/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 10:57:03,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 10:57:03,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 10:57:03,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 10:57:03,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 10:57:03,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 10:57:03,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 10:57:03,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 10:57:03,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 10:57:03,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 10:57:03,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 10:57:03,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 10:57:03,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 10:57:03,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 10:57:03,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 10:57:03,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 10:57:03,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 10:57:03,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 10:57:03,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 10:57:03,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 10:57:03,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 10:57:03,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 10:57:03,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 10:57:03,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 10:57:03,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 10:57:03,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 10:57:03,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 10:57:03,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 10:57:03,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 10:57:03,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-23 10:57:03,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 10:57:03,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 10:57:03,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 10:57:03,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 10:57:03,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 10:57:03,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 10:57:03,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 10:57:03,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 10:57:03,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 10:57:03,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 10:57:03,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 10:57:03,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-23 10:57:03,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 10:57:03,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 10:57:03,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-23 10:57:03,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-23 10:57:03,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 10:57:03,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 10:57:03,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 10:57:03,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 10:57:03,805 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 10:57:03,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 10:57:03,805 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 10:57:03,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 10:57:03,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 10:57:03,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 10:57:03,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 10:57:03,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 10:57:03,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 10:57:03,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 10:57:03,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 10:57:03,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 10:57:03,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 10:57:03,809 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-23 10:57:03,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-23 10:57:03,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 10:57:03,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 10:57:03,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 10:57:04,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 10:57:04,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 10:57:04,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 10:57:04,020 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 10:57:04,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2022-02-23 10:57:04,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e32165df/6406b8b361e946f18a5d6c826caaa374/FLAG6cf9d955d [2022-02-23 10:57:04,409 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 10:57:04,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2022-02-23 10:57:04,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e32165df/6406b8b361e946f18a5d6c826caaa374/FLAG6cf9d955d [2022-02-23 10:57:04,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e32165df/6406b8b361e946f18a5d6c826caaa374 [2022-02-23 10:57:04,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 10:57:04,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-23 10:57:04,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 10:57:04,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 10:57:04,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 10:57:04,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78453599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04, skipping insertion in model container [2022-02-23 10:57:04,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 10:57:04,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 10:57:04,591 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1066,1079] [2022-02-23 10:57:04,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1266,1279] [2022-02-23 10:57:04,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1613,1626] [2022-02-23 10:57:04,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1813,1826] [2022-02-23 10:57:04,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2024,2037] [2022-02-23 10:57:04,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2224,2237] [2022-02-23 10:57:04,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2629,2642] [2022-02-23 10:57:04,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2829,2842] [2022-02-23 10:57:04,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3040,3053] [2022-02-23 10:57:04,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3243,3256] [2022-02-23 10:57:04,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3583,3596] [2022-02-23 10:57:04,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3786,3799] [2022-02-23 10:57:04,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4000,4013] [2022-02-23 10:57:04,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4203,4216] [2022-02-23 10:57:04,611 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4547,4560] [2022-02-23 10:57:04,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4750,4763] [2022-02-23 10:57:04,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 10:57:04,626 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 10:57:04,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1066,1079] [2022-02-23 10:57:04,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1266,1279] [2022-02-23 10:57:04,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1613,1626] [2022-02-23 10:57:04,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1813,1826] [2022-02-23 10:57:04,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2024,2037] [2022-02-23 10:57:04,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2224,2237] [2022-02-23 10:57:04,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2629,2642] [2022-02-23 10:57:04,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2829,2842] [2022-02-23 10:57:04,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3040,3053] [2022-02-23 10:57:04,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3243,3256] [2022-02-23 10:57:04,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3583,3596] [2022-02-23 10:57:04,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3786,3799] [2022-02-23 10:57:04,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4000,4013] [2022-02-23 10:57:04,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4203,4216] [2022-02-23 10:57:04,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4547,4560] [2022-02-23 10:57:04,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4750,4763] [2022-02-23 10:57:04,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 10:57:04,661 INFO L208 MainTranslator]: Completed translation [2022-02-23 10:57:04,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04 WrapperNode [2022-02-23 10:57:04,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 10:57:04,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 10:57:04,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 10:57:04,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 10:57:04,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 10:57:04,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 10:57:04,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 10:57:04,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 10:57:04,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (1/1) ... [2022-02-23 10:57:04,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 10:57:04,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 10:57:04,753 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) [2022-02-23 10:57:04,761 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 [2022-02-23 10:57:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 10:57:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 10:57:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 10:57:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 10:57:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 10:57:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 10:57:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 10:57:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 10:57:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 10:57:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 10:57:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 10:57:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 10:57:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 10:57:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 10:57:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 10:57:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 10:57:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 10:57:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 10:57:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 10:57:04,866 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 10:57:04,867 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 10:57:05,035 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 10:57:05,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 10:57:05,040 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-23 10:57:05,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:05 BoogieIcfgContainer [2022-02-23 10:57:05,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 10:57:05,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 10:57:05,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 10:57:05,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 10:57:05,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:57:04" (1/3) ... [2022-02-23 10:57:05,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e75db99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:05, skipping insertion in model container [2022-02-23 10:57:05,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:04" (2/3) ... [2022-02-23 10:57:05,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e75db99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:05, skipping insertion in model container [2022-02-23 10:57:05,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:05" (3/3) ... [2022-02-23 10:57:05,046 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.c [2022-02-23 10:57:05,050 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 10:57:05,050 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-02-23 10:57:05,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 10:57:05,083 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 10:57:05,083 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-02-23 10:57:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 60 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 10:57:05,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-23 10:57:05,096 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:05,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:05,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:05,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash -189701311, now seen corresponding path program 1 times [2022-02-23 10:57:05,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:05,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47242775] [2022-02-23 10:57:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:05,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:05,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:05,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:05,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47242775] [2022-02-23 10:57:05,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47242775] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:05,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:05,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 10:57:05,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084597219] [2022-02-23 10:57:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:05,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 10:57:05,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 10:57:05,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 10:57:05,323 INFO L87 Difference]: Start difference. First operand has 65 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 60 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:05,418 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2022-02-23 10:57:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 10:57:05,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-23 10:57:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:05,426 INFO L225 Difference]: With dead ends: 90 [2022-02-23 10:57:05,427 INFO L226 Difference]: Without dead ends: 76 [2022-02-23 10:57:05,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-23 10:57:05,432 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 117 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:05,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 100 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 10:57:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-23 10:57:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2022-02-23 10:57:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-02-23 10:57:05,465 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 13 [2022-02-23 10:57:05,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:05,465 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-02-23 10:57:05,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-02-23 10:57:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-23 10:57:05,466 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:05,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:05,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 10:57:05,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:05,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1582601500, now seen corresponding path program 1 times [2022-02-23 10:57:05,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:05,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047129419] [2022-02-23 10:57:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:05,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:05,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:05,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:05,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047129419] [2022-02-23 10:57:05,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047129419] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:05,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:05,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 10:57:05,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589968664] [2022-02-23 10:57:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:05,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 10:57:05,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 10:57:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 10:57:05,549 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:05,698 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2022-02-23 10:57:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 10:57:05,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-02-23 10:57:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:05,700 INFO L225 Difference]: With dead ends: 153 [2022-02-23 10:57:05,700 INFO L226 Difference]: Without dead ends: 101 [2022-02-23 10:57:05,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-23 10:57:05,702 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 137 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:05,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 99 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:05,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-23 10:57:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 58. [2022-02-23 10:57:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 54 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-02-23 10:57:05,720 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 14 [2022-02-23 10:57:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:05,721 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-02-23 10:57:05,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-02-23 10:57:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-23 10:57:05,721 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:05,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:05,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 10:57:05,722 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1585770269, now seen corresponding path program 1 times [2022-02-23 10:57:05,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:05,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324790503] [2022-02-23 10:57:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:05,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:05,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:05,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324790503] [2022-02-23 10:57:05,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324790503] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:05,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:05,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 10:57:05,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788611511] [2022-02-23 10:57:05,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:05,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 10:57:05,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 10:57:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 10:57:05,778 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:05,850 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2022-02-23 10:57:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 10:57:05,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-02-23 10:57:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:05,852 INFO L225 Difference]: With dead ends: 75 [2022-02-23 10:57:05,852 INFO L226 Difference]: Without dead ends: 73 [2022-02-23 10:57:05,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-23 10:57:05,852 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 144 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:05,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 66 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 10:57:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-23 10:57:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2022-02-23 10:57:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.425) internal successors, (57), 52 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-02-23 10:57:05,876 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 14 [2022-02-23 10:57:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:05,876 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-02-23 10:57:05,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-02-23 10:57:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-23 10:57:05,877 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:05,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:05,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-23 10:57:05,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1816003151, now seen corresponding path program 1 times [2022-02-23 10:57:05,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:05,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66569845] [2022-02-23 10:57:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:05,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:05,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:05,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66569845] [2022-02-23 10:57:05,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66569845] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:05,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:05,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 10:57:05,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115055900] [2022-02-23 10:57:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:05,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 10:57:05,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 10:57:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 10:57:05,942 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:06,051 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2022-02-23 10:57:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 10:57:06,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-23 10:57:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:06,053 INFO L225 Difference]: With dead ends: 96 [2022-02-23 10:57:06,053 INFO L226 Difference]: Without dead ends: 94 [2022-02-23 10:57:06,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-23 10:57:06,056 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 139 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:06,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 84 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-23 10:57:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2022-02-23 10:57:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 50 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-02-23 10:57:06,065 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 15 [2022-02-23 10:57:06,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:06,065 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-02-23 10:57:06,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-02-23 10:57:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-23 10:57:06,066 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:06,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:06,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-23 10:57:06,066 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash -461519734, now seen corresponding path program 1 times [2022-02-23 10:57:06,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:06,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784895703] [2022-02-23 10:57:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:06,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:06,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:06,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784895703] [2022-02-23 10:57:06,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784895703] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:06,131 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:06,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 10:57:06,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491545006] [2022-02-23 10:57:06,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:06,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 10:57:06,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 10:57:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 10:57:06,133 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:06,321 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2022-02-23 10:57:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 10:57:06,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-02-23 10:57:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:06,324 INFO L225 Difference]: With dead ends: 95 [2022-02-23 10:57:06,324 INFO L226 Difference]: Without dead ends: 93 [2022-02-23 10:57:06,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-23 10:57:06,326 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 159 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:06,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 97 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-23 10:57:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 52. [2022-02-23 10:57:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.394736842105263) internal successors, (53), 48 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-02-23 10:57:06,344 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 16 [2022-02-23 10:57:06,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:06,345 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-02-23 10:57:06,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-02-23 10:57:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-23 10:57:06,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:06,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:06,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-23 10:57:06,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 788286019, now seen corresponding path program 1 times [2022-02-23 10:57:06,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:06,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455835796] [2022-02-23 10:57:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:06,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:06,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455835796] [2022-02-23 10:57:06,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455835796] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:06,413 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:06,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 10:57:06,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808065669] [2022-02-23 10:57:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:06,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 10:57:06,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 10:57:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 10:57:06,416 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:06,502 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2022-02-23 10:57:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 10:57:06,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-02-23 10:57:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:06,503 INFO L225 Difference]: With dead ends: 69 [2022-02-23 10:57:06,503 INFO L226 Difference]: Without dead ends: 67 [2022-02-23 10:57:06,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-23 10:57:06,505 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 109 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:06,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 66 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-23 10:57:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2022-02-23 10:57:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 46 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-02-23 10:57:06,510 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 16 [2022-02-23 10:57:06,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:06,511 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-02-23 10:57:06,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-02-23 10:57:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 10:57:06,511 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:06,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:06,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-23 10:57:06,512 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:06,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1422206761, now seen corresponding path program 1 times [2022-02-23 10:57:06,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:06,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408611053] [2022-02-23 10:57:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:06,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:06,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:06,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408611053] [2022-02-23 10:57:06,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408611053] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:06,544 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:06,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 10:57:06,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394552057] [2022-02-23 10:57:06,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:06,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 10:57:06,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 10:57:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 10:57:06,545 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:06,620 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2022-02-23 10:57:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 10:57:06,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-02-23 10:57:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:06,621 INFO L225 Difference]: With dead ends: 91 [2022-02-23 10:57:06,622 INFO L226 Difference]: Without dead ends: 89 [2022-02-23 10:57:06,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-23 10:57:06,623 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 116 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:06,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 81 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:06,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-23 10:57:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 48. [2022-02-23 10:57:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 44 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-02-23 10:57:06,627 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 17 [2022-02-23 10:57:06,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:06,628 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-02-23 10:57:06,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-02-23 10:57:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 10:57:06,628 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:06,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:06,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-23 10:57:06,629 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1332934067, now seen corresponding path program 1 times [2022-02-23 10:57:06,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:06,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503647403] [2022-02-23 10:57:06,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:06,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:06,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:06,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503647403] [2022-02-23 10:57:06,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503647403] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:06,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:06,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 10:57:06,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967224430] [2022-02-23 10:57:06,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:06,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 10:57:06,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 10:57:06,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 10:57:06,683 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:06,784 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-02-23 10:57:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 10:57:06,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-02-23 10:57:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:06,785 INFO L225 Difference]: With dead ends: 73 [2022-02-23 10:57:06,785 INFO L226 Difference]: Without dead ends: 71 [2022-02-23 10:57:06,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-23 10:57:06,786 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 153 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:06,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 59 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 10:57:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-23 10:57:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2022-02-23 10:57:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 42 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-02-23 10:57:06,792 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 17 [2022-02-23 10:57:06,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:06,793 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-02-23 10:57:06,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-02-23 10:57:06,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 10:57:06,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:06,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:06,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-23 10:57:06,794 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:06,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1628720009, now seen corresponding path program 1 times [2022-02-23 10:57:06,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:06,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565147742] [2022-02-23 10:57:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:06,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:06,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:06,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565147742] [2022-02-23 10:57:06,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565147742] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:06,843 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:06,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 10:57:06,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959885599] [2022-02-23 10:57:06,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:06,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 10:57:06,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 10:57:06,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 10:57:06,844 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:06,926 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-02-23 10:57:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 10:57:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-02-23 10:57:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:06,927 INFO L225 Difference]: With dead ends: 61 [2022-02-23 10:57:06,927 INFO L226 Difference]: Without dead ends: 59 [2022-02-23 10:57:06,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-23 10:57:06,928 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 123 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:06,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 66 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 10:57:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-23 10:57:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2022-02-23 10:57:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-02-23 10:57:06,931 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 18 [2022-02-23 10:57:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:06,931 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-02-23 10:57:06,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-02-23 10:57:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-23 10:57:06,932 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:06,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:06,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-23 10:57:06,932 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1049284141, now seen corresponding path program 1 times [2022-02-23 10:57:06,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:06,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753145029] [2022-02-23 10:57:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:06,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:06,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:06,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753145029] [2022-02-23 10:57:06,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753145029] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:06,981 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:06,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 10:57:06,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620400089] [2022-02-23 10:57:06,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:06,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 10:57:06,982 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 10:57:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 10:57:06,982 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:07,029 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-02-23 10:57:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 10:57:07,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-02-23 10:57:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:07,033 INFO L225 Difference]: With dead ends: 61 [2022-02-23 10:57:07,035 INFO L226 Difference]: Without dead ends: 59 [2022-02-23 10:57:07,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-23 10:57:07,036 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 94 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:07,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 57 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 10:57:07,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-23 10:57:07,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2022-02-23 10:57:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.303030303030303) internal successors, (43), 38 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-02-23 10:57:07,041 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 19 [2022-02-23 10:57:07,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:07,041 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-02-23 10:57:07,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-02-23 10:57:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-23 10:57:07,044 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:07,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:07,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-23 10:57:07,045 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1831933135, now seen corresponding path program 1 times [2022-02-23 10:57:07,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:07,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799180042] [2022-02-23 10:57:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:07,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:07,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:07,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799180042] [2022-02-23 10:57:07,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799180042] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:07,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:07,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 10:57:07,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934130417] [2022-02-23 10:57:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:07,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 10:57:07,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 10:57:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 10:57:07,093 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:07,169 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2022-02-23 10:57:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 10:57:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-02-23 10:57:07,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:07,170 INFO L225 Difference]: With dead ends: 69 [2022-02-23 10:57:07,170 INFO L226 Difference]: Without dead ends: 67 [2022-02-23 10:57:07,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-23 10:57:07,171 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 77 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:07,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 70 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 10:57:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-23 10:57:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 40. [2022-02-23 10:57:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-02-23 10:57:07,176 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2022-02-23 10:57:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:07,176 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-02-23 10:57:07,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-02-23 10:57:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-23 10:57:07,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:07,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:07,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-23 10:57:07,178 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash 955355481, now seen corresponding path program 1 times [2022-02-23 10:57:07,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:07,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296435691] [2022-02-23 10:57:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:07,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:07,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:07,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296435691] [2022-02-23 10:57:07,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296435691] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:07,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:07,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 10:57:07,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350732240] [2022-02-23 10:57:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:07,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 10:57:07,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 10:57:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 10:57:07,245 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:07,346 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-02-23 10:57:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 10:57:07,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-23 10:57:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:07,347 INFO L225 Difference]: With dead ends: 74 [2022-02-23 10:57:07,347 INFO L226 Difference]: Without dead ends: 72 [2022-02-23 10:57:07,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-23 10:57:07,347 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 118 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:07,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 59 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-23 10:57:07,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 38. [2022-02-23 10:57:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 34 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-02-23 10:57:07,351 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 21 [2022-02-23 10:57:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:07,351 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-02-23 10:57:07,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-02-23 10:57:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-23 10:57:07,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:07,351 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] [2022-02-23 10:57:07,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-23 10:57:07,352 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -448748011, now seen corresponding path program 1 times [2022-02-23 10:57:07,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:07,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312401581] [2022-02-23 10:57:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:07,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:07,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312401581] [2022-02-23 10:57:07,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312401581] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:07,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:07,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 10:57:07,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432194563] [2022-02-23 10:57:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:07,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 10:57:07,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:07,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 10:57:07,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-23 10:57:07,397 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:07,515 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2022-02-23 10:57:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 10:57:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-23 10:57:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:07,515 INFO L225 Difference]: With dead ends: 62 [2022-02-23 10:57:07,516 INFO L226 Difference]: Without dead ends: 60 [2022-02-23 10:57:07,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-02-23 10:57:07,516 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 108 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:07,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 68 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:07,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-02-23 10:57:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 36. [2022-02-23 10:57:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-02-23 10:57:07,519 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2022-02-23 10:57:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:07,520 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-02-23 10:57:07,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-02-23 10:57:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 10:57:07,520 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:07,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:07,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-23 10:57:07,520 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1026283297, now seen corresponding path program 1 times [2022-02-23 10:57:07,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:07,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178173003] [2022-02-23 10:57:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:07,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:07,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178173003] [2022-02-23 10:57:07,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178173003] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:07,561 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:07,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 10:57:07,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888350594] [2022-02-23 10:57:07,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:07,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 10:57:07,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 10:57:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 10:57:07,562 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:07,691 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2022-02-23 10:57:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 10:57:07,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-23 10:57:07,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:07,692 INFO L225 Difference]: With dead ends: 87 [2022-02-23 10:57:07,692 INFO L226 Difference]: Without dead ends: 85 [2022-02-23 10:57:07,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-23 10:57:07,693 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 116 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:07,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 77 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-23 10:57:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 34. [2022-02-23 10:57:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-02-23 10:57:07,697 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2022-02-23 10:57:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:07,697 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-02-23 10:57:07,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-02-23 10:57:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-23 10:57:07,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:07,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:07,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-23 10:57:07,697 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:07,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1750007973, now seen corresponding path program 1 times [2022-02-23 10:57:07,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:07,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727213184] [2022-02-23 10:57:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:07,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:07,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:07,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727213184] [2022-02-23 10:57:07,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727213184] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:07,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:07,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 10:57:07,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258953709] [2022-02-23 10:57:07,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:07,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 10:57:07,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 10:57:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-23 10:57:07,733 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:07,839 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-02-23 10:57:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 10:57:07,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-02-23 10:57:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:07,840 INFO L225 Difference]: With dead ends: 60 [2022-02-23 10:57:07,840 INFO L226 Difference]: Without dead ends: 58 [2022-02-23 10:57:07,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-02-23 10:57:07,841 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 99 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:07,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 58 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:07,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-02-23 10:57:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 32. [2022-02-23 10:57:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-02-23 10:57:07,844 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2022-02-23 10:57:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:07,844 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-02-23 10:57:07,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-02-23 10:57:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-23 10:57:07,845 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 10:57:07,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 10:57:07,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-23 10:57:07,845 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2022-02-23 10:57:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 10:57:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1584330853, now seen corresponding path program 1 times [2022-02-23 10:57:07,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 10:57:07,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81305287] [2022-02-23 10:57:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 10:57:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 10:57:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 10:57:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 10:57:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 10:57:07,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 10:57:07,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81305287] [2022-02-23 10:57:07,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81305287] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 10:57:07,886 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 10:57:07,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 10:57:07,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199372819] [2022-02-23 10:57:07,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 10:57:07,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 10:57:07,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 10:57:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 10:57:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-23 10:57:07,887 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 10:57:08,084 INFO L93 Difference]: Finished difference Result 125 states and 147 transitions. [2022-02-23 10:57:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 10:57:08,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-23 10:57:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 10:57:08,085 INFO L225 Difference]: With dead ends: 125 [2022-02-23 10:57:08,085 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 10:57:08,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-02-23 10:57:08,086 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 145 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 10:57:08,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 86 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 10:57:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 10:57:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 10:57:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-23 10:57:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 10:57:08,086 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-02-23 10:57:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 10:57:08,087 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 10:57:08,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 10:57:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 10:57:08,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (15 of 16 remaining) [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (14 of 16 remaining) [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (13 of 16 remaining) [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (12 of 16 remaining) [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4ASSERT_VIOLATIONERROR_FUNCTION (11 of 16 remaining) [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5ASSERT_VIOLATIONERROR_FUNCTION (10 of 16 remaining) [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ASSERT_VIOLATIONERROR_FUNCTION (9 of 16 remaining) [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7ASSERT_VIOLATIONERROR_FUNCTION (8 of 16 remaining) [2022-02-23 10:57:08,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONERROR_FUNCTION (7 of 16 remaining) [2022-02-23 10:57:08,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9ASSERT_VIOLATIONERROR_FUNCTION (6 of 16 remaining) [2022-02-23 10:57:08,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr10ASSERT_VIOLATIONERROR_FUNCTION (5 of 16 remaining) [2022-02-23 10:57:08,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr11ASSERT_VIOLATIONERROR_FUNCTION (4 of 16 remaining) [2022-02-23 10:57:08,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONERROR_FUNCTION (3 of 16 remaining) [2022-02-23 10:57:08,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONERROR_FUNCTION (2 of 16 remaining) [2022-02-23 10:57:08,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr14ASSERT_VIOLATIONERROR_FUNCTION (1 of 16 remaining) [2022-02-23 10:57:08,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr15ASSERT_VIOLATIONERROR_FUNCTION (0 of 16 remaining) [2022-02-23 10:57:08,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-23 10:57:08,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 10:57:55,883 WARN L232 SmtUtils]: Spent 47.79s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-23 11:00:32,131 WARN L232 SmtUtils]: Spent 2.60m on a formula simplification that was a NOOP. DAG size: 144 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)