:48:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:48:26,208 INFO L470 AbstractCegarLoop]: Abstraction has 3787 states and 7754 transitions. [2022-01-18 09:48:26,209 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) [2022-01-18 09:48:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3787 states and 7754 transitions. [2022-01-18 09:48:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:48:26,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:48:26,212 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] [2022-01-18 09:48:26,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 09:48:26,212 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)] === [2022-01-18 09:48:26,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:48:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash 686257333, now seen corresponding path program 21 times [2022-01-18 09:48:26,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:48:26,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441225925] [2022-01-18 09:48:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:48:26,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:48:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:48:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:48:26,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:48:26,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441225925] [2022-01-18 09:48:26,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441225925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:48:26,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:48:26,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:48:26,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863529768] [2022-01-18 09:48:26,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:48:26,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:48:26,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:48:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:48:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:48:26,816 INFO L87 Difference]: Start difference. First operand 3787 states and 7754 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) [2022-01-18 09:48:31,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:48:31,865 INFO L93 Difference]: Finished difference Result 4578 states and 9379 transitions. [2022-01-18 09:48:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 09:48:31,865 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 [2022-01-18 09:48:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:48:31,870 INFO L225 Difference]: With dead ends: 4578 [2022-01-18 09:48:31,870 INFO L226 Difference]: Without dead ends: 4578 [2022-01-18 09:48:31,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1203, Invalid=3087, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 09:48:31,870 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1164 mSDsluCounter, 4268 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:48:31,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 4611 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:48:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2022-01-18 09:48:31,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3870. [2022-01-18 09:48:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3867 states have (on average 2.048616498577709) internal successors, (7922), 3869 states have internal predecessors, (7922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 7922 transitions. [2022-01-18 09:48:31,908 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 7922 transitions. Word has length 96 [2022-01-18 09:48:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:48:31,908 INFO L470 AbstractCegarLoop]: Abstraction has 3870 states and 7922 transitions. [2022-01-18 09:48:31,908 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) [2022-01-18 09:48:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 7922 transitions. [2022-01-18 09:48:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:48:31,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:48:31,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:48:31,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 09:48:31,911 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)] === [2022-01-18 09:48:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:48:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2122112847, now seen corresponding path program 22 times [2022-01-18 09:48:31,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:48:31,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587115284] [2022-01-18 09:48:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:48:31,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:48:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:48:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:48:32,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:48:32,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587115284] [2022-01-18 09:48:32,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587115284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:48:32,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:48:32,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-18 09:48:32,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599276640] [2022-01-18 09:48:32,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:48:32,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 09:48:32,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:48:32,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 09:48:32,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 09:48:32,450 INFO L87 Difference]: Start difference. First operand 3870 states and 7922 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) [2022-01-18 09:48:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:48:37,851 INFO L93 Difference]: Finished difference Result 4697 states and 9619 transitions. [2022-01-18 09:48:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 09:48:37,852 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 [2022-01-18 09:48:37,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:48:37,865 INFO L225 Difference]: With dead ends: 4697 [2022-01-18 09:48:37,866 INFO L226 Difference]: Without dead ends: 4697 [2022-01-18 09:48:37,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1280, Invalid=3142, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 09:48:37,866 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1199 mSDsluCounter, 4456 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 4806 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:48:37,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1199 Valid, 4806 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:48:37,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2022-01-18 09:48:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 3886. [2022-01-18 09:48:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 3883 states have (on average 2.0484161730620656) internal successors, (7954), 3885 states have internal predecessors, (7954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 7954 transitions. [2022-01-18 09:48:37,900 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 7954 transitions. Word has length 96 [2022-01-18 09:48:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:48:37,901 INFO L470 AbstractCegarLoop]: Abstraction has 3886 states and 7954 transitions. [2022-01-18 09:48:37,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 7954 transitions. [2022-01-18 09:48:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:48:37,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:48:37,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:48:37,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 09:48:37,904 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)] === [2022-01-18 09:48:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:48:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash 435422575, now seen corresponding path program 23 times [2022-01-18 09:48:37,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:48:37,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179160644] [2022-01-18 09:48:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:48:37,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:48:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:48:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:48:38,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:48:38,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179160644] [2022-01-18 09:48:38,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179160644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:48:38,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:48:38,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-18 09:48:38,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773740723] [2022-01-18 09:48:38,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:48:38,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 09:48:38,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:48:38,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 09:48:38,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-01-18 09:48:38,354 INFO L87 Difference]: Start difference. First operand 3886 states and 7954 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) [2022-01-18 09:48:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:48:50,097 INFO L93 Difference]: Finished difference Result 4940 states and 10114 transitions. [2022-01-18 09:48:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 09:48:50,098 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 [2022-01-18 09:48:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:48:50,103 INFO L225 Difference]: With dead ends: 4940 [2022-01-18 09:48:50,103 INFO L226 Difference]: Without dead ends: 4940 [2022-01-18 09:48:50,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2466 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=4244, Invalid=10518, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 09:48:50,104 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 1290 mSDsluCounter, 4542 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 5001 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:48:50,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 5001 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 09:48:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2022-01-18 09:48:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 3548. [2022-01-18 09:48:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3545 states have (on average 2.045416078984485) internal successors, (7251), 3547 states have internal predecessors, (7251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:48:50,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 7251 transitions. [2022-01-18 09:48:50,140 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 7251 transitions. Word has length 96 [2022-01-18 09:48:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:48:50,140 INFO L470 AbstractCegarLoop]: Abstraction has 3548 states and 7251 transitions. [2022-01-18 09:48:50,140 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) [2022-01-18 09:48:50,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 7251 transitions. [2022-01-18 09:48:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 09:48:50,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:48:50,143 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] [2022-01-18 09:48:50,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 09:48:50,143 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)] === [2022-01-18 09:48:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:48:50,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1424536301, now seen corresponding path program 24 times [2022-01-18 09:48:50,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:48:50,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225381167] [2022-01-18 09:48:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:48:50,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:48:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:48:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:48:50,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:48:50,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225381167] [2022-01-18 09:48:50,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225381167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:48:50,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:48:50,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-18 09:48:50,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029551711] [2022-01-18 09:48:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:48:50,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 09:48:50,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:48:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 09:48:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-01-18 09:48:50,584 INFO L87 Difference]: Start difference. First operand 3548 states and 7251 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) [2022-01-18 09:49:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:00,668 INFO L93 Difference]: Finished difference Result 4198 states and 8572 transitions. [2022-01-18 09:49:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 09:49:00,669 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 [2022-01-18 09:49:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:00,673 INFO L225 Difference]: With dead ends: 4198 [2022-01-18 09:49:00,673 INFO L226 Difference]: Without dead ends: 4198 [2022-01-18 09:49:00,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3743, Invalid=9367, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 09:49:00,674 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1422 mSDsluCounter, 3761 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:00,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 4135 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 09:49:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2022-01-18 09:49:00,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3151. [2022-01-18 09:49:00,702 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) [2022-01-18 09:49:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 6437 transitions. [2022-01-18 09:49:00,705 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 6437 transitions. Word has length 96 [2022-01-18 09:49:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:00,706 INFO L470 AbstractCegarLoop]: Abstraction has 3151 states and 6437 transitions. [2022-01-18 09:49:00,706 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) [2022-01-18 09:49:00,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 6437 transitions. [2022-01-18 09:49:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:00,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:00,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:00,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 09:49:00,708 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)] === [2022-01-18 09:49:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:00,708 INFO L85 PathProgramCache]: Analyzing trace with hash -409774949, now seen corresponding path program 1 times [2022-01-18 09:49:00,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:00,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173613415] [2022-01-18 09:49:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:00,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:01,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:01,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173613415] [2022-01-18 09:49:01,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173613415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:01,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:01,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:49:01,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574018010] [2022-01-18 09:49:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:01,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:49:01,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:49:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:49:01,685 INFO L87 Difference]: Start difference. First operand 3151 states and 6437 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) [2022-01-18 09:49:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:07,432 INFO L93 Difference]: Finished difference Result 6181 states and 12714 transitions. [2022-01-18 09:49:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:49:07,432 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 [2022-01-18 09:49:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:07,438 INFO L225 Difference]: With dead ends: 6181 [2022-01-18 09:49:07,439 INFO L226 Difference]: Without dead ends: 6181 [2022-01-18 09:49:07,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1408, Invalid=7148, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 09:49:07,440 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 2117 mSDsluCounter, 9405 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 9934 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:07,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2117 Valid, 9934 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:49:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2022-01-18 09:49:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 4658. [2022-01-18 09:49:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4658 states, 4655 states have (on average 2.05671321160043) internal successors, (9574), 4657 states have internal predecessors, (9574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:49:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4658 states to 4658 states and 9574 transitions. [2022-01-18 09:49:07,490 INFO L78 Accepts]: Start accepts. Automaton has 4658 states and 9574 transitions. Word has length 99 [2022-01-18 09:49:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:07,490 INFO L470 AbstractCegarLoop]: Abstraction has 4658 states and 9574 transitions. [2022-01-18 09:49:07,490 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) [2022-01-18 09:49:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4658 states and 9574 transitions. [2022-01-18 09:49:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:07,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:07,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:07,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 09:49:07,494 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)] === [2022-01-18 09:49:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash 692291031, now seen corresponding path program 2 times [2022-01-18 09:49:07,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:07,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083463053] [2022-01-18 09:49:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:07,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:08,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:08,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083463053] [2022-01-18 09:49:08,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083463053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:08,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:08,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:49:08,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766500943] [2022-01-18 09:49:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:08,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:49:08,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:49:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:49:08,246 INFO L87 Difference]: Start difference. First operand 4658 states and 9574 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) [2022-01-18 09:49:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:12,390 INFO L93 Difference]: Finished difference Result 6614 states and 13584 transitions. [2022-01-18 09:49:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:49:12,390 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 [2022-01-18 09:49:12,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:12,398 INFO L225 Difference]: With dead ends: 6614 [2022-01-18 09:49:12,398 INFO L226 Difference]: Without dead ends: 6614 [2022-01-18 09:49:12,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:49:12,399 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 1629 mSDsluCounter, 8559 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 9084 SdHoareTripleChecker+Invalid, 3329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:12,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1629 Valid, 9084 Invalid, 3329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 09:49:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2022-01-18 09:49:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 4576. [2022-01-18 09:49:12,445 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) [2022-01-18 09:49:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 9376 transitions. [2022-01-18 09:49:12,451 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 9376 transitions. Word has length 99 [2022-01-18 09:49:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:12,451 INFO L470 AbstractCegarLoop]: Abstraction has 4576 states and 9376 transitions. [2022-01-18 09:49:12,451 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) [2022-01-18 09:49:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 9376 transitions. [2022-01-18 09:49:12,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:12,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:12,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:12,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 09:49:12,455 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)] === [2022-01-18 09:49:12,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash -502418461, now seen corresponding path program 3 times [2022-01-18 09:49:12,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:12,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008917673] [2022-01-18 09:49:12,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:12,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:13,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:13,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008917673] [2022-01-18 09:49:13,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008917673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:13,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:13,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:49:13,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013022287] [2022-01-18 09:49:13,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:13,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:49:13,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:13,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:49:13,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:49:13,156 INFO L87 Difference]: Start difference. First operand 4576 states and 9376 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) [2022-01-18 09:49:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:17,661 INFO L93 Difference]: Finished difference Result 7486 states and 15358 transitions. [2022-01-18 09:49:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:49:17,662 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 [2022-01-18 09:49:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:17,669 INFO L225 Difference]: With dead ends: 7486 [2022-01-18 09:49:17,669 INFO L226 Difference]: Without dead ends: 7486 [2022-01-18 09:49:17,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1067, Invalid=5095, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:49:17,670 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1910 mSDsluCounter, 8880 mSDsCounter, 0 mSdLazyCounter, 3183 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 9460 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:17,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 9460 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 09:49:17,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2022-01-18 09:49:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 4636. [2022-01-18 09:49:17,716 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) [2022-01-18 09:49:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 9498 transitions. [2022-01-18 09:49:17,722 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 9498 transitions. Word has length 99 [2022-01-18 09:49:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:17,723 INFO L470 AbstractCegarLoop]: Abstraction has 4636 states and 9498 transitions. [2022-01-18 09:49:17,723 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) [2022-01-18 09:49:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 9498 transitions. [2022-01-18 09:49:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:17,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:17,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:17,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 09:49:17,726 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)] === [2022-01-18 09:49:17,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:17,727 INFO L85 PathProgramCache]: Analyzing trace with hash 704750963, now seen corresponding path program 4 times [2022-01-18 09:49:17,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:17,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287161168] [2022-01-18 09:49:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:17,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:18,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:18,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:18,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287161168] [2022-01-18 09:49:18,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287161168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:18,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:18,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:49:18,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315935813] [2022-01-18 09:49:18,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:18,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:49:18,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:49:18,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:49:18,420 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) [2022-01-18 09:49:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:22,672 INFO L93 Difference]: Finished difference Result 6454 states and 13227 transitions. [2022-01-18 09:49:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:49:22,672 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 [2022-01-18 09:49:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:22,678 INFO L225 Difference]: With dead ends: 6454 [2022-01-18 09:49:22,679 INFO L226 Difference]: Without dead ends: 6454 [2022-01-18 09:49:22,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=941, Invalid=4609, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:49:22,679 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1644 mSDsluCounter, 9968 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 10530 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:22,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 10530 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3642 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:49:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states. [2022-01-18 09:49:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6454 to 4636. [2022-01-18 09:49:22,721 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) [2022-01-18 09:49:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 9498 transitions. [2022-01-18 09:49:22,727 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 9498 transitions. Word has length 99 [2022-01-18 09:49:22,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:22,727 INFO L470 AbstractCegarLoop]: Abstraction has 4636 states and 9498 transitions. [2022-01-18 09:49:22,727 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) [2022-01-18 09:49:22,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 9498 transitions. [2022-01-18 09:49:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:22,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:22,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:22,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 09:49:22,731 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)] === [2022-01-18 09:49:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:22,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1980365383, now seen corresponding path program 5 times [2022-01-18 09:49:22,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:22,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771274143] [2022-01-18 09:49:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:22,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:23,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:23,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771274143] [2022-01-18 09:49:23,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771274143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:23,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:23,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:49:23,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274402756] [2022-01-18 09:49:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:23,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:49:23,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:23,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:49:23,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:49:23,528 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) [2022-01-18 09:49:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:27,796 INFO L93 Difference]: Finished difference Result 6539 states and 13414 transitions. [2022-01-18 09:49:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:49:27,796 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 [2022-01-18 09:49:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:27,803 INFO L225 Difference]: With dead ends: 6539 [2022-01-18 09:49:27,803 INFO L226 Difference]: Without dead ends: 6539 [2022-01-18 09:49:27,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:49:27,804 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1662 mSDsluCounter, 8914 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 9466 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:27,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 9466 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:49:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2022-01-18 09:49:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 4653. [2022-01-18 09:49:27,847 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) [2022-01-18 09:49:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 9532 transitions. [2022-01-18 09:49:27,852 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 9532 transitions. Word has length 99 [2022-01-18 09:49:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:27,852 INFO L470 AbstractCegarLoop]: Abstraction has 4653 states and 9532 transitions. [2022-01-18 09:49:27,852 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) [2022-01-18 09:49:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 9532 transitions. [2022-01-18 09:49:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:27,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:27,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:27,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 09:49:27,856 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)] === [2022-01-18 09:49:27,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash 132152027, now seen corresponding path program 6 times [2022-01-18 09:49:27,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:27,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898390598] [2022-01-18 09:49:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:27,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:28,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:28,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898390598] [2022-01-18 09:49:28,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898390598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:28,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:28,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:49:28,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075489284] [2022-01-18 09:49:28,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:28,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:49:28,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:49:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:49:28,612 INFO L87 Difference]: Start difference. First operand 4653 states and 9532 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) [2022-01-18 09:49:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:32,905 INFO L93 Difference]: Finished difference Result 6590 states and 13516 transitions. [2022-01-18 09:49:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:49:32,906 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 [2022-01-18 09:49:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:32,912 INFO L225 Difference]: With dead ends: 6590 [2022-01-18 09:49:32,912 INFO L226 Difference]: Without dead ends: 6590 [2022-01-18 09:49:32,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:49:32,913 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 1731 mSDsluCounter, 9498 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 10049 SdHoareTripleChecker+Invalid, 3621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:32,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1731 Valid, 10049 Invalid, 3621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:49:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2022-01-18 09:49:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 4687. [2022-01-18 09:49:32,952 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) [2022-01-18 09:49:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 9600 transitions. [2022-01-18 09:49:32,957 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 9600 transitions. Word has length 99 [2022-01-18 09:49:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:32,958 INFO L470 AbstractCegarLoop]: Abstraction has 4687 states and 9600 transitions. [2022-01-18 09:49:32,958 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) [2022-01-18 09:49:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 9600 transitions. [2022-01-18 09:49:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:32,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:32,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:32,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 09:49:32,961 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)] === [2022-01-18 09:49:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:32,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1855634331, now seen corresponding path program 7 times [2022-01-18 09:49:32,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:32,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589637140] [2022-01-18 09:49:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:32,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:33,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:33,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589637140] [2022-01-18 09:49:33,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589637140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:33,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:33,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:49:33,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898399234] [2022-01-18 09:49:33,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:33,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:49:33,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:33,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:49:33,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1170, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:49:33,864 INFO L87 Difference]: Start difference. First operand 4687 states and 9600 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) [2022-01-18 09:49:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:39,148 INFO L93 Difference]: Finished difference Result 7348 states and 15076 transitions. [2022-01-18 09:49:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:49:39,148 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 [2022-01-18 09:49:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:39,156 INFO L225 Difference]: With dead ends: 7348 [2022-01-18 09:49:39,156 INFO L226 Difference]: Without dead ends: 7348 [2022-01-18 09:49:39,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1132, Invalid=5674, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:49:39,157 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1812 mSDsluCounter, 10150 mSDsCounter, 0 mSdLazyCounter, 4152 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 10709 SdHoareTripleChecker+Invalid, 4195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:39,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 10709 Invalid, 4195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4152 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:49:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7348 states. [2022-01-18 09:49:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7348 to 5037. [2022-01-18 09:49:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5037 states, 5034 states have (on average 2.053237981724275) internal successors, (10336), 5036 states have internal predecessors, (10336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:49:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5037 states to 5037 states and 10336 transitions. [2022-01-18 09:49:39,212 INFO L78 Accepts]: Start accepts. Automaton has 5037 states and 10336 transitions. Word has length 99 [2022-01-18 09:49:39,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:39,228 INFO L470 AbstractCegarLoop]: Abstraction has 5037 states and 10336 transitions. [2022-01-18 09:49:39,228 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) [2022-01-18 09:49:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5037 states and 10336 transitions. [2022-01-18 09:49:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:39,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:39,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:39,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 09:49:39,232 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)] === [2022-01-18 09:49:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1337266985, now seen corresponding path program 8 times [2022-01-18 09:49:39,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:39,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431166318] [2022-01-18 09:49:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:39,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:39,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:39,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431166318] [2022-01-18 09:49:39,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431166318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:39,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:39,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:49:39,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393022983] [2022-01-18 09:49:39,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:39,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:49:39,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:49:39,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:49:39,967 INFO L87 Difference]: Start difference. First operand 5037 states and 10336 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) [2022-01-18 09:49:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:44,380 INFO L93 Difference]: Finished difference Result 8127 states and 16682 transitions. [2022-01-18 09:49:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:49:44,381 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 [2022-01-18 09:49:44,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:44,389 INFO L225 Difference]: With dead ends: 8127 [2022-01-18 09:49:44,389 INFO L226 Difference]: Without dead ends: 8127 [2022-01-18 09:49:44,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:49:44,389 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1648 mSDsluCounter, 9852 mSDsCounter, 0 mSdLazyCounter, 3752 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 10407 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:44,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 10407 Invalid, 3787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3752 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:49:44,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8127 states. [2022-01-18 09:49:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8127 to 4738. [2022-01-18 09:49:44,435 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) [2022-01-18 09:49:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 9702 transitions. [2022-01-18 09:49:44,441 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 9702 transitions. Word has length 99 [2022-01-18 09:49:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:44,441 INFO L470 AbstractCegarLoop]: Abstraction has 4738 states and 9702 transitions. [2022-01-18 09:49:44,441 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) [2022-01-18 09:49:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 9702 transitions. [2022-01-18 09:49:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:44,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:44,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:44,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 09:49:44,445 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)] === [2022-01-18 09:49:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 627083385, now seen corresponding path program 9 times [2022-01-18 09:49:44,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:44,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288380009] [2022-01-18 09:49:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:44,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:45,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:45,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288380009] [2022-01-18 09:49:45,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288380009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:45,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:45,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:49:45,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291093463] [2022-01-18 09:49:45,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:45,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:49:45,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:49:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:49:45,212 INFO L87 Difference]: Start difference. First operand 4738 states and 9702 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) [2022-01-18 09:49:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:49,293 INFO L93 Difference]: Finished difference Result 6743 states and 13822 transitions. [2022-01-18 09:49:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:49:49,293 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 [2022-01-18 09:49:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:49,300 INFO L225 Difference]: With dead ends: 6743 [2022-01-18 09:49:49,300 INFO L226 Difference]: Without dead ends: 6743 [2022-01-18 09:49:49,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:49:49,301 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1606 mSDsluCounter, 8943 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 9500 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:49,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 9500 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 09:49:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6743 states. [2022-01-18 09:49:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6743 to 4755. [2022-01-18 09:49:49,344 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) [2022-01-18 09:49:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4755 states to 4755 states and 9736 transitions. [2022-01-18 09:49:49,350 INFO L78 Accepts]: Start accepts. Automaton has 4755 states and 9736 transitions. Word has length 99 [2022-01-18 09:49:49,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:49,350 INFO L470 AbstractCegarLoop]: Abstraction has 4755 states and 9736 transitions. [2022-01-18 09:49:49,350 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) [2022-01-18 09:49:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4755 states and 9736 transitions. [2022-01-18 09:49:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:49,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:49,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:49,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 09:49:49,354 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)] === [2022-01-18 09:49:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:49,354 INFO L85 PathProgramCache]: Analyzing trace with hash 201193627, now seen corresponding path program 10 times [2022-01-18 09:49:49,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:49,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646270497] [2022-01-18 09:49:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:49,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:50,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:50,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646270497] [2022-01-18 09:49:50,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646270497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:50,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:50,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:49:50,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722706732] [2022-01-18 09:49:50,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:50,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:49:50,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:49:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:49:50,266 INFO L87 Difference]: Start difference. First operand 4755 states and 9736 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) [2022-01-18 09:49:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:49:55,319 INFO L93 Difference]: Finished difference Result 7450 states and 15280 transitions. [2022-01-18 09:49:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:49:55,319 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 [2022-01-18 09:49:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:49:55,327 INFO L225 Difference]: With dead ends: 7450 [2022-01-18 09:49:55,327 INFO L226 Difference]: Without dead ends: 7450 [2022-01-18 09:49:55,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1131, Invalid=5675, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:49:55,327 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1881 mSDsluCounter, 8799 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 9361 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:49:55,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1881 Valid, 9361 Invalid, 3547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3503 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:49:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7450 states. [2022-01-18 09:49:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7450 to 5139. [2022-01-18 09:49:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5136 states have (on average 2.0521806853582554) internal successors, (10540), 5138 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:49:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 10540 transitions. [2022-01-18 09:49:55,381 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 10540 transitions. Word has length 99 [2022-01-18 09:49:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:49:55,382 INFO L470 AbstractCegarLoop]: Abstraction has 5139 states and 10540 transitions. [2022-01-18 09:49:55,382 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) [2022-01-18 09:49:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 10540 transitions. [2022-01-18 09:49:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:49:55,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:49:55,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:49:55,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 09:49:55,386 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)] === [2022-01-18 09:49:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:49:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1303259607, now seen corresponding path program 11 times [2022-01-18 09:49:55,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:49:55,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635813376] [2022-01-18 09:49:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:49:55,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:49:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:49:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:49:56,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:49:56,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635813376] [2022-01-18 09:49:56,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635813376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:49:56,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:49:56,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:49:56,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781312675] [2022-01-18 09:49:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:49:56,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:49:56,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:49:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:49:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:49:56,112 INFO L87 Difference]: Start difference. First operand 5139 states and 10540 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) [2022-01-18 09:50:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:00,282 INFO L93 Difference]: Finished difference Result 8229 states and 16886 transitions. [2022-01-18 09:50:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:50:00,282 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 [2022-01-18 09:50:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:00,291 INFO L225 Difference]: With dead ends: 8229 [2022-01-18 09:50:00,291 INFO L226 Difference]: Without dead ends: 8229 [2022-01-18 09:50:00,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:50:00,292 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1591 mSDsluCounter, 9272 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 9830 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:00,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 9830 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:50:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2022-01-18 09:50:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 4772. [2022-01-18 09:50:00,340 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) [2022-01-18 09:50:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 9770 transitions. [2022-01-18 09:50:00,345 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 9770 transitions. Word has length 99 [2022-01-18 09:50:00,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:00,345 INFO L470 AbstractCegarLoop]: Abstraction has 4772 states and 9770 transitions. [2022-01-18 09:50:00,345 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) [2022-01-18 09:50:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 9770 transitions. [2022-01-18 09:50:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:00,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:00,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:00,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 09:50:00,349 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)] === [2022-01-18 09:50:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash -234690567, now seen corresponding path program 12 times [2022-01-18 09:50:00,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:00,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130163572] [2022-01-18 09:50:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:00,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:01,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:01,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130163572] [2022-01-18 09:50:01,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130163572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:01,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:01,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:50:01,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738580923] [2022-01-18 09:50:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:01,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:50:01,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:01,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:50:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:50:01,264 INFO L87 Difference]: Start difference. First operand 4772 states and 9770 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) [2022-01-18 09:50:06,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:06,551 INFO L93 Difference]: Finished difference Result 7518 states and 15416 transitions. [2022-01-18 09:50:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:50:06,552 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 [2022-01-18 09:50:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:06,559 INFO L225 Difference]: With dead ends: 7518 [2022-01-18 09:50:06,560 INFO L226 Difference]: Without dead ends: 7518 [2022-01-18 09:50:06,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1131, Invalid=5675, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:50:06,560 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1855 mSDsluCounter, 10952 mSDsCounter, 0 mSdLazyCounter, 4341 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 11516 SdHoareTripleChecker+Invalid, 4386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 4341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:06,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 11516 Invalid, 4386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 4341 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:50:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7518 states. [2022-01-18 09:50:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7518 to 5207. [2022-01-18 09:50:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5204 states have (on average 2.051498847040738) internal successors, (10676), 5206 states have internal predecessors, (10676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:50:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 10676 transitions. [2022-01-18 09:50:06,611 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 10676 transitions. Word has length 99 [2022-01-18 09:50:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:06,612 INFO L470 AbstractCegarLoop]: Abstraction has 5207 states and 10676 transitions. [2022-01-18 09:50:06,612 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) [2022-01-18 09:50:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 10676 transitions. [2022-01-18 09:50:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:06,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:06,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:06,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 09:50:06,616 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)] === [2022-01-18 09:50:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash 867375413, now seen corresponding path program 13 times [2022-01-18 09:50:06,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:06,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946725509] [2022-01-18 09:50:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:06,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:07,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:07,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946725509] [2022-01-18 09:50:07,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946725509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:07,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:07,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:50:07,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921255382] [2022-01-18 09:50:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:07,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:50:07,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:50:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:50:07,609 INFO L87 Difference]: Start difference. First operand 5207 states and 10676 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) [2022-01-18 09:50:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:13,562 INFO L93 Difference]: Finished difference Result 9846 states and 20243 transitions. [2022-01-18 09:50:13,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:50:13,563 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 [2022-01-18 09:50:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:13,574 INFO L225 Difference]: With dead ends: 9846 [2022-01-18 09:50:13,574 INFO L226 Difference]: Without dead ends: 9846 [2022-01-18 09:50:13,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1411, Invalid=7145, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 09:50:13,575 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 2129 mSDsluCounter, 11115 mSDsCounter, 0 mSdLazyCounter, 4472 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2129 SdHoareTripleChecker+Valid, 11683 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 4472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:13,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2129 Valid, 11683 Invalid, 4532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 4472 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 09:50:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9846 states. [2022-01-18 09:50:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9846 to 5245. [2022-01-18 09:50:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5242 states have (on average 2.0507439908431895) internal successors, (10750), 5244 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) [2022-01-18 09:50:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 10750 transitions. [2022-01-18 09:50:13,640 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 10750 transitions. Word has length 99 [2022-01-18 09:50:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:13,640 INFO L470 AbstractCegarLoop]: Abstraction has 5245 states and 10750 transitions. [2022-01-18 09:50:13,640 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) [2022-01-18 09:50:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 10750 transitions. [2022-01-18 09:50:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:13,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:13,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:13,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 09:50:13,644 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)] === [2022-01-18 09:50:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:13,645 INFO L85 PathProgramCache]: Analyzing trace with hash -625515723, now seen corresponding path program 14 times [2022-01-18 09:50:13,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:13,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64704797] [2022-01-18 09:50:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:13,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:14,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:14,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64704797] [2022-01-18 09:50:14,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64704797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:14,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:14,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:50:14,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215139035] [2022-01-18 09:50:14,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:14,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:50:14,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:50:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1241, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:50:14,532 INFO L87 Difference]: Start difference. First operand 5245 states and 10750 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) [2022-01-18 09:50:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:20,956 INFO L93 Difference]: Finished difference Result 9883 states and 20302 transitions. [2022-01-18 09:50:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:50:20,957 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 [2022-01-18 09:50:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:20,967 INFO L225 Difference]: With dead ends: 9883 [2022-01-18 09:50:20,968 INFO L226 Difference]: Without dead ends: 9883 [2022-01-18 09:50:20,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1408, Invalid=7148, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 09:50:20,969 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 1901 mSDsluCounter, 12857 mSDsCounter, 0 mSdLazyCounter, 4910 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 13579 SdHoareTripleChecker+Invalid, 4969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 4910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:20,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1901 Valid, 13579 Invalid, 4969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 4910 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 09:50:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9883 states. [2022-01-18 09:50:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9883 to 5095. [2022-01-18 09:50:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5092 states have (on average 2.0489002356637864) internal successors, (10433), 5094 states have internal predecessors, (10433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:50:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 10433 transitions. [2022-01-18 09:50:21,041 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 10433 transitions. Word has length 99 [2022-01-18 09:50:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:21,042 INFO L470 AbstractCegarLoop]: Abstraction has 5095 states and 10433 transitions. [2022-01-18 09:50:21,042 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) [2022-01-18 09:50:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 10433 transitions. [2022-01-18 09:50:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:21,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:21,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:21,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 09:50:21,046 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)] === [2022-01-18 09:50:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash 658198483, now seen corresponding path program 15 times [2022-01-18 09:50:21,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:21,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617876702] [2022-01-18 09:50:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:21,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:21,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:21,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617876702] [2022-01-18 09:50:21,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617876702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:21,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:21,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:50:21,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647346139] [2022-01-18 09:50:21,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:21,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:50:21,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:50:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:50:21,743 INFO L87 Difference]: Start difference. First operand 5095 states and 10433 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) [2022-01-18 09:50:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:25,861 INFO L93 Difference]: Finished difference Result 8286 states and 16996 transitions. [2022-01-18 09:50:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:50:25,861 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-18 09:50:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:25,870 INFO L225 Difference]: With dead ends: 8286 [2022-01-18 09:50:25,870 INFO L226 Difference]: Without dead ends: 8286 [2022-01-18 09:50:25,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:50:25,871 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1806 mSDsluCounter, 8346 mSDsCounter, 0 mSdLazyCounter, 3149 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 8906 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:25,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1806 Valid, 8906 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3149 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 09:50:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2022-01-18 09:50:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 4823. [2022-01-18 09:50:25,925 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) [2022-01-18 09:50:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 9872 transitions. [2022-01-18 09:50:25,931 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 9872 transitions. Word has length 99 [2022-01-18 09:50:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:25,932 INFO L470 AbstractCegarLoop]: Abstraction has 4823 states and 9872 transitions. [2022-01-18 09:50:25,932 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) [2022-01-18 09:50:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 9872 transitions. [2022-01-18 09:50:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:25,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:25,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:25,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 09:50:25,937 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)] === [2022-01-18 09:50:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1242529499, now seen corresponding path program 16 times [2022-01-18 09:50:25,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:25,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146492492] [2022-01-18 09:50:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:25,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:26,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:26,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146492492] [2022-01-18 09:50:26,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146492492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:26,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:26,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:50:26,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495248380] [2022-01-18 09:50:26,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:26,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:50:26,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:50:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:50:26,670 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) [2022-01-18 09:50:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:31,002 INFO L93 Difference]: Finished difference Result 6556 states and 13431 transitions. [2022-01-18 09:50:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:50:31,003 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 [2022-01-18 09:50:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:31,010 INFO L225 Difference]: With dead ends: 6556 [2022-01-18 09:50:31,010 INFO L226 Difference]: Without dead ends: 6556 [2022-01-18 09:50:31,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:50:31,010 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1517 mSDsluCounter, 10460 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 11025 SdHoareTripleChecker+Invalid, 3958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:31,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 11025 Invalid, 3958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3924 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:50:31,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2022-01-18 09:50:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 4823. [2022-01-18 09:50:31,054 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) [2022-01-18 09:50:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 9872 transitions. [2022-01-18 09:50:31,060 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 9872 transitions. Word has length 99 [2022-01-18 09:50:31,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:31,060 INFO L470 AbstractCegarLoop]: Abstraction has 4823 states and 9872 transitions. [2022-01-18 09:50:31,060 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) [2022-01-18 09:50:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 9872 transitions. [2022-01-18 09:50:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:31,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:31,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:31,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 09:50:31,064 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)] === [2022-01-18 09:50:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1850403261, now seen corresponding path program 17 times [2022-01-18 09:50:31,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:31,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443439108] [2022-01-18 09:50:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:31,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:31,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:31,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443439108] [2022-01-18 09:50:31,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443439108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:31,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:31,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:50:31,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169840747] [2022-01-18 09:50:31,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:31,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:50:31,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:50:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:50:31,824 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) [2022-01-18 09:50:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:36,019 INFO L93 Difference]: Finished difference Result 6872 states and 14102 transitions. [2022-01-18 09:50:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:50:36,020 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 [2022-01-18 09:50:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:36,028 INFO L225 Difference]: With dead ends: 6872 [2022-01-18 09:50:36,028 INFO L226 Difference]: Without dead ends: 6872 [2022-01-18 09:50:36,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:50:36,029 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1580 mSDsluCounter, 8894 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 9452 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:36,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 9452 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3331 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:50:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6872 states. [2022-01-18 09:50:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6872 to 4858. [2022-01-18 09:50:36,077 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) [2022-01-18 09:50:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 9945 transitions. [2022-01-18 09:50:36,084 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 9945 transitions. Word has length 99 [2022-01-18 09:50:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:36,084 INFO L470 AbstractCegarLoop]: Abstraction has 4858 states and 9945 transitions. [2022-01-18 09:50:36,084 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) [2022-01-18 09:50:36,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 9945 transitions. [2022-01-18 09:50:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:36,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:36,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:36,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-18 09:50:36,088 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)] === [2022-01-18 09:50:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1757759749, now seen corresponding path program 18 times [2022-01-18 09:50:36,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:36,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229455257] [2022-01-18 09:50:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:36,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:36,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:36,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229455257] [2022-01-18 09:50:36,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229455257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:36,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:36,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:50:36,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177377393] [2022-01-18 09:50:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:36,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:50:36,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:50:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:50:36,838 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) [2022-01-18 09:50:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:41,709 INFO L93 Difference]: Finished difference Result 8931 states and 18348 transitions. [2022-01-18 09:50:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:50:41,709 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 [2022-01-18 09:50:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:41,718 INFO L225 Difference]: With dead ends: 8931 [2022-01-18 09:50:41,718 INFO L226 Difference]: Without dead ends: 8931 [2022-01-18 09:50:41,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:50:41,720 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1665 mSDsluCounter, 10703 mSDsCounter, 0 mSdLazyCounter, 3953 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 11307 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:41,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 11307 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3953 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:50:41,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8931 states. [2022-01-18 09:50:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8931 to 4860. [2022-01-18 09:50:41,773 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) [2022-01-18 09:50:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 9949 transitions. [2022-01-18 09:50:41,778 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 9949 transitions. Word has length 99 [2022-01-18 09:50:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:41,779 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 9949 transitions. [2022-01-18 09:50:41,779 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) [2022-01-18 09:50:41,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 9949 transitions. [2022-01-18 09:50:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:41,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:41,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:41,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 09:50:41,782 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)] === [2022-01-18 09:50:41,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1330038123, now seen corresponding path program 19 times [2022-01-18 09:50:41,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:41,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829509936] [2022-01-18 09:50:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:41,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:42,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:42,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829509936] [2022-01-18 09:50:42,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829509936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:42,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:42,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:50:42,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314851982] [2022-01-18 09:50:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:42,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:50:42,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:50:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:50:42,484 INFO L87 Difference]: Start difference. First operand 4860 states and 9949 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) [2022-01-18 09:50:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:46,930 INFO L93 Difference]: Finished difference Result 6973 states and 14306 transitions. [2022-01-18 09:50:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:50:46,931 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 [2022-01-18 09:50:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:46,938 INFO L225 Difference]: With dead ends: 6973 [2022-01-18 09:50:46,939 INFO L226 Difference]: Without dead ends: 6973 [2022-01-18 09:50:46,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:50:46,939 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1557 mSDsluCounter, 9787 mSDsCounter, 0 mSdLazyCounter, 3736 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 10359 SdHoareTripleChecker+Invalid, 3770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:46,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 10359 Invalid, 3770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3736 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:50:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2022-01-18 09:50:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 4842. [2022-01-18 09:50:46,985 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) [2022-01-18 09:50:46,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 9911 transitions. [2022-01-18 09:50:46,992 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 9911 transitions. Word has length 99 [2022-01-18 09:50:46,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:46,992 INFO L470 AbstractCegarLoop]: Abstraction has 4842 states and 9911 transitions. [2022-01-18 09:50:46,992 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) [2022-01-18 09:50:46,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 9911 transitions. [2022-01-18 09:50:46,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:46,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:46,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:46,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-18 09:50:46,996 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)] === [2022-01-18 09:50:46,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:46,996 INFO L85 PathProgramCache]: Analyzing trace with hash 969706245, now seen corresponding path program 20 times [2022-01-18 09:50:46,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:46,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2210058] [2022-01-18 09:50:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:46,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:47,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:47,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2210058] [2022-01-18 09:50:47,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2210058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:47,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:47,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:50:47,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193686569] [2022-01-18 09:50:47,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:47,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:50:47,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:50:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:50:47,740 INFO L87 Difference]: Start difference. First operand 4842 states and 9911 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) [2022-01-18 09:50:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:53,004 INFO L93 Difference]: Finished difference Result 7878 states and 16150 transitions. [2022-01-18 09:50:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 09:50:53,004 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 [2022-01-18 09:50:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:53,012 INFO L225 Difference]: With dead ends: 7878 [2022-01-18 09:50:53,012 INFO L226 Difference]: Without dead ends: 7878 [2022-01-18 09:50:53,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1181, Invalid=5461, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 09:50:53,013 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1751 mSDsluCounter, 11520 mSDsCounter, 0 mSdLazyCounter, 4030 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 12117 SdHoareTripleChecker+Invalid, 4070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:53,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 12117 Invalid, 4070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4030 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:50:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2022-01-18 09:50:53,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 4872. [2022-01-18 09:50:53,063 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) [2022-01-18 09:50:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:50:53,069 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:50:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:53,069 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:50:53,069 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) [2022-01-18 09:50:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:50:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:53,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:53,073 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] [2022-01-18 09:50:53,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-18 09:50:53,073 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)] === [2022-01-18 09:50:53,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash 948513173, now seen corresponding path program 21 times [2022-01-18 09:50:53,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:53,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534125478] [2022-01-18 09:50:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:53,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:53,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534125478] [2022-01-18 09:50:53,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534125478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:53,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:53,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:50:53,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781302708] [2022-01-18 09:50:53,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:53,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:50:53,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:53,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:50:53,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:50:53,805 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) [2022-01-18 09:50:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:50:58,605 INFO L93 Difference]: Finished difference Result 7785 states and 15957 transitions. [2022-01-18 09:50:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:50:58,605 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 [2022-01-18 09:50:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:50:58,614 INFO L225 Difference]: With dead ends: 7785 [2022-01-18 09:50:58,614 INFO L226 Difference]: Without dead ends: 7785 [2022-01-18 09:50:58,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1060, Invalid=5102, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:50:58,616 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1929 mSDsluCounter, 10135 mSDsCounter, 0 mSdLazyCounter, 3759 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 10714 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:50:58,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 10714 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3759 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:50:58,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2022-01-18 09:50:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 4874. [2022-01-18 09:50:58,680 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) [2022-01-18 09:50:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 9976 transitions. [2022-01-18 09:50:58,686 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 9976 transitions. Word has length 99 [2022-01-18 09:50:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:50:58,686 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 9976 transitions. [2022-01-18 09:50:58,686 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) [2022-01-18 09:50:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 9976 transitions. [2022-01-18 09:50:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:50:58,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:50:58,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:50:58,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-18 09:50:58,690 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)] === [2022-01-18 09:50:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:50:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash -885464299, now seen corresponding path program 22 times [2022-01-18 09:50:58,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:50:58,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083067150] [2022-01-18 09:50:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:50:58,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:50:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:50:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:50:59,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:50:59,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083067150] [2022-01-18 09:50:59,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083067150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:50:59,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:50:59,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:50:59,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155517314] [2022-01-18 09:50:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:50:59,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:50:59,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:50:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:50:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:50:59,448 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) [2022-01-18 09:51:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:04,031 INFO L93 Difference]: Finished difference Result 6740 states and 13803 transitions. [2022-01-18 09:51:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:51:04,031 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 [2022-01-18 09:51:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:04,038 INFO L225 Difference]: With dead ends: 6740 [2022-01-18 09:51:04,038 INFO L226 Difference]: Without dead ends: 6740 [2022-01-18 09:51:04,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=951, Invalid=4749, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:51:04,039 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1521 mSDsluCounter, 10686 mSDsCounter, 0 mSdLazyCounter, 3957 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 11241 SdHoareTripleChecker+Invalid, 3997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:04,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 11241 Invalid, 3997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3957 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:51:04,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2022-01-18 09:51:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 4872. [2022-01-18 09:51:04,082 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) [2022-01-18 09:51:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:51:04,088 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:51:04,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:04,088 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:51:04,088 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) [2022-01-18 09:51:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:51:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:04,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:04,092 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] [2022-01-18 09:51:04,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-18 09:51:04,092 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)] === [2022-01-18 09:51:04,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash -917579705, now seen corresponding path program 23 times [2022-01-18 09:51:04,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:04,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881180242] [2022-01-18 09:51:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:04,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:05,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:05,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881180242] [2022-01-18 09:51:05,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881180242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:05,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:05,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:51:05,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303722505] [2022-01-18 09:51:05,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:05,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:51:05,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:05,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:51:05,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1236, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:51:05,130 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 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) [2022-01-18 09:51:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:10,863 INFO L93 Difference]: Finished difference Result 8263 states and 17009 transitions. [2022-01-18 09:51:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:51:10,863 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 [2022-01-18 09:51:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:10,872 INFO L225 Difference]: With dead ends: 8263 [2022-01-18 09:51:10,872 INFO L226 Difference]: Without dead ends: 8263 [2022-01-18 09:51:10,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1407, Invalid=7149, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 09:51:10,873 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 2188 mSDsluCounter, 9560 mSDsCounter, 0 mSdLazyCounter, 3759 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 10127 SdHoareTripleChecker+Invalid, 3815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:10,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2188 Valid, 10127 Invalid, 3815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3759 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:51:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2022-01-18 09:51:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 5183. [2022-01-18 09:51:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5180 states have (on average 2.0557915057915057) internal successors, (10649), 5182 states have internal predecessors, (10649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:51:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 10649 transitions. [2022-01-18 09:51:10,931 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 10649 transitions. Word has length 99 [2022-01-18 09:51:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:10,931 INFO L470 AbstractCegarLoop]: Abstraction has 5183 states and 10649 transitions. [2022-01-18 09:51:10,932 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) [2022-01-18 09:51:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 10649 transitions. [2022-01-18 09:51:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:10,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:10,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:51:10,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 09:51:10,936 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)] === [2022-01-18 09:51:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash 184486275, now seen corresponding path program 24 times [2022-01-18 09:51:10,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:10,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639068949] [2022-01-18 09:51:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:10,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:11,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:11,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639068949] [2022-01-18 09:51:11,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639068949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:11,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:11,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:51:11,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45720711] [2022-01-18 09:51:11,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:11,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:51:11,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:51:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:51:11,687 INFO L87 Difference]: Start difference. First operand 5183 states and 10649 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) [2022-01-18 09:51:15,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:15,895 INFO L93 Difference]: Finished difference Result 8696 states and 17879 transitions. [2022-01-18 09:51:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:51:15,896 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 [2022-01-18 09:51:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:15,905 INFO L225 Difference]: With dead ends: 8696 [2022-01-18 09:51:15,906 INFO L226 Difference]: Without dead ends: 8696 [2022-01-18 09:51:15,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:51:15,907 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1715 mSDsluCounter, 9215 mSDsCounter, 0 mSdLazyCounter, 3442 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 9778 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:15,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1715 Valid, 9778 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3442 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:51:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8696 states. [2022-01-18 09:51:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8696 to 4890. [2022-01-18 09:51:15,968 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) [2022-01-18 09:51:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 10010 transitions. [2022-01-18 09:51:15,974 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 10010 transitions. Word has length 99 [2022-01-18 09:51:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:15,974 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 10010 transitions. [2022-01-18 09:51:15,974 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) [2022-01-18 09:51:15,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 10010 transitions. [2022-01-18 09:51:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:15,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:15,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:51:15,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-18 09:51:15,978 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)] === [2022-01-18 09:51:15,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:15,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1010223217, now seen corresponding path program 25 times [2022-01-18 09:51:15,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:15,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380469819] [2022-01-18 09:51:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:15,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:16,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:16,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380469819] [2022-01-18 09:51:16,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380469819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:16,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:16,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:51:16,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065172575] [2022-01-18 09:51:16,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:16,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:51:16,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:16,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:51:16,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:51:16,612 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) [2022-01-18 09:51:21,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:21,343 INFO L93 Difference]: Finished difference Result 9191 states and 18886 transitions. [2022-01-18 09:51:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:51:21,343 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 [2022-01-18 09:51:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:21,352 INFO L225 Difference]: With dead ends: 9191 [2022-01-18 09:51:21,352 INFO L226 Difference]: Without dead ends: 9191 [2022-01-18 09:51:21,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 09:51:21,353 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1602 mSDsluCounter, 10636 mSDsCounter, 0 mSdLazyCounter, 3870 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 11245 SdHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:21,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 11245 Invalid, 3905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3870 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:51:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2022-01-18 09:51:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 4892. [2022-01-18 09:51:21,410 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) [2022-01-18 09:51:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 10014 transitions. [2022-01-18 09:51:21,416 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 10014 transitions. Word has length 99 [2022-01-18 09:51:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:21,416 INFO L470 AbstractCegarLoop]: Abstraction has 4892 states and 10014 transitions. [2022-01-18 09:51:21,417 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) [2022-01-18 09:51:21,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 10014 transitions. [2022-01-18 09:51:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:21,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:21,420 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, 1, 1, 1] [2022-01-18 09:51:21,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-18 09:51:21,420 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)] === [2022-01-18 09:51:21,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:21,421 INFO L85 PathProgramCache]: Analyzing trace with hash 196946207, now seen corresponding path program 26 times [2022-01-18 09:51:21,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:21,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764099687] [2022-01-18 09:51:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:21,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:22,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:22,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764099687] [2022-01-18 09:51:22,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764099687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:22,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:22,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:51:22,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587966324] [2022-01-18 09:51:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:22,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:51:22,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:51:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:51:22,208 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) [2022-01-18 09:51:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:26,582 INFO L93 Difference]: Finished difference Result 7301 states and 14980 transitions. [2022-01-18 09:51:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:51:26,583 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 [2022-01-18 09:51:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:26,591 INFO L225 Difference]: With dead ends: 7301 [2022-01-18 09:51:26,591 INFO L226 Difference]: Without dead ends: 7301 [2022-01-18 09:51:26,591 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 [2022-01-18 09:51:26,592 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1726 mSDsluCounter, 9527 mSDsCounter, 0 mSdLazyCounter, 3537 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 10104 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:26,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1726 Valid, 10104 Invalid, 3580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3537 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:51:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7301 states. [2022-01-18 09:51:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7301 to 4874. [2022-01-18 09:51:26,640 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) [2022-01-18 09:51:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 9976 transitions. [2022-01-18 09:51:26,645 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 9976 transitions. Word has length 99 [2022-01-18 09:51:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:26,645 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 9976 transitions. [2022-01-18 09:51:26,646 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) [2022-01-18 09:51:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 9976 transitions. [2022-01-18 09:51:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:26,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:26,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:51:26,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 09:51:26,649 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)] === [2022-01-18 09:51:26,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:26,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1806797157, now seen corresponding path program 27 times [2022-01-18 09:51:26,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:26,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106522070] [2022-01-18 09:51:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:26,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:27,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106522070] [2022-01-18 09:51:27,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106522070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:27,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:27,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:51:27,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970946749] [2022-01-18 09:51:27,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:27,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:51:27,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:51:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:51:27,561 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) [2022-01-18 09:51:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:33,013 INFO L93 Difference]: Finished difference Result 7661 states and 15725 transitions. [2022-01-18 09:51:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:51:33,013 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 [2022-01-18 09:51:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:33,021 INFO L225 Difference]: With dead ends: 7661 [2022-01-18 09:51:33,021 INFO L226 Difference]: Without dead ends: 7661 [2022-01-18 09:51:33,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1130, Invalid=5676, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:51:33,022 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1826 mSDsluCounter, 10712 mSDsCounter, 0 mSdLazyCounter, 4461 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 11277 SdHoareTripleChecker+Invalid, 4506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 4461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:33,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1826 Valid, 11277 Invalid, 4506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 4461 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 09:51:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7661 states. [2022-01-18 09:51:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7661 to 5139. [2022-01-18 09:51:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5136 states have (on average 2.052570093457944) internal successors, (10542), 5138 states have internal predecessors, (10542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:51:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 10542 transitions. [2022-01-18 09:51:33,078 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 10542 transitions. Word has length 99 [2022-01-18 09:51:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:33,078 INFO L470 AbstractCegarLoop]: Abstraction has 5139 states and 10542 transitions. [2022-01-18 09:51:33,078 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) [2022-01-18 09:51:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 10542 transitions. [2022-01-18 09:51:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:33,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:33,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:51:33,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-18 09:51:33,082 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)] === [2022-01-18 09:51:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1386104159, now seen corresponding path program 28 times [2022-01-18 09:51:33,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:33,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978492497] [2022-01-18 09:51:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:33,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:33,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:33,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978492497] [2022-01-18 09:51:33,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978492497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:33,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:33,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:51:33,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826219162] [2022-01-18 09:51:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:33,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:51:33,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:51:33,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:51:33,827 INFO L87 Difference]: Start difference. First operand 5139 states and 10542 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) [2022-01-18 09:51:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:38,175 INFO L93 Difference]: Finished difference Result 8440 states and 17331 transitions. [2022-01-18 09:51:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:51:38,175 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 [2022-01-18 09:51:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:38,183 INFO L225 Difference]: With dead ends: 8440 [2022-01-18 09:51:38,183 INFO L226 Difference]: Without dead ends: 8440 [2022-01-18 09:51:38,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:51:38,184 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1581 mSDsluCounter, 9204 mSDsCounter, 0 mSdLazyCounter, 3517 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 9765 SdHoareTripleChecker+Invalid, 3551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:38,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1581 Valid, 9765 Invalid, 3551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3517 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:51:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8440 states. [2022-01-18 09:51:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8440 to 4872. [2022-01-18 09:51:38,231 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) [2022-01-18 09:51:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:51:38,237 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:51:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:38,237 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:51:38,237 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) [2022-01-18 09:51:38,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:51:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:38,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:38,241 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, 1, 1, 1] [2022-01-18 09:51:38,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-18 09:51:38,241 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)] === [2022-01-18 09:51:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1671774703, now seen corresponding path program 29 times [2022-01-18 09:51:38,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:38,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233007081] [2022-01-18 09:51:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:38,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:39,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:39,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233007081] [2022-01-18 09:51:39,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233007081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:39,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:39,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:51:39,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789974077] [2022-01-18 09:51:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:39,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:51:39,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:51:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:51:39,111 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) [2022-01-18 09:51:44,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:44,747 INFO L93 Difference]: Finished difference Result 7957 states and 16353 transitions. [2022-01-18 09:51:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:51:44,748 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 [2022-01-18 09:51:44,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:44,755 INFO L225 Difference]: With dead ends: 7957 [2022-01-18 09:51:44,755 INFO L226 Difference]: Without dead ends: 7957 [2022-01-18 09:51:44,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1134, Invalid=5672, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:51:44,756 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1852 mSDsluCounter, 10718 mSDsCounter, 0 mSdLazyCounter, 4578 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 11285 SdHoareTripleChecker+Invalid, 4621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:44,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 11285 Invalid, 4621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4578 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 09:51:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7957 states. [2022-01-18 09:51:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7957 to 5187. [2022-01-18 09:51:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5184 states have (on average 2.0557484567901234) internal successors, (10657), 5186 states have internal predecessors, (10657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:51:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 10657 transitions. [2022-01-18 09:51:44,810 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 10657 transitions. Word has length 99 [2022-01-18 09:51:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 5187 states and 10657 transitions. [2022-01-18 09:51:44,810 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) [2022-01-18 09:51:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 10657 transitions. [2022-01-18 09:51:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:44,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:44,814 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] [2022-01-18 09:51:44,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-18 09:51:44,814 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)] === [2022-01-18 09:51:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash -569708723, now seen corresponding path program 30 times [2022-01-18 09:51:44,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:44,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149968653] [2022-01-18 09:51:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:44,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:45,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:45,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149968653] [2022-01-18 09:51:45,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149968653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:45,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:45,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:51:45,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344764374] [2022-01-18 09:51:45,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:45,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:51:45,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:51:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:51:45,562 INFO L87 Difference]: Start difference. First operand 5187 states and 10657 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) [2022-01-18 09:51:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:50,007 INFO L93 Difference]: Finished difference Result 8753 states and 17993 transitions. [2022-01-18 09:51:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:51:50,007 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 [2022-01-18 09:51:50,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:50,016 INFO L225 Difference]: With dead ends: 8753 [2022-01-18 09:51:50,016 INFO L226 Difference]: Without dead ends: 8753 [2022-01-18 09:51:50,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:51:50,017 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1548 mSDsluCounter, 10007 mSDsCounter, 0 mSdLazyCounter, 3909 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 10570 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:50,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 10570 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3909 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:51:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2022-01-18 09:51:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 4894. [2022-01-18 09:51:50,069 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) [2022-01-18 09:51:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4894 states to 4894 states and 10018 transitions. [2022-01-18 09:51:50,075 INFO L78 Accepts]: Start accepts. Automaton has 4894 states and 10018 transitions. Word has length 99 [2022-01-18 09:51:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:50,075 INFO L470 AbstractCegarLoop]: Abstraction has 4894 states and 10018 transitions. [2022-01-18 09:51:50,075 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) [2022-01-18 09:51:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4894 states and 10018 transitions. [2022-01-18 09:51:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:50,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:50,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:51:50,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-18 09:51:50,079 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)] === [2022-01-18 09:51:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1764418215, now seen corresponding path program 31 times [2022-01-18 09:51:50,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:50,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235000014] [2022-01-18 09:51:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:50,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:50,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:50,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235000014] [2022-01-18 09:51:50,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235000014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:50,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:50,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:51:50,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798601495] [2022-01-18 09:51:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:50,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:51:50,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:51:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:51:50,736 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) [2022-01-18 09:51:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:51:55,422 INFO L93 Difference]: Finished difference Result 9248 states and 19000 transitions. [2022-01-18 09:51:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:51:55,422 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 [2022-01-18 09:51:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:51:55,432 INFO L225 Difference]: With dead ends: 9248 [2022-01-18 09:51:55,432 INFO L226 Difference]: Without dead ends: 9248 [2022-01-18 09:51:55,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 09:51:55,433 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1675 mSDsluCounter, 10211 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 10820 SdHoareTripleChecker+Invalid, 3821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:51:55,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 10820 Invalid, 3821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:51:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9248 states. [2022-01-18 09:51:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9248 to 4896. [2022-01-18 09:51:55,509 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) [2022-01-18 09:51:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 10022 transitions. [2022-01-18 09:51:55,515 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 10022 transitions. Word has length 99 [2022-01-18 09:51:55,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:51:55,515 INFO L470 AbstractCegarLoop]: Abstraction has 4896 states and 10022 transitions. [2022-01-18 09:51:55,515 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) [2022-01-18 09:51:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 10022 transitions. [2022-01-18 09:51:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:51:55,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:51:55,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:51:55,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-18 09:51:55,518 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)] === [2022-01-18 09:51:55,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:51:55,519 INFO L85 PathProgramCache]: Analyzing trace with hash -557248791, now seen corresponding path program 32 times [2022-01-18 09:51:55,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:51:55,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949167001] [2022-01-18 09:51:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:51:55,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:51:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:51:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:51:56,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:51:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949167001] [2022-01-18 09:51:56,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949167001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:51:56,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:51:56,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:51:56,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159606540] [2022-01-18 09:51:56,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:51:56,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:51:56,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:51:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:51:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:51:56,269 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) [2022-01-18 09:52:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:00,611 INFO L93 Difference]: Finished difference Result 7358 states and 15094 transitions. [2022-01-18 09:52:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:00,612 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 [2022-01-18 09:52:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:00,619 INFO L225 Difference]: With dead ends: 7358 [2022-01-18 09:52:00,619 INFO L226 Difference]: Without dead ends: 7358 [2022-01-18 09:52:00,619 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 [2022-01-18 09:52:00,620 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1715 mSDsluCounter, 8754 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 9331 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:00,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1715 Valid, 9331 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 09:52:00,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2022-01-18 09:52:00,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4878. [2022-01-18 09:52:00,664 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) [2022-01-18 09:52:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 9984 transitions. [2022-01-18 09:52:00,670 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 9984 transitions. Word has length 99 [2022-01-18 09:52:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:00,670 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 9984 transitions. [2022-01-18 09:52:00,670 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) [2022-01-18 09:52:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 9984 transitions. [2022-01-18 09:52:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:00,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:00,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:52:00,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-18 09:52:00,673 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)] === [2022-01-18 09:52:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1052602159, now seen corresponding path program 33 times [2022-01-18 09:52:00,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:00,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152011631] [2022-01-18 09:52:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:00,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:01,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:01,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152011631] [2022-01-18 09:52:01,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152011631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:01,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:01,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:52:01,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780411334] [2022-01-18 09:52:01,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:01,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:52:01,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:01,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:52:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:52:01,371 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) [2022-01-18 09:52:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:05,799 INFO L93 Difference]: Finished difference Result 7386 states and 15167 transitions. [2022-01-18 09:52:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:05,803 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 [2022-01-18 09:52:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:05,811 INFO L225 Difference]: With dead ends: 7386 [2022-01-18 09:52:05,811 INFO L226 Difference]: Without dead ends: 7386 [2022-01-18 09:52:05,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:52:05,812 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1648 mSDsluCounter, 9926 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:05,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 10493 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3815 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:52:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7386 states. [2022-01-18 09:52:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7386 to 4876. [2022-01-18 09:52:05,860 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) [2022-01-18 09:52:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 9980 transitions. [2022-01-18 09:52:05,866 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 9980 transitions. Word has length 99 [2022-01-18 09:52:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:05,866 INFO L470 AbstractCegarLoop]: Abstraction has 4876 states and 9980 transitions. [2022-01-18 09:52:05,866 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) [2022-01-18 09:52:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 9980 transitions. [2022-01-18 09:52:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:05,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:05,870 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, 1, 1, 1] [2022-01-18 09:52:05,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-18 09:52:05,870 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)] === [2022-01-18 09:52:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:05,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1129847727, now seen corresponding path program 34 times [2022-01-18 09:52:05,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:05,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063315144] [2022-01-18 09:52:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:05,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:06,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:06,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063315144] [2022-01-18 09:52:06,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063315144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:06,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:06,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:52:06,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790649391] [2022-01-18 09:52:06,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:06,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:52:06,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:52:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:52:06,631 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) [2022-01-18 09:52:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:10,878 INFO L93 Difference]: Finished difference Result 7043 states and 14445 transitions. [2022-01-18 09:52:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:10,878 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 [2022-01-18 09:52:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:10,886 INFO L225 Difference]: With dead ends: 7043 [2022-01-18 09:52:10,886 INFO L226 Difference]: Without dead ends: 7043 [2022-01-18 09:52:10,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:52:10,887 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1739 mSDsluCounter, 8915 mSDsCounter, 0 mSdLazyCounter, 3532 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 9475 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:10,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 9475 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3532 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:52:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7043 states. [2022-01-18 09:52:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7043 to 4872. [2022-01-18 09:52:10,953 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) [2022-01-18 09:52:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:52:10,958 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:52:10,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:10,958 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:52:10,958 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) [2022-01-18 09:52:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:52:10,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:10,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:10,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:52:10,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-18 09:52:10,962 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)] === [2022-01-18 09:52:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2006338119, now seen corresponding path program 35 times [2022-01-18 09:52:10,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:10,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693566343] [2022-01-18 09:52:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:10,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:11,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:11,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693566343] [2022-01-18 09:52:11,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693566343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:11,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:11,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:52:11,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311191705] [2022-01-18 09:52:11,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:11,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:52:11,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:11,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:52:11,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:52:11,712 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) [2022-01-18 09:52:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:16,067 INFO L93 Difference]: Finished difference Result 7396 states and 15187 transitions. [2022-01-18 09:52:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:16,067 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 [2022-01-18 09:52:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:16,075 INFO L225 Difference]: With dead ends: 7396 [2022-01-18 09:52:16,075 INFO L226 Difference]: Without dead ends: 7396 [2022-01-18 09:52:16,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:52:16,075 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1805 mSDsluCounter, 8932 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 9500 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:16,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1805 Valid, 9500 Invalid, 3596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:52:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2022-01-18 09:52:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 4900. [2022-01-18 09:52:16,122 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) [2022-01-18 09:52:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4900 states to 4900 states and 10030 transitions. [2022-01-18 09:52:16,128 INFO L78 Accepts]: Start accepts. Automaton has 4900 states and 10030 transitions. Word has length 99 [2022-01-18 09:52:16,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:16,128 INFO L470 AbstractCegarLoop]: Abstraction has 4900 states and 10030 transitions. [2022-01-18 09:52:16,129 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) [2022-01-18 09:52:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4900 states and 10030 transitions. [2022-01-18 09:52:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:16,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:16,132 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] [2022-01-18 09:52:16,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-18 09:52:16,132 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)] === [2022-01-18 09:52:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2098981631, now seen corresponding path program 36 times [2022-01-18 09:52:16,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:16,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627306999] [2022-01-18 09:52:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:16,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:16,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:16,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627306999] [2022-01-18 09:52:16,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627306999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:16,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:16,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:52:16,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145753581] [2022-01-18 09:52:16,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:16,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:52:16,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:16,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:52:16,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:52:16,785 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) [2022-01-18 09:52:21,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:21,448 INFO L93 Difference]: Finished difference Result 9343 states and 19190 transitions. [2022-01-18 09:52:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:52:21,449 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-18 09:52:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:21,460 INFO L225 Difference]: With dead ends: 9343 [2022-01-18 09:52:21,460 INFO L226 Difference]: Without dead ends: 9343 [2022-01-18 09:52:21,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 09:52:21,460 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1639 mSDsluCounter, 10325 mSDsCounter, 0 mSdLazyCounter, 3900 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 10939 SdHoareTripleChecker+Invalid, 3935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:21,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1639 Valid, 10939 Invalid, 3935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3900 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:52:21,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9343 states. [2022-01-18 09:52:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9343 to 4902. [2022-01-18 09:52:21,518 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) [2022-01-18 09:52:21,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 10034 transitions. [2022-01-18 09:52:21,524 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 10034 transitions. Word has length 99 [2022-01-18 09:52:21,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:21,524 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 10034 transitions. [2022-01-18 09:52:21,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:52:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 10034 transitions. [2022-01-18 09:52:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:21,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:21,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:52:21,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-18 09:52:21,528 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)] === [2022-01-18 09:52:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash -891812207, now seen corresponding path program 37 times [2022-01-18 09:52:21,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:21,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562770833] [2022-01-18 09:52:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:21,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:22,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:22,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562770833] [2022-01-18 09:52:22,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562770833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:22,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:22,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:52:22,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305249268] [2022-01-18 09:52:22,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:22,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:52:22,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:52:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:52:22,281 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) [2022-01-18 09:52:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:26,850 INFO L93 Difference]: Finished difference Result 7453 states and 15284 transitions. [2022-01-18 09:52:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:26,850 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 [2022-01-18 09:52:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:26,858 INFO L225 Difference]: With dead ends: 7453 [2022-01-18 09:52:26,858 INFO L226 Difference]: Without dead ends: 7453 [2022-01-18 09:52:26,858 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 [2022-01-18 09:52:26,859 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1670 mSDsluCounter, 9797 mSDsCounter, 0 mSdLazyCounter, 3759 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 10379 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:26,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1670 Valid, 10379 Invalid, 3802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3759 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:52:26,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7453 states. [2022-01-18 09:52:26,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7453 to 4884. [2022-01-18 09:52:26,908 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) [2022-01-18 09:52:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 9996 transitions. [2022-01-18 09:52:26,914 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 9996 transitions. Word has length 99 [2022-01-18 09:52:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:26,914 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 9996 transitions. [2022-01-18 09:52:26,914 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) [2022-01-18 09:52:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 9996 transitions. [2022-01-18 09:52:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:26,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:26,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:52:26,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-18 09:52:26,918 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)] === [2022-01-18 09:52:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash 718038743, now seen corresponding path program 38 times [2022-01-18 09:52:26,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:26,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534032171] [2022-01-18 09:52:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:26,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:27,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:27,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534032171] [2022-01-18 09:52:27,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534032171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:27,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:27,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:52:27,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35566566] [2022-01-18 09:52:27,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:27,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:52:27,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:52:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:52:27,708 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) [2022-01-18 09:52:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:32,026 INFO L93 Difference]: Finished difference Result 7481 states and 15357 transitions. [2022-01-18 09:52:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:32,026 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 [2022-01-18 09:52:32,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:32,034 INFO L225 Difference]: With dead ends: 7481 [2022-01-18 09:52:32,034 INFO L226 Difference]: Without dead ends: 7481 [2022-01-18 09:52:32,035 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 [2022-01-18 09:52:32,035 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1596 mSDsluCounter, 9045 mSDsCounter, 0 mSdLazyCounter, 3537 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 9617 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:32,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 9617 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3537 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:52:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7481 states. [2022-01-18 09:52:32,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7481 to 4882. [2022-01-18 09:52:32,082 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) [2022-01-18 09:52:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 9992 transitions. [2022-01-18 09:52:32,088 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 9992 transitions. Word has length 99 [2022-01-18 09:52:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:32,088 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 9992 transitions. [2022-01-18 09:52:32,088 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) [2022-01-18 09:52:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 9992 transitions. [2022-01-18 09:52:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:32,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:32,092 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] [2022-01-18 09:52:32,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-18 09:52:32,092 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)] === [2022-01-18 09:52:32,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:32,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1464411143, now seen corresponding path program 39 times [2022-01-18 09:52:32,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:32,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812086387] [2022-01-18 09:52:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:32,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:32,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:32,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812086387] [2022-01-18 09:52:32,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812086387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:32,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:32,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:52:32,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522413719] [2022-01-18 09:52:32,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:52:32,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:32,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:52:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:52:32,844 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) [2022-01-18 09:52:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:37,217 INFO L93 Difference]: Finished difference Result 7532 states and 15459 transitions. [2022-01-18 09:52:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:37,218 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 [2022-01-18 09:52:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:37,226 INFO L225 Difference]: With dead ends: 7532 [2022-01-18 09:52:37,226 INFO L226 Difference]: Without dead ends: 7532 [2022-01-18 09:52:37,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:52:37,227 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1616 mSDsluCounter, 10036 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 10607 SdHoareTripleChecker+Invalid, 3901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:37,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1616 Valid, 10607 Invalid, 3901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:52:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7532 states. [2022-01-18 09:52:37,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7532 to 4878. [2022-01-18 09:52:37,274 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) [2022-01-18 09:52:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 9984 transitions. [2022-01-18 09:52:37,281 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 9984 transitions. Word has length 99 [2022-01-18 09:52:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:37,281 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 9984 transitions. [2022-01-18 09:52:37,281 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) [2022-01-18 09:52:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 9984 transitions. [2022-01-18 09:52:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:37,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:37,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:52:37,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-18 09:52:37,285 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)] === [2022-01-18 09:52:37,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash 259071161, now seen corresponding path program 40 times [2022-01-18 09:52:37,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:37,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836579878] [2022-01-18 09:52:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:37,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:38,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:38,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836579878] [2022-01-18 09:52:38,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836579878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:38,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:38,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:52:38,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103658906] [2022-01-18 09:52:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:38,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:52:38,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:52:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:52:38,055 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) [2022-01-18 09:52:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:42,274 INFO L93 Difference]: Finished difference Result 7134 states and 14627 transitions. [2022-01-18 09:52:42,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:42,274 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 [2022-01-18 09:52:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:42,282 INFO L225 Difference]: With dead ends: 7134 [2022-01-18 09:52:42,282 INFO L226 Difference]: Without dead ends: 7134 [2022-01-18 09:52:42,283 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 [2022-01-18 09:52:42,283 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1531 mSDsluCounter, 8982 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 9548 SdHoareTripleChecker+Invalid, 3553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:42,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 9548 Invalid, 3553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:52:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2022-01-18 09:52:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 4872. [2022-01-18 09:52:42,335 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) [2022-01-18 09:52:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:52:42,340 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:52:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:42,341 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:52:42,341 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) [2022-01-18 09:52:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:52:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:42,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:42,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:52:42,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-18 09:52:42,344 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)] === [2022-01-18 09:52:42,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:42,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1251499575, now seen corresponding path program 41 times [2022-01-18 09:52:42,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:42,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96536626] [2022-01-18 09:52:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:42,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:43,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:43,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96536626] [2022-01-18 09:52:43,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96536626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:43,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:43,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:52:43,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549160417] [2022-01-18 09:52:43,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:43,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:52:43,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:52:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:52:43,067 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) [2022-01-18 09:52:47,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:47,524 INFO L93 Difference]: Finished difference Result 7472 states and 15339 transitions. [2022-01-18 09:52:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:47,524 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 [2022-01-18 09:52:47,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:47,532 INFO L225 Difference]: With dead ends: 7472 [2022-01-18 09:52:47,532 INFO L226 Difference]: Without dead ends: 7472 [2022-01-18 09:52:47,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:52:47,533 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1693 mSDsluCounter, 9833 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 10404 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:47,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1693 Valid, 10404 Invalid, 3923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:52:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2022-01-18 09:52:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 4902. [2022-01-18 09:52:47,579 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) [2022-01-18 09:52:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 10034 transitions. [2022-01-18 09:52:47,585 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 10034 transitions. Word has length 99 [2022-01-18 09:52:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:47,585 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 10034 transitions. [2022-01-18 09:52:47,586 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) [2022-01-18 09:52:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 10034 transitions. [2022-01-18 09:52:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:47,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:47,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:52:47,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-18 09:52:47,589 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)] === [2022-01-18 09:52:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1158856063, now seen corresponding path program 42 times [2022-01-18 09:52:47,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:47,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355906040] [2022-01-18 09:52:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:47,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:48,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:48,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355906040] [2022-01-18 09:52:48,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355906040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:48,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:48,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:52:48,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422608373] [2022-01-18 09:52:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:48,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:52:48,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:52:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:52:48,303 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) [2022-01-18 09:52:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:52,910 INFO L93 Difference]: Finished difference Result 9419 states and 19342 transitions. [2022-01-18 09:52:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:52:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-18 09:52:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:52,920 INFO L225 Difference]: With dead ends: 9419 [2022-01-18 09:52:52,920 INFO L226 Difference]: Without dead ends: 9419 [2022-01-18 09:52:52,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:52:52,921 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1966 mSDsluCounter, 9933 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 10550 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:52,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1966 Valid, 10550 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3570 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:52:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9419 states. [2022-01-18 09:52:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9419 to 4904. [2022-01-18 09:52:52,976 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) [2022-01-18 09:52:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 10038 transitions. [2022-01-18 09:52:53,004 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 10038 transitions. Word has length 99 [2022-01-18 09:52:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:53,004 INFO L470 AbstractCegarLoop]: Abstraction has 4904 states and 10038 transitions. [2022-01-18 09:52:53,004 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) [2022-01-18 09:52:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 10038 transitions. [2022-01-18 09:52:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:53,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:53,007 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] [2022-01-18 09:52:53,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-18 09:52:53,008 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)] === [2022-01-18 09:52:53,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1928941809, now seen corresponding path program 43 times [2022-01-18 09:52:53,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:53,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450333815] [2022-01-18 09:52:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:53,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:53,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:53,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450333815] [2022-01-18 09:52:53,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450333815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:53,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:53,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:52:53,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088909659] [2022-01-18 09:52:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:53,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:52:53,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:53,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:52:53,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:52:53,751 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) [2022-01-18 09:52:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:52:58,100 INFO L93 Difference]: Finished difference Result 7529 states and 15436 transitions. [2022-01-18 09:52:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:52:58,101 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 [2022-01-18 09:52:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:52:58,108 INFO L225 Difference]: With dead ends: 7529 [2022-01-18 09:52:58,108 INFO L226 Difference]: Without dead ends: 7529 [2022-01-18 09:52:58,109 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 [2022-01-18 09:52:58,109 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1697 mSDsluCounter, 9445 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 10030 SdHoareTripleChecker+Invalid, 3527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:52:58,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 10030 Invalid, 3527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:52:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2022-01-18 09:52:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 4886. [2022-01-18 09:52:58,162 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) [2022-01-18 09:52:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 10000 transitions. [2022-01-18 09:52:58,169 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 10000 transitions. Word has length 99 [2022-01-18 09:52:58,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:52:58,169 INFO L470 AbstractCegarLoop]: Abstraction has 4886 states and 10000 transitions. [2022-01-18 09:52:58,169 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) [2022-01-18 09:52:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 10000 transitions. [2022-01-18 09:52:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:52:58,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:52:58,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:52:58,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-18 09:52:58,173 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)] === [2022-01-18 09:52:58,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:52:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash -319090859, now seen corresponding path program 44 times [2022-01-18 09:52:58,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:52:58,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101373062] [2022-01-18 09:52:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:52:58,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:52:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:52:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:52:58,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:52:58,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101373062] [2022-01-18 09:52:58,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101373062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:52:58,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:52:58,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:52:58,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551552958] [2022-01-18 09:52:58,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:52:58,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:52:58,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:52:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:52:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:52:58,934 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) [2022-01-18 09:53:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:03,328 INFO L93 Difference]: Finished difference Result 7557 states and 15509 transitions. [2022-01-18 09:53:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:53:03,328 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-18 09:53:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:03,335 INFO L225 Difference]: With dead ends: 7557 [2022-01-18 09:53:03,335 INFO L226 Difference]: Without dead ends: 7557 [2022-01-18 09:53:03,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:53:03,336 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1699 mSDsluCounter, 9769 mSDsCounter, 0 mSdLazyCounter, 3810 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 10344 SdHoareTripleChecker+Invalid, 3845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:03,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 10344 Invalid, 3845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3810 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:53:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2022-01-18 09:53:03,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 4884. [2022-01-18 09:53:03,379 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) [2022-01-18 09:53:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 9996 transitions. [2022-01-18 09:53:03,384 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 9996 transitions. Word has length 99 [2022-01-18 09:53:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:03,384 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 9996 transitions. [2022-01-18 09:53:03,384 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) [2022-01-18 09:53:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 9996 transitions. [2022-01-18 09:53:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:03,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:03,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:03,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-18 09:53:03,388 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)] === [2022-01-18 09:53:03,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1793426551, now seen corresponding path program 45 times [2022-01-18 09:53:03,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:03,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453908766] [2022-01-18 09:53:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:03,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:04,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:04,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453908766] [2022-01-18 09:53:04,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453908766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:04,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:04,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:53:04,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056797049] [2022-01-18 09:53:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:04,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:53:04,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:04,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:53:04,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:53:04,135 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) [2022-01-18 09:53:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:08,527 INFO L93 Difference]: Finished difference Result 7608 states and 15611 transitions. [2022-01-18 09:53:08,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:53:08,527 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 [2022-01-18 09:53:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:08,536 INFO L225 Difference]: With dead ends: 7608 [2022-01-18 09:53:08,536 INFO L226 Difference]: Without dead ends: 7608 [2022-01-18 09:53:08,537 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 [2022-01-18 09:53:08,537 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1669 mSDsluCounter, 9368 mSDsCounter, 0 mSdLazyCounter, 3652 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 9942 SdHoareTripleChecker+Invalid, 3686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:08,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 9942 Invalid, 3686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3652 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:53:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7608 states. [2022-01-18 09:53:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7608 to 4880. [2022-01-18 09:53:08,596 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) [2022-01-18 09:53:08,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9988 transitions. [2022-01-18 09:53:08,602 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9988 transitions. Word has length 99 [2022-01-18 09:53:08,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:08,602 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9988 transitions. [2022-01-18 09:53:08,602 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) [2022-01-18 09:53:08,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9988 transitions. [2022-01-18 09:53:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:08,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:08,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:08,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-18 09:53:08,606 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)] === [2022-01-18 09:53:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash -778058441, now seen corresponding path program 46 times [2022-01-18 09:53:08,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:08,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527194802] [2022-01-18 09:53:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:08,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:09,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:09,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527194802] [2022-01-18 09:53:09,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527194802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:09,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:09,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:53:09,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028859965] [2022-01-18 09:53:09,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:09,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:53:09,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:09,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:53:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:53:09,306 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) [2022-01-18 09:53:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:13,597 INFO L93 Difference]: Finished difference Result 7693 states and 15781 transitions. [2022-01-18 09:53:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:53:13,597 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 [2022-01-18 09:53:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:13,606 INFO L225 Difference]: With dead ends: 7693 [2022-01-18 09:53:13,606 INFO L226 Difference]: Without dead ends: 7693 [2022-01-18 09:53:13,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:53:13,607 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 1520 mSDsluCounter, 9500 mSDsCounter, 0 mSdLazyCounter, 3674 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 10078 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:13,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 10078 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3674 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:53:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7693 states. [2022-01-18 09:53:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7693 to 4874. [2022-01-18 09:53:13,661 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) [2022-01-18 09:53:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 9976 transitions. [2022-01-18 09:53:13,668 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 9976 transitions. Word has length 99 [2022-01-18 09:53:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:13,668 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 9976 transitions. [2022-01-18 09:53:13,668 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) [2022-01-18 09:53:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 9976 transitions. [2022-01-18 09:53:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:13,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:13,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:13,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-18 09:53:13,672 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)] === [2022-01-18 09:53:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:13,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2006609387, now seen corresponding path program 47 times [2022-01-18 09:53:13,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:13,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108893368] [2022-01-18 09:53:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:13,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:14,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:14,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108893368] [2022-01-18 09:53:14,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108893368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:14,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:14,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:53:14,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756976741] [2022-01-18 09:53:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:14,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:53:14,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:53:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:53:14,575 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) [2022-01-18 09:53:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:19,829 INFO L93 Difference]: Finished difference Result 7877 states and 16157 transitions. [2022-01-18 09:53:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:53:19,830 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 [2022-01-18 09:53:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:19,837 INFO L225 Difference]: With dead ends: 7877 [2022-01-18 09:53:19,837 INFO L226 Difference]: Without dead ends: 7877 [2022-01-18 09:53:19,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1131, Invalid=5675, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:53:19,837 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1805 mSDsluCounter, 10129 mSDsCounter, 0 mSdLazyCounter, 4035 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 10702 SdHoareTripleChecker+Invalid, 4078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:19,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1805 Valid, 10702 Invalid, 4078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4035 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:53:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2022-01-18 09:53:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 5241. [2022-01-18 09:53:19,885 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) [2022-01-18 09:53:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 10746 transitions. [2022-01-18 09:53:19,892 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 10746 transitions. Word has length 99 [2022-01-18 09:53:19,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:19,892 INFO L470 AbstractCegarLoop]: Abstraction has 5241 states and 10746 transitions. [2022-01-18 09:53:19,893 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) [2022-01-18 09:53:19,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 10746 transitions. [2022-01-18 09:53:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:19,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:19,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:19,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-18 09:53:19,897 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)] === [2022-01-18 09:53:19,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:19,897 INFO L85 PathProgramCache]: Analyzing trace with hash -904543407, now seen corresponding path program 48 times [2022-01-18 09:53:19,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:19,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832851121] [2022-01-18 09:53:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:19,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:20,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:20,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832851121] [2022-01-18 09:53:20,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832851121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:20,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:20,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:53:20,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560205555] [2022-01-18 09:53:20,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:20,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:53:20,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:53:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:53:20,634 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) [2022-01-18 09:53:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:24,948 INFO L93 Difference]: Finished difference Result 8656 states and 17763 transitions. [2022-01-18 09:53:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:53:24,948 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-18 09:53:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:24,956 INFO L225 Difference]: With dead ends: 8656 [2022-01-18 09:53:24,957 INFO L226 Difference]: Without dead ends: 8656 [2022-01-18 09:53:24,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:53:24,957 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1596 mSDsluCounter, 9357 mSDsCounter, 0 mSdLazyCounter, 3475 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 9926 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:24,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 9926 Invalid, 3508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3475 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:53:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2022-01-18 09:53:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 4872. [2022-01-18 09:53:25,017 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) [2022-01-18 09:53:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:53:25,024 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:53:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:25,024 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:53:25,024 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) [2022-01-18 09:53:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:53:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:25,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:25,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:25,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-18 09:53:25,028 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)] === [2022-01-18 09:53:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1348039269, now seen corresponding path program 49 times [2022-01-18 09:53:25,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:25,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823338084] [2022-01-18 09:53:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:25,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:25,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:25,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823338084] [2022-01-18 09:53:25,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823338084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:25,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:25,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:53:25,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471130073] [2022-01-18 09:53:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:25,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:53:25,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:53:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:53:25,779 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) [2022-01-18 09:53:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:30,296 INFO L93 Difference]: Finished difference Result 7510 states and 15415 transitions. [2022-01-18 09:53:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:53:30,296 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 [2022-01-18 09:53:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:30,305 INFO L225 Difference]: With dead ends: 7510 [2022-01-18 09:53:30,305 INFO L226 Difference]: Without dead ends: 7510 [2022-01-18 09:53:30,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:53:30,306 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1809 mSDsluCounter, 9882 mSDsCounter, 0 mSdLazyCounter, 3870 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 10455 SdHoareTripleChecker+Invalid, 3913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:30,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1809 Valid, 10455 Invalid, 3913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3870 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:53:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7510 states. [2022-01-18 09:53:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7510 to 4904. [2022-01-18 09:53:30,360 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) [2022-01-18 09:53:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 10038 transitions. [2022-01-18 09:53:30,366 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 10038 transitions. Word has length 99 [2022-01-18 09:53:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:30,367 INFO L470 AbstractCegarLoop]: Abstraction has 4904 states and 10038 transitions. [2022-01-18 09:53:30,367 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) [2022-01-18 09:53:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 10038 transitions. [2022-01-18 09:53:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:30,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:30,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:30,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-18 09:53:30,371 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)] === [2022-01-18 09:53:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1255395757, now seen corresponding path program 50 times [2022-01-18 09:53:30,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:30,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653482950] [2022-01-18 09:53:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:30,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:31,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:31,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653482950] [2022-01-18 09:53:31,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653482950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:31,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:31,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:53:31,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846110660] [2022-01-18 09:53:31,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:31,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:53:31,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:31,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:53:31,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:53:31,033 INFO L87 Difference]: Start difference. First operand 4904 states and 10038 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) [2022-01-18 09:53:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:35,949 INFO L93 Difference]: Finished difference Result 9457 states and 19418 transitions. [2022-01-18 09:53:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:53:35,949 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 [2022-01-18 09:53:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:35,958 INFO L225 Difference]: With dead ends: 9457 [2022-01-18 09:53:35,958 INFO L226 Difference]: Without dead ends: 9457 [2022-01-18 09:53:35,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 09:53:35,959 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1590 mSDsluCounter, 11957 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 12576 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:35,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 12576 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4423 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 09:53:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9457 states. [2022-01-18 09:53:36,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9457 to 4906. [2022-01-18 09:53:36,010 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) [2022-01-18 09:53:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 10042 transitions. [2022-01-18 09:53:36,016 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 10042 transitions. Word has length 99 [2022-01-18 09:53:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:36,016 INFO L470 AbstractCegarLoop]: Abstraction has 4906 states and 10042 transitions. [2022-01-18 09:53:36,016 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) [2022-01-18 09:53:36,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 10042 transitions. [2022-01-18 09:53:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:36,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:36,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:36,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-18 09:53:36,020 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)] === [2022-01-18 09:53:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:36,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1832402115, now seen corresponding path program 51 times [2022-01-18 09:53:36,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:36,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941845535] [2022-01-18 09:53:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:36,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:36,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:36,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941845535] [2022-01-18 09:53:36,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941845535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:36,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:36,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:53:36,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268469737] [2022-01-18 09:53:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:36,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:53:36,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:53:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:53:36,762 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) [2022-01-18 09:53:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:41,218 INFO L93 Difference]: Finished difference Result 7567 states and 15512 transitions. [2022-01-18 09:53:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:53:41,218 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 [2022-01-18 09:53:41,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:41,226 INFO L225 Difference]: With dead ends: 7567 [2022-01-18 09:53:41,226 INFO L226 Difference]: Without dead ends: 7567 [2022-01-18 09:53:41,227 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 [2022-01-18 09:53:41,227 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1771 mSDsluCounter, 9979 mSDsCounter, 0 mSdLazyCounter, 3674 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 10566 SdHoareTripleChecker+Invalid, 3719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:41,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1771 Valid, 10566 Invalid, 3719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3674 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:53:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2022-01-18 09:53:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 4888. [2022-01-18 09:53:41,275 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) [2022-01-18 09:53:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 10004 transitions. [2022-01-18 09:53:41,281 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 10004 transitions. Word has length 99 [2022-01-18 09:53:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:41,281 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 10004 transitions. [2022-01-18 09:53:41,281 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) [2022-01-18 09:53:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 10004 transitions. [2022-01-18 09:53:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:41,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:41,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:41,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-18 09:53:41,285 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)] === [2022-01-18 09:53:41,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:41,285 INFO L85 PathProgramCache]: Analyzing trace with hash -222551165, now seen corresponding path program 52 times [2022-01-18 09:53:41,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:41,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744887866] [2022-01-18 09:53:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:41,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:42,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:42,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744887866] [2022-01-18 09:53:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744887866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:42,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:42,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:53:42,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687348701] [2022-01-18 09:53:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:42,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:53:42,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:42,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:53:42,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:53:42,234 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) [2022-01-18 09:53:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:48,171 INFO L93 Difference]: Finished difference Result 8631 states and 17745 transitions. [2022-01-18 09:53:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:53:48,171 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 [2022-01-18 09:53:48,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:48,181 INFO L225 Difference]: With dead ends: 8631 [2022-01-18 09:53:48,182 INFO L226 Difference]: Without dead ends: 8631 [2022-01-18 09:53:48,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1403, Invalid=7153, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 09:53:48,183 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 2137 mSDsluCounter, 10541 mSDsCounter, 0 mSdLazyCounter, 4251 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 11122 SdHoareTripleChecker+Invalid, 4305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 4251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:48,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2137 Valid, 11122 Invalid, 4305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 4251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:53:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8631 states. [2022-01-18 09:53:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8631 to 5153. [2022-01-18 09:53:48,251 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) [2022-01-18 09:53:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 10570 transitions. [2022-01-18 09:53:48,258 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 10570 transitions. Word has length 99 [2022-01-18 09:53:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:48,258 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 10570 transitions. [2022-01-18 09:53:48,258 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) [2022-01-18 09:53:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 10570 transitions. [2022-01-18 09:53:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:48,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:48,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:48,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-18 09:53:48,262 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)] === [2022-01-18 09:53:48,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash 879514815, now seen corresponding path program 53 times [2022-01-18 09:53:48,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:48,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345292714] [2022-01-18 09:53:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:48,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:49,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:49,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345292714] [2022-01-18 09:53:49,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345292714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:49,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:49,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:53:49,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717456013] [2022-01-18 09:53:49,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:49,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:53:49,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:49,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:53:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:53:49,014 INFO L87 Difference]: Start difference. First operand 5153 states and 10570 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) [2022-01-18 09:53:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:53:53,636 INFO L93 Difference]: Finished difference Result 9047 states and 18581 transitions. [2022-01-18 09:53:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:53:53,636 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 [2022-01-18 09:53:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:53:53,645 INFO L225 Difference]: With dead ends: 9047 [2022-01-18 09:53:53,645 INFO L226 Difference]: Without dead ends: 9047 [2022-01-18 09:53:53,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:53:53,646 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1672 mSDsluCounter, 10537 mSDsCounter, 0 mSdLazyCounter, 4061 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 11114 SdHoareTripleChecker+Invalid, 4103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:53:53,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 11114 Invalid, 4103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4061 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:53:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9047 states. [2022-01-18 09:53:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9047 to 4886. [2022-01-18 09:53:53,702 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) [2022-01-18 09:53:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 10000 transitions. [2022-01-18 09:53:53,708 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 10000 transitions. Word has length 99 [2022-01-18 09:53:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:53:53,708 INFO L470 AbstractCegarLoop]: Abstraction has 4886 states and 10000 transitions. [2022-01-18 09:53:53,708 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) [2022-01-18 09:53:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 10000 transitions. [2022-01-18 09:53:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:53:53,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:53:53,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:53:53,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-18 09:53:53,712 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)] === [2022-01-18 09:53:53,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:53:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1889966245, now seen corresponding path program 54 times [2022-01-18 09:53:53,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:53:53,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203538228] [2022-01-18 09:53:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:53:53,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:53:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:53:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:53:54,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:53:54,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203538228] [2022-01-18 09:53:54,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203538228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:53:54,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:53:54,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:53:54,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643362386] [2022-01-18 09:53:54,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:53:54,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:53:54,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:53:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:53:54,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:53:54,661 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) [2022-01-18 09:54:00,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:00,769 INFO L93 Difference]: Finished difference Result 8682 states and 17847 transitions. [2022-01-18 09:54:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:54:00,769 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 [2022-01-18 09:54:00,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:00,780 INFO L225 Difference]: With dead ends: 8682 [2022-01-18 09:54:00,780 INFO L226 Difference]: Without dead ends: 8682 [2022-01-18 09:54:00,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1403, Invalid=7153, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 09:54:00,781 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 2006 mSDsluCounter, 10881 mSDsCounter, 0 mSdLazyCounter, 4550 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 11461 SdHoareTripleChecker+Invalid, 4599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 4550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:00,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2006 Valid, 11461 Invalid, 4599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 4550 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 09:54:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2022-01-18 09:54:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 5185. [2022-01-18 09:54:00,844 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) [2022-01-18 09:54:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 10634 transitions. [2022-01-18 09:54:00,852 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 10634 transitions. Word has length 99 [2022-01-18 09:54:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:00,853 INFO L470 AbstractCegarLoop]: Abstraction has 5185 states and 10634 transitions. [2022-01-18 09:54:00,853 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) [2022-01-18 09:54:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 10634 transitions. [2022-01-18 09:54:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:00,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:00,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:00,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-18 09:54:00,857 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)] === [2022-01-18 09:54:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1302935071, now seen corresponding path program 55 times [2022-01-18 09:54:00,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:00,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240757743] [2022-01-18 09:54:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:00,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:01,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:01,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240757743] [2022-01-18 09:54:01,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240757743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:01,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:01,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:54:01,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131822721] [2022-01-18 09:54:01,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:01,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:54:01,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:01,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:54:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:54:01,616 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) [2022-01-18 09:54:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:06,056 INFO L93 Difference]: Finished difference Result 9098 states and 18683 transitions. [2022-01-18 09:54:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:54:06,056 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 [2022-01-18 09:54:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:06,065 INFO L225 Difference]: With dead ends: 9098 [2022-01-18 09:54:06,065 INFO L226 Difference]: Without dead ends: 9098 [2022-01-18 09:54:06,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:54:06,065 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1537 mSDsluCounter, 9821 mSDsCounter, 0 mSdLazyCounter, 3763 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 10397 SdHoareTripleChecker+Invalid, 3794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:06,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 10397 Invalid, 3794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3763 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:54:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9098 states. [2022-01-18 09:54:06,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9098 to 4882. [2022-01-18 09:54:06,117 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) [2022-01-18 09:54:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 9992 transitions. [2022-01-18 09:54:06,123 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 9992 transitions. Word has length 99 [2022-01-18 09:54:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:06,123 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 9992 transitions. [2022-01-18 09:54:06,123 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) [2022-01-18 09:54:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 9992 transitions. [2022-01-18 09:54:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:06,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:06,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:06,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-18 09:54:06,127 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)] === [2022-01-18 09:54:06,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash -681518747, now seen corresponding path program 56 times [2022-01-18 09:54:06,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:06,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109202523] [2022-01-18 09:54:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:06,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:06,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:06,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109202523] [2022-01-18 09:54:06,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109202523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:06,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:06,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:54:06,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349429862] [2022-01-18 09:54:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:06,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:54:06,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:54:06,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:54:06,991 INFO L87 Difference]: Start difference. First operand 4882 states and 9992 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) [2022-01-18 09:54:12,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:12,284 INFO L93 Difference]: Finished difference Result 8404 states and 17247 transitions. [2022-01-18 09:54:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:54:12,285 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 [2022-01-18 09:54:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:12,308 INFO L225 Difference]: With dead ends: 8404 [2022-01-18 09:54:12,308 INFO L226 Difference]: Without dead ends: 8404 [2022-01-18 09:54:12,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1131, Invalid=5675, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:54:12,309 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1839 mSDsluCounter, 10404 mSDsCounter, 0 mSdLazyCounter, 4172 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 10988 SdHoareTripleChecker+Invalid, 4217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 4172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:12,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 10988 Invalid, 4217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 4172 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:54:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8404 states. [2022-01-18 09:54:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8404 to 5232. [2022-01-18 09:54:12,355 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) [2022-01-18 09:54:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 10728 transitions. [2022-01-18 09:54:12,361 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 10728 transitions. Word has length 99 [2022-01-18 09:54:12,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:12,362 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 10728 transitions. [2022-01-18 09:54:12,362 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) [2022-01-18 09:54:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 10728 transitions. [2022-01-18 09:54:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:12,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:12,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:12,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-18 09:54:12,366 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)] === [2022-01-18 09:54:12,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:12,366 INFO L85 PathProgramCache]: Analyzing trace with hash 420547233, now seen corresponding path program 57 times [2022-01-18 09:54:12,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:12,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603188051] [2022-01-18 09:54:12,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:12,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:13,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:13,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603188051] [2022-01-18 09:54:13,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603188051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:13,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:13,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:54:13,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878631317] [2022-01-18 09:54:13,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:13,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:54:13,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:54:13,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:54:13,098 INFO L87 Difference]: Start difference. First operand 5232 states and 10728 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) [2022-01-18 09:54:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:17,481 INFO L93 Difference]: Finished difference Result 9183 states and 18853 transitions. [2022-01-18 09:54:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:54:17,482 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 [2022-01-18 09:54:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:17,491 INFO L225 Difference]: With dead ends: 9183 [2022-01-18 09:54:17,491 INFO L226 Difference]: Without dead ends: 9183 [2022-01-18 09:54:17,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:54:17,492 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1702 mSDsluCounter, 10281 mSDsCounter, 0 mSdLazyCounter, 3881 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 10861 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:17,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 10861 Invalid, 3922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3881 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:54:17,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9183 states. [2022-01-18 09:54:17,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9183 to 4876. [2022-01-18 09:54:17,543 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) [2022-01-18 09:54:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 9980 transitions. [2022-01-18 09:54:17,548 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 9980 transitions. Word has length 99 [2022-01-18 09:54:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:17,548 INFO L470 AbstractCegarLoop]: Abstraction has 4876 states and 9980 transitions. [2022-01-18 09:54:17,548 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) [2022-01-18 09:54:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 9980 transitions. [2022-01-18 09:54:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:17,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:17,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:17,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-18 09:54:17,552 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)] === [2022-01-18 09:54:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1910069693, now seen corresponding path program 58 times [2022-01-18 09:54:17,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:17,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593048090] [2022-01-18 09:54:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:17,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:18,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:18,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593048090] [2022-01-18 09:54:18,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593048090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:18,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:18,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:54:18,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696607594] [2022-01-18 09:54:18,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:18,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:54:18,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:18,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:54:18,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:54:18,289 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) [2022-01-18 09:54:22,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:22,630 INFO L93 Difference]: Finished difference Result 7799 states and 15993 transitions. [2022-01-18 09:54:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:54:22,631 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-18 09:54:22,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:22,639 INFO L225 Difference]: With dead ends: 7799 [2022-01-18 09:54:22,640 INFO L226 Difference]: Without dead ends: 7799 [2022-01-18 09:54:22,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:54:22,640 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1692 mSDsluCounter, 10232 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 10814 SdHoareTripleChecker+Invalid, 3823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:22,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 10814 Invalid, 3823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:54:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7799 states. [2022-01-18 09:54:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7799 to 4874. [2022-01-18 09:54:22,697 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) [2022-01-18 09:54:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 9976 transitions. [2022-01-18 09:54:22,703 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 9976 transitions. Word has length 99 [2022-01-18 09:54:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:22,704 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 9976 transitions. [2022-01-18 09:54:22,704 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) [2022-01-18 09:54:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 9976 transitions. [2022-01-18 09:54:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:22,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:22,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:22,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-18 09:54:22,708 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)] === [2022-01-18 09:54:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1959007845, now seen corresponding path program 59 times [2022-01-18 09:54:22,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:22,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088517009] [2022-01-18 09:54:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:22,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:23,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:23,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:23,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088517009] [2022-01-18 09:54:23,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088517009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:23,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:23,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:54:23,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787265964] [2022-01-18 09:54:23,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:23,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:54:23,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:54:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:54:23,588 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) [2022-01-18 09:54:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:28,881 INFO L93 Difference]: Finished difference Result 7913 states and 16229 transitions. [2022-01-18 09:54:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:54:28,881 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 [2022-01-18 09:54:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:28,890 INFO L225 Difference]: With dead ends: 7913 [2022-01-18 09:54:28,891 INFO L226 Difference]: Without dead ends: 7913 [2022-01-18 09:54:28,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1130, Invalid=5676, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:54:28,891 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1712 mSDsluCounter, 10665 mSDsCounter, 0 mSdLazyCounter, 4300 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 11239 SdHoareTripleChecker+Invalid, 4342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:28,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 11239 Invalid, 4342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4300 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:54:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2022-01-18 09:54:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 5258. [2022-01-18 09:54:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5255 states have (on average 2.0513796384395815) internal successors, (10780), 5257 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:54:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 10780 transitions. [2022-01-18 09:54:28,955 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 10780 transitions. Word has length 99 [2022-01-18 09:54:28,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:28,956 INFO L470 AbstractCegarLoop]: Abstraction has 5258 states and 10780 transitions. [2022-01-18 09:54:28,956 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) [2022-01-18 09:54:28,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 10780 transitions. [2022-01-18 09:54:28,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:28,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:28,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:28,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-18 09:54:28,960 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)] === [2022-01-18 09:54:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1233893471, now seen corresponding path program 60 times [2022-01-18 09:54:28,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:28,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439423242] [2022-01-18 09:54:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:28,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:29,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:29,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439423242] [2022-01-18 09:54:29,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439423242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:29,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:29,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:54:29,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393878411] [2022-01-18 09:54:29,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:29,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:54:29,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:54:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:54:29,673 INFO L87 Difference]: Start difference. First operand 5258 states and 10780 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) [2022-01-18 09:54:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:33,990 INFO L93 Difference]: Finished difference Result 8692 states and 17835 transitions. [2022-01-18 09:54:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:54:33,991 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 [2022-01-18 09:54:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:34,000 INFO L225 Difference]: With dead ends: 8692 [2022-01-18 09:54:34,001 INFO L226 Difference]: Without dead ends: 8692 [2022-01-18 09:54:34,001 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 [2022-01-18 09:54:34,001 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1568 mSDsluCounter, 10032 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 10602 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:34,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1568 Valid, 10602 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:54:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2022-01-18 09:54:34,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 4872. [2022-01-18 09:54:34,061 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) [2022-01-18 09:54:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:54:34,067 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:54:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:34,067 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:54:34,067 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) [2022-01-18 09:54:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:54:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:34,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:34,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:34,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-18 09:54:34,071 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)] === [2022-01-18 09:54:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1893386159, now seen corresponding path program 61 times [2022-01-18 09:54:34,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:34,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694478464] [2022-01-18 09:54:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:34,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:34,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:34,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694478464] [2022-01-18 09:54:34,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694478464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:34,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:34,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:54:34,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691337344] [2022-01-18 09:54:34,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:34,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:54:34,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:34,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:54:34,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:54:34,772 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) [2022-01-18 09:54:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:38,977 INFO L93 Difference]: Finished difference Result 7206 states and 14788 transitions. [2022-01-18 09:54:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:54:38,977 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 [2022-01-18 09:54:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:38,984 INFO L225 Difference]: With dead ends: 7206 [2022-01-18 09:54:38,985 INFO L226 Difference]: Without dead ends: 7206 [2022-01-18 09:54:38,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:54:38,985 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1628 mSDsluCounter, 8780 mSDsCounter, 0 mSdLazyCounter, 3176 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 9356 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:38,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 9356 Invalid, 3211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3176 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 09:54:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2022-01-18 09:54:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 4910. [2022-01-18 09:54:39,029 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) [2022-01-18 09:54:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 10050 transitions. [2022-01-18 09:54:39,035 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 10050 transitions. Word has length 99 [2022-01-18 09:54:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:39,035 INFO L470 AbstractCegarLoop]: Abstraction has 4910 states and 10050 transitions. [2022-01-18 09:54:39,035 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) [2022-01-18 09:54:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 10050 transitions. [2022-01-18 09:54:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:39,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:39,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:39,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-18 09:54:39,039 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)] === [2022-01-18 09:54:39,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:39,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1986029671, now seen corresponding path program 62 times [2022-01-18 09:54:39,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:39,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523597825] [2022-01-18 09:54:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:39,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:39,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:39,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523597825] [2022-01-18 09:54:39,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523597825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:39,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:39,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:54:39,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447324216] [2022-01-18 09:54:39,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:39,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:54:39,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:39,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:54:39,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:54:39,683 INFO L87 Difference]: Start difference. First operand 4910 states and 10050 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) [2022-01-18 09:54:44,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:44,277 INFO L93 Difference]: Finished difference Result 9153 states and 18791 transitions. [2022-01-18 09:54:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:54:44,278 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 [2022-01-18 09:54:44,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:44,287 INFO L225 Difference]: With dead ends: 9153 [2022-01-18 09:54:44,287 INFO L226 Difference]: Without dead ends: 9153 [2022-01-18 09:54:44,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:54:44,288 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 1666 mSDsluCounter, 10217 mSDsCounter, 0 mSdLazyCounter, 3620 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 10839 SdHoareTripleChecker+Invalid, 3661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:44,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1666 Valid, 10839 Invalid, 3661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3620 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:54:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9153 states. [2022-01-18 09:54:44,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9153 to 4912. [2022-01-18 09:54:44,345 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) [2022-01-18 09:54:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 10054 transitions. [2022-01-18 09:54:44,351 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 10054 transitions. Word has length 99 [2022-01-18 09:54:44,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:44,351 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 10054 transitions. [2022-01-18 09:54:44,351 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) [2022-01-18 09:54:44,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 10054 transitions. [2022-01-18 09:54:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:44,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:44,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:44,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-18 09:54:44,355 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)] === [2022-01-18 09:54:44,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:44,355 INFO L85 PathProgramCache]: Analyzing trace with hash -778860247, now seen corresponding path program 63 times [2022-01-18 09:54:44,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:44,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730750174] [2022-01-18 09:54:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:44,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:45,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:45,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730750174] [2022-01-18 09:54:45,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730750174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:45,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:45,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:54:45,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195683922] [2022-01-18 09:54:45,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:45,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:54:45,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:54:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:54:45,095 INFO L87 Difference]: Start difference. First operand 4912 states and 10054 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) [2022-01-18 09:54:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:49,662 INFO L93 Difference]: Finished difference Result 7263 states and 14885 transitions. [2022-01-18 09:54:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:54:49,663 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 [2022-01-18 09:54:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:49,670 INFO L225 Difference]: With dead ends: 7263 [2022-01-18 09:54:49,670 INFO L226 Difference]: Without dead ends: 7263 [2022-01-18 09:54:49,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=955, Invalid=4745, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:54:49,670 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1503 mSDsluCounter, 10879 mSDsCounter, 0 mSdLazyCounter, 4040 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 11469 SdHoareTripleChecker+Invalid, 4078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:49,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 11469 Invalid, 4078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4040 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:54:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7263 states. [2022-01-18 09:54:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7263 to 4894. [2022-01-18 09:54:49,716 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) [2022-01-18 09:54:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4894 states to 4894 states and 10016 transitions. [2022-01-18 09:54:49,722 INFO L78 Accepts]: Start accepts. Automaton has 4894 states and 10016 transitions. Word has length 99 [2022-01-18 09:54:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:49,723 INFO L470 AbstractCegarLoop]: Abstraction has 4894 states and 10016 transitions. [2022-01-18 09:54:49,723 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) [2022-01-18 09:54:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4894 states and 10016 transitions. [2022-01-18 09:54:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:49,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:49,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:49,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-18 09:54:49,726 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)] === [2022-01-18 09:54:49,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash 830990703, now seen corresponding path program 64 times [2022-01-18 09:54:49,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:49,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811893885] [2022-01-18 09:54:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:49,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:50,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:50,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811893885] [2022-01-18 09:54:50,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811893885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:50,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:50,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:54:50,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802009854] [2022-01-18 09:54:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:50,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:54:50,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:54:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:54:50,475 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) [2022-01-18 09:54:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:54:54,934 INFO L93 Difference]: Finished difference Result 7291 states and 14958 transitions. [2022-01-18 09:54:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:54:54,934 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 [2022-01-18 09:54:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:54:54,942 INFO L225 Difference]: With dead ends: 7291 [2022-01-18 09:54:54,942 INFO L226 Difference]: Without dead ends: 7291 [2022-01-18 09:54:54,943 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 [2022-01-18 09:54:54,943 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1745 mSDsluCounter, 9585 mSDsCounter, 0 mSdLazyCounter, 3736 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 10165 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:54:54,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1745 Valid, 10165 Invalid, 3774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3736 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:54:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7291 states. [2022-01-18 09:54:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7291 to 4892. [2022-01-18 09:54:54,993 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) [2022-01-18 09:54:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 10012 transitions. [2022-01-18 09:54:55,000 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 10012 transitions. Word has length 99 [2022-01-18 09:54:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:54:55,000 INFO L470 AbstractCegarLoop]: Abstraction has 4892 states and 10012 transitions. [2022-01-18 09:54:55,000 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) [2022-01-18 09:54:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 10012 transitions. [2022-01-18 09:54:55,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:54:55,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:54:55,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:54:55,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-18 09:54:55,004 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)] === [2022-01-18 09:54:55,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:54:55,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1351459183, now seen corresponding path program 65 times [2022-01-18 09:54:55,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:54:55,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002124422] [2022-01-18 09:54:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:54:55,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:54:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:54:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:54:55,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:54:55,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002124422] [2022-01-18 09:54:55,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002124422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:54:55,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:54:55,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:54:55,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495946440] [2022-01-18 09:54:55,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:54:55,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:54:55,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:54:55,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:54:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:54:55,962 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) [2022-01-18 09:55:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:02,172 INFO L93 Difference]: Finished difference Result 8378 states and 17220 transitions. [2022-01-18 09:55:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:55:02,172 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 [2022-01-18 09:55:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:02,181 INFO L225 Difference]: With dead ends: 8378 [2022-01-18 09:55:02,181 INFO L226 Difference]: Without dead ends: 8378 [2022-01-18 09:55:02,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1403, Invalid=7153, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 09:55:02,182 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1878 mSDsluCounter, 11571 mSDsCounter, 0 mSdLazyCounter, 4692 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 12154 SdHoareTripleChecker+Invalid, 4739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:02,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 12154 Invalid, 4739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4692 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 09:55:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8378 states. [2022-01-18 09:55:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8378 to 5191. [2022-01-18 09:55:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5188 states have (on average 2.052043176561295) internal successors, (10646), 5190 states have internal predecessors, (10646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:55:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 10646 transitions. [2022-01-18 09:55:02,244 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 10646 transitions. Word has length 99 [2022-01-18 09:55:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:02,245 INFO L470 AbstractCegarLoop]: Abstraction has 5191 states and 10646 transitions. [2022-01-18 09:55:02,245 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) [2022-01-18 09:55:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 10646 transitions. [2022-01-18 09:55:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:02,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:02,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:02,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-18 09:55:02,249 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)] === [2022-01-18 09:55:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:02,249 INFO L85 PathProgramCache]: Analyzing trace with hash -249393203, now seen corresponding path program 66 times [2022-01-18 09:55:02,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:02,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271051342] [2022-01-18 09:55:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:02,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:02,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:02,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271051342] [2022-01-18 09:55:02,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271051342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:02,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:02,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:55:02,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930346239] [2022-01-18 09:55:02,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:02,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:55:02,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:55:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:55:02,986 INFO L87 Difference]: Start difference. First operand 5191 states and 10646 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) [2022-01-18 09:55:07,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:07,354 INFO L93 Difference]: Finished difference Result 8794 states and 18056 transitions. [2022-01-18 09:55:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:55:07,355 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 [2022-01-18 09:55:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:07,364 INFO L225 Difference]: With dead ends: 8794 [2022-01-18 09:55:07,364 INFO L226 Difference]: Without dead ends: 8794 [2022-01-18 09:55:07,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:55:07,364 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1636 mSDsluCounter, 9253 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 9832 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:07,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1636 Valid, 9832 Invalid, 3575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:55:07,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8794 states. [2022-01-18 09:55:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8794 to 4888. [2022-01-18 09:55:07,419 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) [2022-01-18 09:55:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 10004 transitions. [2022-01-18 09:55:07,426 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 10004 transitions. Word has length 99 [2022-01-18 09:55:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:07,426 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 10004 transitions. [2022-01-18 09:55:07,426 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) [2022-01-18 09:55:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 10004 transitions. [2022-01-18 09:55:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:07,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:07,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:07,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-18 09:55:07,430 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)] === [2022-01-18 09:55:07,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash 372023121, now seen corresponding path program 67 times [2022-01-18 09:55:07,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:07,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677435137] [2022-01-18 09:55:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:07,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:08,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:08,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677435137] [2022-01-18 09:55:08,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677435137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:08,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:08,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:55:08,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413689137] [2022-01-18 09:55:08,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:08,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:55:08,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:08,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:55:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:55:08,186 INFO L87 Difference]: Start difference. First operand 4888 states and 10004 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) [2022-01-18 09:55:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:12,761 INFO L93 Difference]: Finished difference Result 7427 states and 15230 transitions. [2022-01-18 09:55:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:55:12,761 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 [2022-01-18 09:55:12,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:12,769 INFO L225 Difference]: With dead ends: 7427 [2022-01-18 09:55:12,769 INFO L226 Difference]: Without dead ends: 7427 [2022-01-18 09:55:12,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:55:12,770 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1563 mSDsluCounter, 10682 mSDsCounter, 0 mSdLazyCounter, 4111 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 11265 SdHoareTripleChecker+Invalid, 4147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 4111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:12,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1563 Valid, 11265 Invalid, 4147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 4111 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:55:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7427 states. [2022-01-18 09:55:12,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7427 to 4882. [2022-01-18 09:55:12,816 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) [2022-01-18 09:55:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 9992 transitions. [2022-01-18 09:55:12,822 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 9992 transitions. Word has length 99 [2022-01-18 09:55:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:12,822 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 9992 transitions. [2022-01-18 09:55:12,822 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) [2022-01-18 09:55:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 9992 transitions. [2022-01-18 09:55:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:12,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:12,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:12,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-18 09:55:12,826 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)] === [2022-01-18 09:55:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash -856527825, now seen corresponding path program 68 times [2022-01-18 09:55:12,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:12,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19732797] [2022-01-18 09:55:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:12,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:13,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19732797] [2022-01-18 09:55:13,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19732797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:13,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:13,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:55:13,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627208519] [2022-01-18 09:55:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:13,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:55:13,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:55:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:55:13,564 INFO L87 Difference]: Start difference. First operand 4882 states and 9992 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) [2022-01-18 09:55:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:17,754 INFO L93 Difference]: Finished difference Result 7495 states and 15366 transitions. [2022-01-18 09:55:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:55:17,755 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 [2022-01-18 09:55:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:17,763 INFO L225 Difference]: With dead ends: 7495 [2022-01-18 09:55:17,763 INFO L226 Difference]: Without dead ends: 7495 [2022-01-18 09:55:17,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:55:17,764 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1667 mSDsluCounter, 8993 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 9578 SdHoareTripleChecker+Invalid, 3465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:17,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1667 Valid, 9578 Invalid, 3465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3430 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:55:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2022-01-18 09:55:17,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 4880. [2022-01-18 09:55:17,811 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) [2022-01-18 09:55:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9988 transitions. [2022-01-18 09:55:17,817 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9988 transitions. Word has length 99 [2022-01-18 09:55:17,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:17,817 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9988 transitions. [2022-01-18 09:55:17,817 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) [2022-01-18 09:55:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9988 transitions. [2022-01-18 09:55:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:17,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:17,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:17,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-18 09:55:17,821 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)] === [2022-01-18 09:55:17,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:17,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1282417583, now seen corresponding path program 69 times [2022-01-18 09:55:17,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:17,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923056523] [2022-01-18 09:55:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:17,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:18,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:18,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923056523] [2022-01-18 09:55:18,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923056523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:18,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:18,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:55:18,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681053593] [2022-01-18 09:55:18,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:18,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:55:18,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:55:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:55:18,809 INFO L87 Difference]: Start difference. First operand 4880 states and 9988 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) [2022-01-18 09:55:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:24,933 INFO L93 Difference]: Finished difference Result 8565 states and 17594 transitions. [2022-01-18 09:55:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:55:24,934 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 [2022-01-18 09:55:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:24,942 INFO L225 Difference]: With dead ends: 8565 [2022-01-18 09:55:24,943 INFO L226 Difference]: Without dead ends: 8565 [2022-01-18 09:55:24,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1403, Invalid=7153, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 09:55:24,943 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 2155 mSDsluCounter, 10796 mSDsCounter, 0 mSdLazyCounter, 4466 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2155 SdHoareTripleChecker+Valid, 11386 SdHoareTripleChecker+Invalid, 4521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 4466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:24,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2155 Valid, 11386 Invalid, 4521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 4466 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 09:55:24,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8565 states. [2022-01-18 09:55:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8565 to 5264. [2022-01-18 09:55:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5261 states have (on average 2.0513210416270673) internal successors, (10792), 5263 states have internal predecessors, (10792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:55:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 10792 transitions. [2022-01-18 09:55:25,008 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 10792 transitions. Word has length 99 [2022-01-18 09:55:25,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:25,009 INFO L470 AbstractCegarLoop]: Abstraction has 5264 states and 10792 transitions. [2022-01-18 09:55:25,009 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) [2022-01-18 09:55:25,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 10792 transitions. [2022-01-18 09:55:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:25,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:25,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:25,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-18 09:55:25,013 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)] === [2022-01-18 09:55:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash -180351603, now seen corresponding path program 70 times [2022-01-18 09:55:25,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:25,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590944486] [2022-01-18 09:55:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:25,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:25,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:25,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590944486] [2022-01-18 09:55:25,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590944486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:25,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:25,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:55:25,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111349028] [2022-01-18 09:55:25,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:25,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:55:25,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:25,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:55:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:55:25,755 INFO L87 Difference]: Start difference. First operand 5264 states and 10792 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) [2022-01-18 09:55:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:29,978 INFO L93 Difference]: Finished difference Result 8981 states and 18430 transitions. [2022-01-18 09:55:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:55:29,978 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-18 09:55:29,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:29,988 INFO L225 Difference]: With dead ends: 8981 [2022-01-18 09:55:29,988 INFO L226 Difference]: Without dead ends: 8981 [2022-01-18 09:55:29,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:55:29,989 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1548 mSDsluCounter, 9410 mSDsCounter, 0 mSdLazyCounter, 3546 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 9996 SdHoareTripleChecker+Invalid, 3579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:29,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 9996 Invalid, 3579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3546 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:55:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8981 states. [2022-01-18 09:55:30,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8981 to 4878. [2022-01-18 09:55:30,048 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) [2022-01-18 09:55:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 9984 transitions. [2022-01-18 09:55:30,054 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 9984 transitions. Word has length 99 [2022-01-18 09:55:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:30,054 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 9984 transitions. [2022-01-18 09:55:30,055 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) [2022-01-18 09:55:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 9984 transitions. [2022-01-18 09:55:30,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:30,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:30,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:30,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-18 09:55:30,058 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)] === [2022-01-18 09:55:30,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:30,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1718301777, now seen corresponding path program 71 times [2022-01-18 09:55:30,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:30,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000705377] [2022-01-18 09:55:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:30,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:30,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:30,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000705377] [2022-01-18 09:55:30,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000705377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:30,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:30,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:55:30,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43685451] [2022-01-18 09:55:30,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:30,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:55:30,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:55:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:55:30,796 INFO L87 Difference]: Start difference. First operand 4878 states and 9984 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) [2022-01-18 09:55:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:35,107 INFO L93 Difference]: Finished difference Result 6934 states and 14208 transitions. [2022-01-18 09:55:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:55:35,107 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 [2022-01-18 09:55:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:35,114 INFO L225 Difference]: With dead ends: 6934 [2022-01-18 09:55:35,114 INFO L226 Difference]: Without dead ends: 6934 [2022-01-18 09:55:35,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:55:35,115 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1641 mSDsluCounter, 10269 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 10843 SdHoareTripleChecker+Invalid, 3732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:35,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1641 Valid, 10843 Invalid, 3732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:55:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2022-01-18 09:55:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 4872. [2022-01-18 09:55:35,162 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) [2022-01-18 09:55:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:55:35,168 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:55:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:35,168 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:55:35,168 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) [2022-01-18 09:55:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:55:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:35,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:35,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:35,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-18 09:55:35,172 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)] === [2022-01-18 09:55:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash -86186341, now seen corresponding path program 72 times [2022-01-18 09:55:35,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:35,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816299114] [2022-01-18 09:55:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:35,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:35,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816299114] [2022-01-18 09:55:35,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816299114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:35,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:35,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:55:35,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067698958] [2022-01-18 09:55:35,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:35,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:55:35,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:35,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:55:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:55:35,942 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) [2022-01-18 09:55:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:40,317 INFO L93 Difference]: Finished difference Result 6530 states and 13401 transitions. [2022-01-18 09:55:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:55:40,317 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 [2022-01-18 09:55:40,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:40,324 INFO L225 Difference]: With dead ends: 6530 [2022-01-18 09:55:40,324 INFO L226 Difference]: Without dead ends: 6530 [2022-01-18 09:55:40,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:55:40,324 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1689 mSDsluCounter, 9441 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 9993 SdHoareTripleChecker+Invalid, 3747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:40,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1689 Valid, 9993 Invalid, 3747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:55:40,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2022-01-18 09:55:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 4896. [2022-01-18 09:55:40,366 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) [2022-01-18 09:55:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 10023 transitions. [2022-01-18 09:55:40,372 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 10023 transitions. Word has length 99 [2022-01-18 09:55:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:40,373 INFO L470 AbstractCegarLoop]: Abstraction has 4896 states and 10023 transitions. [2022-01-18 09:55:40,373 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) [2022-01-18 09:55:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 10023 transitions. [2022-01-18 09:55:40,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:40,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:40,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:40,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-18 09:55:40,376 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)] === [2022-01-18 09:55:40,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash -178829853, now seen corresponding path program 73 times [2022-01-18 09:55:40,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:40,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413188488] [2022-01-18 09:55:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:40,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:41,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:41,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413188488] [2022-01-18 09:55:41,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413188488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:41,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:41,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:55:41,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992807384] [2022-01-18 09:55:41,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:41,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:55:41,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:41,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:55:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:55:41,008 INFO L87 Difference]: Start difference. First operand 4896 states and 10023 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) [2022-01-18 09:55:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:45,774 INFO L93 Difference]: Finished difference Result 8589 states and 17647 transitions. [2022-01-18 09:55:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:55:45,775 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 [2022-01-18 09:55:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:45,783 INFO L225 Difference]: With dead ends: 8589 [2022-01-18 09:55:45,784 INFO L226 Difference]: Without dead ends: 8589 [2022-01-18 09:55:45,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 09:55:45,784 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1725 mSDsluCounter, 10087 mSDsCounter, 0 mSdLazyCounter, 3715 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 10685 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:45,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 10685 Invalid, 3752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3715 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:55:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8589 states. [2022-01-18 09:55:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8589 to 4898. [2022-01-18 09:55:45,837 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) [2022-01-18 09:55:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 10027 transitions. [2022-01-18 09:55:45,843 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 10027 transitions. Word has length 99 [2022-01-18 09:55:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:45,843 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 10027 transitions. [2022-01-18 09:55:45,843 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) [2022-01-18 09:55:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 10027 transitions. [2022-01-18 09:55:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:45,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:45,846 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] [2022-01-18 09:55:45,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-18 09:55:45,846 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)] === [2022-01-18 09:55:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1028339571, now seen corresponding path program 74 times [2022-01-18 09:55:45,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:45,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793545639] [2022-01-18 09:55:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:45,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:46,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:46,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793545639] [2022-01-18 09:55:46,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793545639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:46,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:46,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:55:46,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25008963] [2022-01-18 09:55:46,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:46,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:55:46,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:55:46,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:55:46,636 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) [2022-01-18 09:55:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:51,332 INFO L93 Difference]: Finished difference Result 6631 states and 13605 transitions. [2022-01-18 09:55:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:55:51,332 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 [2022-01-18 09:55:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:51,339 INFO L225 Difference]: With dead ends: 6631 [2022-01-18 09:55:51,339 INFO L226 Difference]: Without dead ends: 6631 [2022-01-18 09:55:51,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:55:51,340 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1577 mSDsluCounter, 10337 mSDsCounter, 0 mSdLazyCounter, 4034 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 10903 SdHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:51,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 10903 Invalid, 4074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4034 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:55:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2022-01-18 09:55:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 4880. [2022-01-18 09:55:51,384 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) [2022-01-18 09:55:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9989 transitions. [2022-01-18 09:55:51,390 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9989 transitions. Word has length 99 [2022-01-18 09:55:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:51,390 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9989 transitions. [2022-01-18 09:55:51,390 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) [2022-01-18 09:55:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9989 transitions. [2022-01-18 09:55:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:51,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:51,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:51,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-18 09:55:51,394 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)] === [2022-01-18 09:55:51,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:51,394 INFO L85 PathProgramCache]: Analyzing trace with hash -966883357, now seen corresponding path program 75 times [2022-01-18 09:55:51,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:51,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460493172] [2022-01-18 09:55:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:51,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:52,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:52,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460493172] [2022-01-18 09:55:52,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460493172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:52,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:52,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:55:52,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391604683] [2022-01-18 09:55:52,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:52,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:55:52,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:52,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:55:52,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:55:52,107 INFO L87 Difference]: Start difference. First operand 4880 states and 9989 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) [2022-01-18 09:55:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:55:57,410 INFO L93 Difference]: Finished difference Result 8741 states and 17957 transitions. [2022-01-18 09:55:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 09:55:57,410 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 [2022-01-18 09:55:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:55:57,419 INFO L225 Difference]: With dead ends: 8741 [2022-01-18 09:55:57,419 INFO L226 Difference]: Without dead ends: 8741 [2022-01-18 09:55:57,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1180, Invalid=5462, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 09:55:57,420 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 1714 mSDsluCounter, 11419 mSDsCounter, 0 mSdLazyCounter, 4123 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 12041 SdHoareTripleChecker+Invalid, 4160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:55:57,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1714 Valid, 12041 Invalid, 4160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4123 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:55:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2022-01-18 09:55:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 4881. [2022-01-18 09:55:57,472 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) [2022-01-18 09:55:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4881 states to 4881 states and 9991 transitions. [2022-01-18 09:55:57,478 INFO L78 Accepts]: Start accepts. Automaton has 4881 states and 9991 transitions. Word has length 99 [2022-01-18 09:55:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:55:57,478 INFO L470 AbstractCegarLoop]: Abstraction has 4881 states and 9991 transitions. [2022-01-18 09:55:57,478 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) [2022-01-18 09:55:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4881 states and 9991 transitions. [2022-01-18 09:55:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:55:57,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:55:57,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:55:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-18 09:55:57,482 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)] === [2022-01-18 09:55:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:55:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash -988076429, now seen corresponding path program 76 times [2022-01-18 09:55:57,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:55:57,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016165628] [2022-01-18 09:55:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:55:57,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:55:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:55:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:55:58,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:55:58,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016165628] [2022-01-18 09:55:58,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016165628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:55:58,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:55:58,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:55:58,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110953664] [2022-01-18 09:55:58,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:55:58,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:55:58,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:55:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:55:58,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:55:58,144 INFO L87 Difference]: Start difference. First operand 4881 states and 9991 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) [2022-01-18 09:56:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:02,830 INFO L93 Difference]: Finished difference Result 7688 states and 15784 transitions. [2022-01-18 09:56:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:56:02,831 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 [2022-01-18 09:56:02,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:02,839 INFO L225 Difference]: With dead ends: 7688 [2022-01-18 09:56:02,839 INFO L226 Difference]: Without dead ends: 7688 [2022-01-18 09:56:02,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1044, Invalid=4962, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 09:56:02,840 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1843 mSDsluCounter, 10085 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 10675 SdHoareTripleChecker+Invalid, 3703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:02,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 10675 Invalid, 3703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:56:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7688 states. [2022-01-18 09:56:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7688 to 4883. [2022-01-18 09:56:02,892 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) [2022-01-18 09:56:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 9995 transitions. [2022-01-18 09:56:02,898 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 9995 transitions. Word has length 99 [2022-01-18 09:56:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:02,898 INFO L470 AbstractCegarLoop]: Abstraction has 4883 states and 9995 transitions. [2022-01-18 09:56:02,898 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) [2022-01-18 09:56:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 9995 transitions. [2022-01-18 09:56:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:02,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:02,902 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] [2022-01-18 09:56:02,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-18 09:56:02,902 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)] === [2022-01-18 09:56:02,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1472913395, now seen corresponding path program 77 times [2022-01-18 09:56:02,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:02,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528737430] [2022-01-18 09:56:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:02,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:03,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:03,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528737430] [2022-01-18 09:56:03,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528737430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:03,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:03,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:56:03,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280697340] [2022-01-18 09:56:03,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:03,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:56:03,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:56:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:56:03,690 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) [2022-01-18 09:56:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:08,101 INFO L93 Difference]: Finished difference Result 6643 states and 13630 transitions. [2022-01-18 09:56:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:56:08,101 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 [2022-01-18 09:56:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:08,108 INFO L225 Difference]: With dead ends: 6643 [2022-01-18 09:56:08,108 INFO L226 Difference]: Without dead ends: 6643 [2022-01-18 09:56:08,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=950, Invalid=4750, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:56:08,109 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1515 mSDsluCounter, 9693 mSDsCounter, 0 mSdLazyCounter, 3509 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 10259 SdHoareTripleChecker+Invalid, 3549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:08,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 10259 Invalid, 3549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3509 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:56:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6643 states. [2022-01-18 09:56:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 4872. [2022-01-18 09:56:08,151 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) [2022-01-18 09:56:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-18 09:56:08,157 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-18 09:56:08,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:08,157 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-18 09:56:08,157 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) [2022-01-18 09:56:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-18 09:56:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:08,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:08,160 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] [2022-01-18 09:56:08,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-18 09:56:08,160 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)] === [2022-01-18 09:56:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:08,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1628672577, now seen corresponding path program 78 times [2022-01-18 09:56:08,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:08,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785471178] [2022-01-18 09:56:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:08,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:08,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:08,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785471178] [2022-01-18 09:56:08,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785471178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:08,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:08,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:56:08,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321027313] [2022-01-18 09:56:08,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:08,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:56:08,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:08,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:56:08,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:56:08,827 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) [2022-01-18 09:56:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:14,003 INFO L93 Difference]: Finished difference Result 7027 states and 14376 transitions. [2022-01-18 09:56:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 09:56:14,004 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 [2022-01-18 09:56:14,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:14,012 INFO L225 Difference]: With dead ends: 7027 [2022-01-18 09:56:14,012 INFO L226 Difference]: Without dead ends: 7027 [2022-01-18 09:56:14,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1251, Invalid=5721, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 09:56:14,013 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1976 mSDsluCounter, 10521 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 11111 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:14,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1976 Valid, 11111 Invalid, 3728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3681 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:56:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7027 states. [2022-01-18 09:56:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7027 to 4887. [2022-01-18 09:56:14,065 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) [2022-01-18 09:56:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 10002 transitions. [2022-01-18 09:56:14,071 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 10002 transitions. Word has length 99 [2022-01-18 09:56:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:14,071 INFO L470 AbstractCegarLoop]: Abstraction has 4887 states and 10002 transitions. [2022-01-18 09:56:14,071 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) [2022-01-18 09:56:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 10002 transitions. [2022-01-18 09:56:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:14,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:14,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:56:14,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-18 09:56:14,075 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)] === [2022-01-18 09:56:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:14,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1781291341, now seen corresponding path program 79 times [2022-01-18 09:56:14,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:14,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042942198] [2022-01-18 09:56:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:14,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:14,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042942198] [2022-01-18 09:56:14,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042942198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:14,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:14,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:56:14,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175849259] [2022-01-18 09:56:14,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:14,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:56:14,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:56:14,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:56:14,822 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) [2022-01-18 09:56:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:19,979 INFO L93 Difference]: Finished difference Result 7452 states and 15275 transitions. [2022-01-18 09:56:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 09:56:19,979 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 [2022-01-18 09:56:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:19,986 INFO L225 Difference]: With dead ends: 7452 [2022-01-18 09:56:19,986 INFO L226 Difference]: Without dead ends: 7452 [2022-01-18 09:56:19,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1172, Invalid=5470, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 09:56:19,987 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 2070 mSDsluCounter, 10479 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 11069 SdHoareTripleChecker+Invalid, 3746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:19,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2070 Valid, 11069 Invalid, 3746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:56:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7452 states. [2022-01-18 09:56:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7452 to 4888. [2022-01-18 09:56:20,033 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) [2022-01-18 09:56:20,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 10004 transitions. [2022-01-18 09:56:20,039 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 10004 transitions. Word has length 99 [2022-01-18 09:56:20,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:20,039 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 10004 transitions. [2022-01-18 09:56:20,039 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) [2022-01-18 09:56:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 10004 transitions. [2022-01-18 09:56:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:20,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:20,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:56:20,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-18 09:56:20,043 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)] === [2022-01-18 09:56:20,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:20,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1760098269, now seen corresponding path program 80 times [2022-01-18 09:56:20,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:20,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686739388] [2022-01-18 09:56:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:20,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:20,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:20,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686739388] [2022-01-18 09:56:20,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686739388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:20,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:20,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:56:20,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274851448] [2022-01-18 09:56:20,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:20,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:56:20,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:56:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:56:20,750 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) [2022-01-18 09:56:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:25,417 INFO L93 Difference]: Finished difference Result 7365 states and 15098 transitions. [2022-01-18 09:56:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:56:25,418 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 [2022-01-18 09:56:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:25,426 INFO L225 Difference]: With dead ends: 7365 [2022-01-18 09:56:25,426 INFO L226 Difference]: Without dead ends: 7365 [2022-01-18 09:56:25,426 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 [2022-01-18 09:56:25,426 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1647 mSDsluCounter, 10351 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 10918 SdHoareTripleChecker+Invalid, 3845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:25,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 10918 Invalid, 3845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:56:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7365 states. [2022-01-18 09:56:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7365 to 4890. [2022-01-18 09:56:25,477 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) [2022-01-18 09:56:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 10008 transitions. [2022-01-18 09:56:25,484 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 10008 transitions. Word has length 99 [2022-01-18 09:56:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:25,484 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 10008 transitions. [2022-01-18 09:56:25,484 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) [2022-01-18 09:56:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 10008 transitions. [2022-01-18 09:56:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:25,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:25,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:56:25,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-18 09:56:25,488 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)] === [2022-01-18 09:56:25,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:25,488 INFO L85 PathProgramCache]: Analyzing trace with hash -73879203, now seen corresponding path program 81 times [2022-01-18 09:56:25,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:25,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206868282] [2022-01-18 09:56:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:25,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:26,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:26,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206868282] [2022-01-18 09:56:26,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206868282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:26,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:26,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:56:26,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773005524] [2022-01-18 09:56:26,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:26,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:56:26,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:56:26,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:56:26,197 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) [2022-01-18 09:56:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:30,461 INFO L93 Difference]: Finished difference Result 6320 states and 12944 transitions. [2022-01-18 09:56:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:56:30,462 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 [2022-01-18 09:56:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:30,469 INFO L225 Difference]: With dead ends: 6320 [2022-01-18 09:56:30,469 INFO L226 Difference]: Without dead ends: 6320 [2022-01-18 09:56:30,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=931, Invalid=4619, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:56:30,470 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1613 mSDsluCounter, 9090 mSDsCounter, 0 mSdLazyCounter, 3339 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 9633 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:30,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 9633 Invalid, 3378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3339 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:56:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2022-01-18 09:56:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 4887. [2022-01-18 09:56:30,533 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) [2022-01-18 09:56:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 10002 transitions. [2022-01-18 09:56:30,538 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 10002 transitions. Word has length 99 [2022-01-18 09:56:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:30,538 INFO L470 AbstractCegarLoop]: Abstraction has 4887 states and 10002 transitions. [2022-01-18 09:56:30,538 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) [2022-01-18 09:56:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 10002 transitions. [2022-01-18 09:56:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:30,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:30,542 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, 1, 1, 1] [2022-01-18 09:56:30,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-18 09:56:30,542 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)] === [2022-01-18 09:56:30,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:30,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1594576337, now seen corresponding path program 82 times [2022-01-18 09:56:30,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:30,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153671282] [2022-01-18 09:56:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:30,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:31,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:31,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153671282] [2022-01-18 09:56:31,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153671282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:31,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:31,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:56:31,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56513553] [2022-01-18 09:56:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:31,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:56:31,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:56:31,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:56:31,288 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) [2022-01-18 09:56:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:35,736 INFO L93 Difference]: Finished difference Result 6916 states and 14212 transitions. [2022-01-18 09:56:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:56:35,736 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 [2022-01-18 09:56:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:35,744 INFO L225 Difference]: With dead ends: 6916 [2022-01-18 09:56:35,744 INFO L226 Difference]: Without dead ends: 6916 [2022-01-18 09:56:35,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:56:35,745 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1461 mSDsluCounter, 9893 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 10450 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:35,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 10450 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3850 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:56:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2022-01-18 09:56:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 4912. [2022-01-18 09:56:35,796 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) [2022-01-18 09:56:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 10055 transitions. [2022-01-18 09:56:35,825 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 10055 transitions. Word has length 99 [2022-01-18 09:56:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:35,825 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 10055 transitions. [2022-01-18 09:56:35,825 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) [2022-01-18 09:56:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 10055 transitions. [2022-01-18 09:56:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:35,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:35,828 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] [2022-01-18 09:56:35,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-18 09:56:35,828 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)] === [2022-01-18 09:56:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1687219849, now seen corresponding path program 83 times [2022-01-18 09:56:35,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:35,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917085776] [2022-01-18 09:56:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:35,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:36,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:36,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917085776] [2022-01-18 09:56:36,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917085776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:36,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:36,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:56:36,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983989122] [2022-01-18 09:56:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:36,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:56:36,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:56:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:56:36,548 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) [2022-01-18 09:56:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:41,541 INFO L93 Difference]: Finished difference Result 8975 states and 18458 transitions. [2022-01-18 09:56:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:56:41,542 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 [2022-01-18 09:56:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:41,551 INFO L225 Difference]: With dead ends: 8975 [2022-01-18 09:56:41,551 INFO L226 Difference]: Without dead ends: 8975 [2022-01-18 09:56:41,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:56:41,551 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1597 mSDsluCounter, 10975 mSDsCounter, 0 mSdLazyCounter, 4097 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 11578 SdHoareTripleChecker+Invalid, 4136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:41,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 11578 Invalid, 4136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4097 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:56:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-01-18 09:56:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 4914. [2022-01-18 09:56:41,608 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) [2022-01-18 09:56:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 10059 transitions. [2022-01-18 09:56:41,614 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 10059 transitions. Word has length 99 [2022-01-18 09:56:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:41,615 INFO L470 AbstractCegarLoop]: Abstraction has 4914 states and 10059 transitions. [2022-01-18 09:56:41,615 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) [2022-01-18 09:56:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 10059 transitions. [2022-01-18 09:56:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:41,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:41,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:56:41,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-18 09:56:41,619 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)] === [2022-01-18 09:56:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:41,619 INFO L85 PathProgramCache]: Analyzing trace with hash -480050425, now seen corresponding path program 84 times [2022-01-18 09:56:41,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:41,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56698533] [2022-01-18 09:56:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:41,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:42,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56698533] [2022-01-18 09:56:42,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56698533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:42,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:42,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:56:42,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818887419] [2022-01-18 09:56:42,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:42,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:56:42,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:42,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:56:42,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:56:42,293 INFO L87 Difference]: Start difference. First operand 4914 states and 10059 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) [2022-01-18 09:56:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:46,885 INFO L93 Difference]: Finished difference Result 7017 states and 14416 transitions. [2022-01-18 09:56:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:56:46,885 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 [2022-01-18 09:56:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:46,892 INFO L225 Difference]: With dead ends: 7017 [2022-01-18 09:56:46,892 INFO L226 Difference]: Without dead ends: 7017 [2022-01-18 09:56:46,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:56:46,892 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1520 mSDsluCounter, 10427 mSDsCounter, 0 mSdLazyCounter, 4123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 10998 SdHoareTripleChecker+Invalid, 4157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:46,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 10998 Invalid, 4157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4123 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:56:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2022-01-18 09:56:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 4896. [2022-01-18 09:56:46,935 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) [2022-01-18 09:56:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 10021 transitions. [2022-01-18 09:56:46,940 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 10021 transitions. Word has length 99 [2022-01-18 09:56:46,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:46,940 INFO L470 AbstractCegarLoop]: Abstraction has 4896 states and 10021 transitions. [2022-01-18 09:56:46,940 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) [2022-01-18 09:56:46,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 10021 transitions. [2022-01-18 09:56:46,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:46,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:46,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:56:46,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-18 09:56:46,943 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)] === [2022-01-18 09:56:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1819693943, now seen corresponding path program 85 times [2022-01-18 09:56:46,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918446502] [2022-01-18 09:56:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:46,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:47,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:47,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918446502] [2022-01-18 09:56:47,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918446502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:47,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:47,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:56:47,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679603796] [2022-01-18 09:56:47,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:47,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:56:47,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:47,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:56:47,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:56:47,580 INFO L87 Difference]: Start difference. First operand 4896 states and 10021 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) [2022-01-18 09:56:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:52,658 INFO L93 Difference]: Finished difference Result 9008 states and 18510 transitions. [2022-01-18 09:56:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 09:56:52,658 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 [2022-01-18 09:56:52,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:52,667 INFO L225 Difference]: With dead ends: 9008 [2022-01-18 09:56:52,667 INFO L226 Difference]: Without dead ends: 9008 [2022-01-18 09:56:52,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 09:56:52,668 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1776 mSDsluCounter, 10957 mSDsCounter, 0 mSdLazyCounter, 3854 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 11584 SdHoareTripleChecker+Invalid, 3890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:52,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1776 Valid, 11584 Invalid, 3890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3854 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:56:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9008 states. [2022-01-18 09:56:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9008 to 4897. [2022-01-18 09:56:52,719 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) [2022-01-18 09:56:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4897 states to 4897 states and 10023 transitions. [2022-01-18 09:56:52,725 INFO L78 Accepts]: Start accepts. Automaton has 4897 states and 10023 transitions. Word has length 99 [2022-01-18 09:56:52,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:52,726 INFO L470 AbstractCegarLoop]: Abstraction has 4897 states and 10023 transitions. [2022-01-18 09:56:52,726 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) [2022-01-18 09:56:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4897 states and 10023 transitions. [2022-01-18 09:56:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:52,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:52,729 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, 1, 1, 1] [2022-01-18 09:56:52,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-18 09:56:52,729 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)] === [2022-01-18 09:56:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:52,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1798500871, now seen corresponding path program 86 times [2022-01-18 09:56:52,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:52,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773104969] [2022-01-18 09:56:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:52,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:53,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:53,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773104969] [2022-01-18 09:56:53,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773104969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:53,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:53,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:56:53,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560424521] [2022-01-18 09:56:53,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:53,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:56:53,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:53,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:56:53,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:56:53,476 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) [2022-01-18 09:56:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:56:58,285 INFO L93 Difference]: Finished difference Result 8031 states and 16489 transitions. [2022-01-18 09:56:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:56:58,286 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 [2022-01-18 09:56:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:56:58,294 INFO L225 Difference]: With dead ends: 8031 [2022-01-18 09:56:58,294 INFO L226 Difference]: Without dead ends: 8031 [2022-01-18 09:56:58,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:56:58,294 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1739 mSDsluCounter, 10211 mSDsCounter, 0 mSdLazyCounter, 3737 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 10806 SdHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:56:58,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 10806 Invalid, 3778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3737 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:56:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8031 states. [2022-01-18 09:56:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8031 to 4899. [2022-01-18 09:56:58,346 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) [2022-01-18 09:56:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 10027 transitions. [2022-01-18 09:56:58,352 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 10027 transitions. Word has length 99 [2022-01-18 09:56:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:56:58,352 INFO L470 AbstractCegarLoop]: Abstraction has 4899 states and 10027 transitions. [2022-01-18 09:56:58,352 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) [2022-01-18 09:56:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 10027 transitions. [2022-01-18 09:56:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:56:58,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:56:58,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:56:58,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-18 09:56:58,356 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)] === [2022-01-18 09:56:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:56:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -35476601, now seen corresponding path program 87 times [2022-01-18 09:56:58,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:56:58,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012978812] [2022-01-18 09:56:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:56:58,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:56:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:56:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:56:59,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:56:59,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012978812] [2022-01-18 09:56:59,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012978812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:56:59,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:56:59,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:56:59,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745761384] [2022-01-18 09:56:59,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:56:59,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:56:59,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:56:59,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:56:59,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:56:59,161 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) [2022-01-18 09:57:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:03,660 INFO L93 Difference]: Finished difference Result 6986 states and 14335 transitions. [2022-01-18 09:57:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:57:03,660 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 [2022-01-18 09:57:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:03,668 INFO L225 Difference]: With dead ends: 6986 [2022-01-18 09:57:03,668 INFO L226 Difference]: Without dead ends: 6986 [2022-01-18 09:57:03,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=950, Invalid=4750, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:57:03,669 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1451 mSDsluCounter, 10058 mSDsCounter, 0 mSdLazyCounter, 3766 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 10629 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:03,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 10629 Invalid, 3803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3766 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:57:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2022-01-18 09:57:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 4888. [2022-01-18 09:57:03,719 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) [2022-01-18 09:57:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 10004 transitions. [2022-01-18 09:57:03,725 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 10004 transitions. Word has length 99 [2022-01-18 09:57:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:03,725 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 10004 transitions. [2022-01-18 09:57:03,726 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) [2022-01-18 09:57:03,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 10004 transitions. [2022-01-18 09:57:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:03,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:03,729 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, 1, 1, 1] [2022-01-18 09:57:03,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-18 09:57:03,730 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)] === [2022-01-18 09:57:03,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash -67592007, now seen corresponding path program 88 times [2022-01-18 09:57:03,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:03,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019041092] [2022-01-18 09:57:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:03,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:04,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:04,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019041092] [2022-01-18 09:57:04,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019041092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:04,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:04,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:57:04,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689192757] [2022-01-18 09:57:04,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:04,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:57:04,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:57:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:57:04,445 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) [2022-01-18 09:57:08,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:08,853 INFO L93 Difference]: Finished difference Result 6889 states and 14155 transitions. [2022-01-18 09:57:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:57:08,853 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-18 09:57:08,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:08,860 INFO L225 Difference]: With dead ends: 6889 [2022-01-18 09:57:08,860 INFO L226 Difference]: Without dead ends: 6889 [2022-01-18 09:57:08,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:57:08,861 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1469 mSDsluCounter, 9520 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 10076 SdHoareTripleChecker+Invalid, 3736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:08,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 10076 Invalid, 3736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3704 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:57:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6889 states. [2022-01-18 09:57:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6889 to 4906. [2022-01-18 09:57:08,905 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) [2022-01-18 09:57:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 10042 transitions. [2022-01-18 09:57:08,911 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 10042 transitions. Word has length 99 [2022-01-18 09:57:08,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:08,911 INFO L470 AbstractCegarLoop]: Abstraction has 4906 states and 10042 transitions. [2022-01-18 09:57:08,911 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) [2022-01-18 09:57:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 10042 transitions. [2022-01-18 09:57:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:08,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:08,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:08,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-18 09:57:08,915 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)] === [2022-01-18 09:57:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash -160235519, now seen corresponding path program 89 times [2022-01-18 09:57:08,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:08,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622021485] [2022-01-18 09:57:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:08,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:09,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:09,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622021485] [2022-01-18 09:57:09,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622021485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:09,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:09,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:57:09,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578180106] [2022-01-18 09:57:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:09,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:57:09,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:57:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:57:09,594 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) [2022-01-18 09:57:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:14,409 INFO L93 Difference]: Finished difference Result 8836 states and 18158 transitions. [2022-01-18 09:57:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:57:14,409 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 [2022-01-18 09:57:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:14,417 INFO L225 Difference]: With dead ends: 8836 [2022-01-18 09:57:14,418 INFO L226 Difference]: Without dead ends: 8836 [2022-01-18 09:57:14,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:57:14,418 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1704 mSDsluCounter, 10848 mSDsCounter, 0 mSdLazyCounter, 4058 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 11450 SdHoareTripleChecker+Invalid, 4101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:14,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1704 Valid, 11450 Invalid, 4101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4058 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:57:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2022-01-18 09:57:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 4908. [2022-01-18 09:57:14,469 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) [2022-01-18 09:57:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 10046 transitions. [2022-01-18 09:57:14,475 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 10046 transitions. Word has length 99 [2022-01-18 09:57:14,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:14,475 INFO L470 AbstractCegarLoop]: Abstraction has 4908 states and 10046 transitions. [2022-01-18 09:57:14,475 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) [2022-01-18 09:57:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 10046 transitions. [2022-01-18 09:57:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:14,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:14,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:14,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-18 09:57:14,479 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)] === [2022-01-18 09:57:14,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1046933905, now seen corresponding path program 90 times [2022-01-18 09:57:14,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:14,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326917075] [2022-01-18 09:57:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:14,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:15,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326917075] [2022-01-18 09:57:15,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326917075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:15,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:15,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:57:15,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999625551] [2022-01-18 09:57:15,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:15,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:57:15,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:57:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:57:15,244 INFO L87 Difference]: Start difference. First operand 4908 states and 10046 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) [2022-01-18 09:57:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:19,784 INFO L93 Difference]: Finished difference Result 6946 states and 14252 transitions. [2022-01-18 09:57:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:57:19,784 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 [2022-01-18 09:57:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:19,791 INFO L225 Difference]: With dead ends: 6946 [2022-01-18 09:57:19,791 INFO L226 Difference]: Without dead ends: 6946 [2022-01-18 09:57:19,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:57:19,792 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1554 mSDsluCounter, 9745 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 10315 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:19,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 10315 Invalid, 3739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:57:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2022-01-18 09:57:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 4890. [2022-01-18 09:57:19,833 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) [2022-01-18 09:57:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 10008 transitions. [2022-01-18 09:57:19,839 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 10008 transitions. Word has length 99 [2022-01-18 09:57:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:19,839 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 10008 transitions. [2022-01-18 09:57:19,839 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) [2022-01-18 09:57:19,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 10008 transitions. [2022-01-18 09:57:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:19,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:19,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:19,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-18 09:57:19,843 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)] === [2022-01-18 09:57:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:19,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1638182441, now seen corresponding path program 91 times [2022-01-18 09:57:19,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:19,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815662806] [2022-01-18 09:57:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:19,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:20,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815662806] [2022-01-18 09:57:20,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815662806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:20,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:20,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:57:20,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996538589] [2022-01-18 09:57:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:20,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:57:20,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:57:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:57:20,591 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) [2022-01-18 09:57:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:25,066 INFO L93 Difference]: Finished difference Result 6633 states and 13607 transitions. [2022-01-18 09:57:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:57:25,067 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 [2022-01-18 09:57:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:25,074 INFO L225 Difference]: With dead ends: 6633 [2022-01-18 09:57:25,075 INFO L226 Difference]: Without dead ends: 6633 [2022-01-18 09:57:25,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:57:25,075 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1514 mSDsluCounter, 9757 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 10311 SdHoareTripleChecker+Invalid, 3882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:25,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 10311 Invalid, 3882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:57:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2022-01-18 09:57:25,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 4887. [2022-01-18 09:57:25,124 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) [2022-01-18 09:57:25,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 10002 transitions. [2022-01-18 09:57:25,131 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 10002 transitions. Word has length 99 [2022-01-18 09:57:25,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:25,131 INFO L470 AbstractCegarLoop]: Abstraction has 4887 states and 10002 transitions. [2022-01-18 09:57:25,131 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) [2022-01-18 09:57:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 10002 transitions. [2022-01-18 09:57:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:25,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:25,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:25,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-18 09:57:25,135 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)] === [2022-01-18 09:57:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1568360313, now seen corresponding path program 92 times [2022-01-18 09:57:25,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:25,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456633330] [2022-01-18 09:57:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:25,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:25,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456633330] [2022-01-18 09:57:25,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456633330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:25,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:25,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:57:25,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871048764] [2022-01-18 09:57:25,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:25,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:57:25,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:25,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:57:25,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:57:25,879 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) [2022-01-18 09:57:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:30,287 INFO L93 Difference]: Finished difference Result 6976 states and 14332 transitions. [2022-01-18 09:57:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:57:30,288 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 [2022-01-18 09:57:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:30,295 INFO L225 Difference]: With dead ends: 6976 [2022-01-18 09:57:30,295 INFO L226 Difference]: Without dead ends: 6976 [2022-01-18 09:57:30,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:57:30,295 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1653 mSDsluCounter, 9557 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 10114 SdHoareTripleChecker+Invalid, 3795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:30,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 10114 Invalid, 3795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:57:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6976 states. [2022-01-18 09:57:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6976 to 4914. [2022-01-18 09:57:30,341 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) [2022-01-18 09:57:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 10059 transitions. [2022-01-18 09:57:30,347 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 10059 transitions. Word has length 99 [2022-01-18 09:57:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:30,348 INFO L470 AbstractCegarLoop]: Abstraction has 4914 states and 10059 transitions. [2022-01-18 09:57:30,348 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) [2022-01-18 09:57:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 10059 transitions. [2022-01-18 09:57:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:30,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:30,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:30,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-18 09:57:30,351 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)] === [2022-01-18 09:57:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1661003825, now seen corresponding path program 93 times [2022-01-18 09:57:30,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059281424] [2022-01-18 09:57:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:30,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:31,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:31,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059281424] [2022-01-18 09:57:31,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059281424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:31,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:31,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:57:31,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142141509] [2022-01-18 09:57:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:31,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:57:31,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:57:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:57:31,006 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) [2022-01-18 09:57:36,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:36,028 INFO L93 Difference]: Finished difference Result 9035 states and 18578 transitions. [2022-01-18 09:57:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:57:36,028 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 [2022-01-18 09:57:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:36,037 INFO L225 Difference]: With dead ends: 9035 [2022-01-18 09:57:36,037 INFO L226 Difference]: Without dead ends: 9035 [2022-01-18 09:57:36,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:57:36,038 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1607 mSDsluCounter, 11052 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 11655 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:36,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1607 Valid, 11655 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4258 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:57:36,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9035 states. [2022-01-18 09:57:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9035 to 4916. [2022-01-18 09:57:36,092 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) [2022-01-18 09:57:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 10063 transitions. [2022-01-18 09:57:36,099 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 10063 transitions. Word has length 99 [2022-01-18 09:57:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:36,099 INFO L470 AbstractCegarLoop]: Abstraction has 4916 states and 10063 transitions. [2022-01-18 09:57:36,099 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) [2022-01-18 09:57:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 10063 transitions. [2022-01-18 09:57:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:36,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:36,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:36,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-18 09:57:36,103 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)] === [2022-01-18 09:57:36,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:36,103 INFO L85 PathProgramCache]: Analyzing trace with hash -453834401, now seen corresponding path program 94 times [2022-01-18 09:57:36,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:36,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742651999] [2022-01-18 09:57:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:36,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:36,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:36,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742651999] [2022-01-18 09:57:36,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742651999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:36,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:36,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:57:36,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167013051] [2022-01-18 09:57:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:36,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:57:36,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:57:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:57:36,859 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) [2022-01-18 09:57:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:41,359 INFO L93 Difference]: Finished difference Result 7077 states and 14536 transitions. [2022-01-18 09:57:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:57:41,359 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 [2022-01-18 09:57:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:41,367 INFO L225 Difference]: With dead ends: 7077 [2022-01-18 09:57:41,367 INFO L226 Difference]: Without dead ends: 7077 [2022-01-18 09:57:41,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:57:41,368 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1617 mSDsluCounter, 9341 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 9912 SdHoareTripleChecker+Invalid, 3586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:41,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 9912 Invalid, 3586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:57:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2022-01-18 09:57:41,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 4898. [2022-01-18 09:57:41,420 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) [2022-01-18 09:57:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 10025 transitions. [2022-01-18 09:57:41,427 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 10025 transitions. Word has length 99 [2022-01-18 09:57:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:41,427 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 10025 transitions. [2022-01-18 09:57:41,427 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) [2022-01-18 09:57:41,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 10025 transitions. [2022-01-18 09:57:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:41,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:41,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:41,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-18 09:57:41,431 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)] === [2022-01-18 09:57:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1845909967, now seen corresponding path program 95 times [2022-01-18 09:57:41,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:41,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939312341] [2022-01-18 09:57:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:41,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:42,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:42,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939312341] [2022-01-18 09:57:42,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939312341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:42,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:42,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-18 09:57:42,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771076160] [2022-01-18 09:57:42,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:42,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 09:57:42,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:42,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 09:57:42,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-18 09:57:42,051 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) [2022-01-18 09:57:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:47,203 INFO L93 Difference]: Finished difference Result 9068 states and 18630 transitions. [2022-01-18 09:57:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 09:57:47,203 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 [2022-01-18 09:57:47,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:47,212 INFO L225 Difference]: With dead ends: 9068 [2022-01-18 09:57:47,212 INFO L226 Difference]: Without dead ends: 9068 [2022-01-18 09:57:47,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 09:57:47,213 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1654 mSDsluCounter, 11061 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 11688 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:47,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 11688 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 09:57:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9068 states. [2022-01-18 09:57:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9068 to 4899. [2022-01-18 09:57:47,263 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) [2022-01-18 09:57:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 10027 transitions. [2022-01-18 09:57:47,268 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 10027 transitions. Word has length 99 [2022-01-18 09:57:47,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:47,269 INFO L470 AbstractCegarLoop]: Abstraction has 4899 states and 10027 transitions. [2022-01-18 09:57:47,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:57:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 10027 transitions. [2022-01-18 09:57:47,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:47,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:47,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:47,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-18 09:57:47,272 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)] === [2022-01-18 09:57:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1824716895, now seen corresponding path program 96 times [2022-01-18 09:57:47,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:47,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925976999] [2022-01-18 09:57:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:47,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:48,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:48,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925976999] [2022-01-18 09:57:48,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925976999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:48,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:48,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:57:48,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099036562] [2022-01-18 09:57:48,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:48,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:57:48,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:57:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:57:48,003 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) [2022-01-18 09:57:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:52,876 INFO L93 Difference]: Finished difference Result 8091 states and 16609 transitions. [2022-01-18 09:57:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 09:57:52,877 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 [2022-01-18 09:57:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:52,886 INFO L225 Difference]: With dead ends: 8091 [2022-01-18 09:57:52,887 INFO L226 Difference]: Without dead ends: 8091 [2022-01-18 09:57:52,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 09:57:52,887 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1610 mSDsluCounter, 11067 mSDsCounter, 0 mSdLazyCounter, 4060 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 11662 SdHoareTripleChecker+Invalid, 4098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:52,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 11662 Invalid, 4098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4060 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 09:57:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2022-01-18 09:57:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 4901. [2022-01-18 09:57:52,948 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) [2022-01-18 09:57:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4901 states to 4901 states and 10031 transitions. [2022-01-18 09:57:52,955 INFO L78 Accepts]: Start accepts. Automaton has 4901 states and 10031 transitions. Word has length 99 [2022-01-18 09:57:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:52,955 INFO L470 AbstractCegarLoop]: Abstraction has 4901 states and 10031 transitions. [2022-01-18 09:57:52,955 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) [2022-01-18 09:57:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4901 states and 10031 transitions. [2022-01-18 09:57:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:52,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:52,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:52,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-18 09:57:52,959 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)] === [2022-01-18 09:57:52,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash -9260577, now seen corresponding path program 97 times [2022-01-18 09:57:52,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:52,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740534927] [2022-01-18 09:57:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:52,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:53,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:53,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740534927] [2022-01-18 09:57:53,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740534927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:53,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:53,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-18 09:57:53,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836071536] [2022-01-18 09:57:53,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:53,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 09:57:53,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 09:57:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 09:57:53,712 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) [2022-01-18 09:57:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:57:57,931 INFO L93 Difference]: Finished difference Result 7046 states and 14455 transitions. [2022-01-18 09:57:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 09:57:57,932 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 [2022-01-18 09:57:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:57:57,939 INFO L225 Difference]: With dead ends: 7046 [2022-01-18 09:57:57,939 INFO L226 Difference]: Without dead ends: 7046 [2022-01-18 09:57:57,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=950, Invalid=4750, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 09:57:57,940 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1643 mSDsluCounter, 9377 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 9948 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 09:57:57,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 9948 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 09:57:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7046 states. [2022-01-18 09:57:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7046 to 4890. [2022-01-18 09:57:57,985 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) [2022-01-18 09:57:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 10008 transitions. [2022-01-18 09:57:57,991 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 10008 transitions. Word has length 99 [2022-01-18 09:57:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:57:57,991 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 10008 transitions. [2022-01-18 09:57:57,992 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) [2022-01-18 09:57:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 10008 transitions. [2022-01-18 09:57:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:57:57,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:57:57,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:57:57,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-18 09:57:57,995 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)] === [2022-01-18 09:57:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:57:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -41375983, now seen corresponding path program 98 times [2022-01-18 09:57:57,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:57:57,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731681231] [2022-01-18 09:57:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:57:57,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:57:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:57:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:57:58,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:57:58,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731681231] [2022-01-18 09:57:58,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731681231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:57:58,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:57:58,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-18 09:57:58,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260908846] [2022-01-18 09:57:58,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:57:58,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 09:57:58,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:57:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 09:57:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 09:57:58,918 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) [2022-01-18 09:58:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:58:04,281 INFO L93 Difference]: Finished difference Result 7975 states and 16410 transitions. [2022-01-18 09:58:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 09:58:04,282 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 [2022-01-18 09:58:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:58:04,292 INFO L225 Difference]: With dead ends: 7975 [2022-01-18 09:58:04,292 INFO L226 Difference]: Without dead ends: 7975 [2022-01-18 09:58:04,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1133, Invalid=5673, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 09:58:04,293 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1913 mSDsluCounter, 9845 mSDsCounter, 0 mSdLazyCounter, 4119 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 10411 SdHoareTripleChecker+Invalid, 4165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:58:04,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 10411 Invalid, 4165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4119 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 09:58:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7975 states. [2022-01-18 09:58:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7975 to 5201. [2022-01-18 09:58:04,355 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) [2022-01-18 09:58:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 10685 transitions. [2022-01-18 09:58:04,362 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 10685 transitions. Word has length 99 [2022-01-18 09:58:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:58:04,362 INFO L470 AbstractCegarLoop]: Abstraction has 5201 states and 10685 transitions. [2022-01-18 09:58:04,362 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) [2022-01-18 09:58:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 10685 transitions. [2022-01-18 09:58:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 09:58:04,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:58:04,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:58:04,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-18 09:58:04,367 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)] === [2022-01-18 09:58:04,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:58:04,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1060689997, now seen corresponding path program 99 times [2022-01-18 09:58:04,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:58:04,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938541776] [2022-01-18 09:58:04,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:58:04,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:58:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:58:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:58:05,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:58:05,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938541776] [2022-01-18 09:58:05,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938541776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:58:05,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:58:05,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-18 09:58:05,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54495265] [2022-01-18 09:58:05,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:58:05,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 09:58:05,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:58:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 09:58:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1238, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 09:58:05,400 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) Received shutdown request... [2022-01-18 09:58:07,428 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-01-18 09:58:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 09:58:07,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=447, Invalid=2415, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 09:58:07,428 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 570 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 09:58:07,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 3135 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 09:58:07,430 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-01-18 09:58:07,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-18 09:58:07,430 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (5201states) and FLOYD_HOARE automaton (currently 20 states, 37 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 116 for 85ms.. [2022-01-18 09:58:07,432 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-01-18 09:58:07,432 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-01-18 09:58:07,432 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-01-18 09:58:07,432 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 7 remaining) [2022-01-18 09:58:07,432 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-01-18 09:58:07,432 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-01-18 09:58:07,434 INFO L732 BasicCegarLoop]: Path program histogram: [99, 24, 1, 1, 1] [2022-01-18 09:58:07,436 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 09:58:07,436 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 09:58:07,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 09:58:07 BasicIcfg [2022-01-18 09:58:07,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 09:58:07,438 INFO L158 Benchmark]: Toolchain (without parser) took 715411.69ms. Allocated memory was 375.4MB in the beginning and 713.0MB in the end (delta: 337.6MB). Free memory was 318.3MB in the beginning and 614.9MB in the end (delta: -296.7MB). Peak memory consumption was 42.7MB. Max. memory is 16.0GB. [2022-01-18 09:58:07,438 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 375.4MB. Free memory is still 336.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 09:58:07,438 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.23ms. Allocated memory was 375.4MB in the beginning and 480.2MB in the end (delta: 104.9MB). Free memory was 318.0MB in the beginning and 439.2MB in the end (delta: -121.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.0GB. [2022-01-18 09:58:07,438 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.03ms. Allocated memory is still 480.2MB. Free memory was 439.2MB in the beginning and 436.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 09:58:07,438 INFO L158 Benchmark]: Boogie Preprocessor took 31.31ms. Allocated memory is still 480.2MB. Free memory was 436.1MB in the beginning and 435.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 09:58:07,438 INFO L158 Benchmark]: RCFGBuilder took 336.71ms. Allocated memory is still 480.2MB. Free memory was 435.0MB in the beginning and 418.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-18 09:58:07,438 INFO L158 Benchmark]: TraceAbstraction took 714563.81ms. Allocated memory was 480.2MB in the beginning and 713.0MB in the end (delta: 232.8MB). Free memory was 417.2MB in the beginning and 614.9MB in the end (delta: -197.8MB). Peak memory consumption was 36.1MB. Max. memory is 16.0GB. [2022-01-18 09:58:07,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 375.4MB. Free memory is still 336.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 418.23ms. Allocated memory was 375.4MB in the beginning and 480.2MB in the end (delta: 104.9MB). Free memory was 318.0MB in the beginning and 439.2MB in the end (delta: -121.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.03ms. Allocated memory is still 480.2MB. Free memory was 439.2MB in the beginning and 436.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.31ms. Allocated memory is still 480.2MB. Free memory was 436.1MB in the beginning and 435.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 336.71ms. Allocated memory is still 480.2MB. Free memory was 435.0MB in the beginning and 418.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 714563.81ms. Allocated memory was 480.2MB in the beginning and 713.0MB in the end (delta: 232.8MB). Free memory was 417.2MB in the beginning and 614.9MB in the end (delta: -197.8MB). Peak memory consumption was 36.1MB. Max. memory is 16.0GB. * 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 (5201states) and FLOYD_HOARE automaton (currently 20 states, 37 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 116 for 85ms.. - TimeoutResultAtElement [Line: 836]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5201states) and FLOYD_HOARE automaton (currently 20 states, 37 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 116 for 85ms.. - TimeoutResultAtElement [Line: 837]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5201states) and FLOYD_HOARE automaton (currently 20 states, 37 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 116 for 85ms.. - 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 (5201states) and FLOYD_HOARE automaton (currently 20 states, 37 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 116 for 85ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 220 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 714.5s, OverallIterations: 126, TraceHistogramMax: 1, PathProgramHistogramMax: 99, EmptinessCheckTime: 0.4s, AutomataDifference: 617.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 200266 SdHoareTripleChecker+Valid, 164.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 200266 mSDsluCounter, 1156425 SdHoareTripleChecker+Invalid, 139.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1090350 mSDsCounter, 4833 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 427506 IncrementalHoareTripleChecker+Invalid, 432339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4833 mSolverCounterUnsat, 66075 mSDtfsCounter, 427506 mSolverCounterSat, 2.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10013 GetRequests, 514 SyntacticMatches, 69 SemanticMatches, 9429 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133444 ImplicationChecksByTransitivity, 486.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5264occurred in iteration=96, InterpolantAutomatonStates: 6086, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.0s AutomataMinimizationTime, 125 MinimizatonAttempts, 310007 StatesRemovedByMinimization, 124 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 87.5s InterpolantComputationTime, 12260 NumberOfCodeBlocks, 12260 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 12134 ConstructedInterpolants, 0 QuantifiedInterpolants, 217900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 126 InterpolantComputations, 126 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 [2022-01-18 09:58:07,443 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Completed graceful shutdown