/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:14:13,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:14:13,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:14:13,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:14:13,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:14:13,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:14:13,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:14:13,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:14:13,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:14:13,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:14:13,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:14:13,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:14:13,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:14:13,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:14:13,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:14:13,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:14:13,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:14:13,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:14:13,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:14:13,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:14:13,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:14:13,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:14:13,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:14:13,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:14:13,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:14:13,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:14:13,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:14:13,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:14:13,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:14:13,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:14:13,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:14:13,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:14:13,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:14:13,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:14:13,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:14:13,574 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:14:13,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:14:13,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:14:13,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:14:13,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:14:13,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:14:13,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:14:13,575 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:14:13,576 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:14:13,576 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:14:13,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:14:13,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:14:13,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:14:13,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:14:13,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:14:13,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:14:13,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:14:13,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:14:13,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:14:13,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:14:13,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:14:13,579 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:14:13,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:14:13,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:14:13,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:14:13,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:14:13,580 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:14:13,580 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:14:13,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:14:13,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:14:13,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:14:13,807 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:14:13,807 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:14:13,808 INFO L432 ainManager$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 [2022-01-10 20:14:13,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31ae8215/ecd924084a2c47c49ec57038e87e733c/FLAG7863ca428 [2022-01-10 20:14:14,247 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:14:14,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2022-01-10 20:14:14,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31ae8215/ecd924084a2c47c49ec57038e87e733c/FLAG7863ca428 [2022-01-10 20:14:14,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31ae8215/ecd924084a2c47c49ec57038e87e733c [2022-01-10 20:14:14,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:14:14,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:14:14,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:14:14,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:14:14,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:14:14,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d09322f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14, skipping insertion in model container [2022-01-10 20:14:14,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:14:14,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:14:14,834 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] [2022-01-10 20:14:14,843 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] [2022-01-10 20:14:14,846 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] [2022-01-10 20:14:14,854 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] [2022-01-10 20:14:14,857 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] [2022-01-10 20:14:14,860 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] [2022-01-10 20:14:14,862 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] [2022-01-10 20:14:14,863 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] [2022-01-10 20:14:14,864 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] [2022-01-10 20:14:14,865 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] [2022-01-10 20:14:14,867 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] [2022-01-10 20:14:14,868 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] [2022-01-10 20:14:14,869 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] [2022-01-10 20:14:14,870 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] [2022-01-10 20:14:14,877 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] [2022-01-10 20:14:14,883 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] [2022-01-10 20:14:14,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:14:14,904 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:14:14,919 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] [2022-01-10 20:14:14,921 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] [2022-01-10 20:14:14,922 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] [2022-01-10 20:14:14,923 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] [2022-01-10 20:14:14,924 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] [2022-01-10 20:14:14,924 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] [2022-01-10 20:14:14,926 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] [2022-01-10 20:14:14,927 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] [2022-01-10 20:14:14,928 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] [2022-01-10 20:14:14,929 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] [2022-01-10 20:14:14,931 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] [2022-01-10 20:14:14,932 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] [2022-01-10 20:14:14,932 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] [2022-01-10 20:14:14,933 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] [2022-01-10 20:14:14,935 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] [2022-01-10 20:14:14,936 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] [2022-01-10 20:14:14,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:14:14,957 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:14:14,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14 WrapperNode [2022-01-10 20:14:14,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:14:14,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:14:14,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:14:14,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:14:14,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,011 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 189 [2022-01-10 20:14:15,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:14:15,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:14:15,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:14:15,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:14:15,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:14:15,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:14:15,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:14:15,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:14:15,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:15,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:14:15,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:15,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:14:15,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:14:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:14:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:14:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:14:15,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:14:15,227 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:14:15,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:14:15,526 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:14:15,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:14:15,532 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 20:14:15,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:14:15 BoogieIcfgContainer [2022-01-10 20:14:15,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:14:15,534 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:14:15,534 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:14:15,542 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:14:15,545 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:14:15" (1/1) ... [2022-01-10 20:14:15,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:14:15 BasicIcfg [2022-01-10 20:14:15,660 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:14:15,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:14:15,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:14:15,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:14:15,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:14:14" (1/4) ... [2022-01-10 20:14:15,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503098b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:14:15, skipping insertion in model container [2022-01-10 20:14:15,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (2/4) ... [2022-01-10 20:14:15,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503098b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:14:15, skipping insertion in model container [2022-01-10 20:14:15,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:14:15" (3/4) ... [2022-01-10 20:14:15,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503098b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:14:15, skipping insertion in model container [2022-01-10 20:14:15,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:14:15" (4/4) ... [2022-01-10 20:14:15,668 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.cTransformedIcfg [2022-01-10 20:14:15,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:14:15,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-01-10 20:14:15,705 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:14:15,711 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 20:14:15,711 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-01-10 20:14:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 59 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:15,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 20:14:15,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:15,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:15,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1803078397, now seen corresponding path program 1 times [2022-01-10 20:14:15,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:15,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518221824] [2022-01-10 20:14:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:15,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:15,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:15,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518221824] [2022-01-10 20:14:15,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518221824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:15,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:15,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:14:15,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344732863] [2022-01-10 20:14:15,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:15,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:14:15,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:14:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:14:15,931 INFO L87 Difference]: Start difference. First operand has 60 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 59 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:15,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:15,956 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2022-01-10 20:14:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:14:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 20:14:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:15,965 INFO L225 Difference]: With dead ends: 83 [2022-01-10 20:14:15,965 INFO L226 Difference]: Without dead ends: 72 [2022-01-10 20:14:15,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:14:15,970 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 58 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:15,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 110 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:14:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-10 20:14:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2022-01-10 20:14:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.475) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-01-10 20:14:15,998 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 9 [2022-01-10 20:14:15,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:15,998 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-01-10 20:14:15,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-01-10 20:14:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:14:15,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:15,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:15,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:14:15,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:16,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:16,000 INFO L85 PathProgramCache]: Analyzing trace with hash -60854259, now seen corresponding path program 1 times [2022-01-10 20:14:16,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:16,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079046333] [2022-01-10 20:14:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:16,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:16,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:16,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079046333] [2022-01-10 20:14:16,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079046333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:16,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:16,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:16,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475348922] [2022-01-10 20:14:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:16,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:16,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:16,098 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:16,342 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2022-01-10 20:14:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:14:16,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 20:14:16,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:16,346 INFO L225 Difference]: With dead ends: 182 [2022-01-10 20:14:16,346 INFO L226 Difference]: Without dead ends: 180 [2022-01-10 20:14:16,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:16,348 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 198 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:16,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 168 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:14:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-01-10 20:14:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 73. [2022-01-10 20:14:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.5172413793103448) internal successors, (88), 72 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2022-01-10 20:14:16,363 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 10 [2022-01-10 20:14:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:16,363 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2022-01-10 20:14:16,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2022-01-10 20:14:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:14:16,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:16,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:16,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:14:16,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:16,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash -60823441, now seen corresponding path program 1 times [2022-01-10 20:14:16,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:16,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118676565] [2022-01-10 20:14:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:16,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:16,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:16,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118676565] [2022-01-10 20:14:16,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118676565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:16,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:16,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:14:16,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771187963] [2022-01-10 20:14:16,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:16,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:16,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:14:16,427 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:16,513 INFO L93 Difference]: Finished difference Result 188 states and 226 transitions. [2022-01-10 20:14:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:14:16,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 20:14:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:16,517 INFO L225 Difference]: With dead ends: 188 [2022-01-10 20:14:16,517 INFO L226 Difference]: Without dead ends: 118 [2022-01-10 20:14:16,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:16,519 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 80 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:16,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 154 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:16,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-10 20:14:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 73. [2022-01-10 20:14:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 72 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2022-01-10 20:14:16,541 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 10 [2022-01-10 20:14:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:16,542 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2022-01-10 20:14:16,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2022-01-10 20:14:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 20:14:16,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:16,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:16,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:14:16,543 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1885525461, now seen corresponding path program 1 times [2022-01-10 20:14:16,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:16,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409835607] [2022-01-10 20:14:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:16,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:16,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:16,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409835607] [2022-01-10 20:14:16,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409835607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:16,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:16,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:16,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110388481] [2022-01-10 20:14:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:16,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:16,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:16,676 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:16,863 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2022-01-10 20:14:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:14:16,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-10 20:14:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:16,866 INFO L225 Difference]: With dead ends: 167 [2022-01-10 20:14:16,866 INFO L226 Difference]: Without dead ends: 165 [2022-01-10 20:14:16,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:16,868 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 150 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:16,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 233 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-10 20:14:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 77. [2022-01-10 20:14:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 76 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2022-01-10 20:14:16,892 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 11 [2022-01-10 20:14:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:16,894 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2022-01-10 20:14:16,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2022-01-10 20:14:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 20:14:16,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:16,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:16,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:14:16,896 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1648637845, now seen corresponding path program 1 times [2022-01-10 20:14:16,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:16,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728533554] [2022-01-10 20:14:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:16,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:16,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:16,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728533554] [2022-01-10 20:14:16,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728533554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:16,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:16,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:14:16,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266697219] [2022-01-10 20:14:16,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:16,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:16,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:16,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:14:16,979 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:17,078 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2022-01-10 20:14:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:14:17,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 20:14:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:17,081 INFO L225 Difference]: With dead ends: 102 [2022-01-10 20:14:17,081 INFO L226 Difference]: Without dead ends: 100 [2022-01-10 20:14:17,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:17,084 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 78 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:17,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 93 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-10 20:14:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 75. [2022-01-10 20:14:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 74 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2022-01-10 20:14:17,109 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 12 [2022-01-10 20:14:17,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:17,110 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2022-01-10 20:14:17,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2022-01-10 20:14:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 20:14:17,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:17,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:17,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 20:14:17,111 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:17,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:17,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1678254071, now seen corresponding path program 1 times [2022-01-10 20:14:17,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:17,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782132914] [2022-01-10 20:14:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:17,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:17,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782132914] [2022-01-10 20:14:17,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782132914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:17,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:17,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:17,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949003714] [2022-01-10 20:14:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:17,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:17,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:17,262 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:17,418 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2022-01-10 20:14:17,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:14:17,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 20:14:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:17,419 INFO L225 Difference]: With dead ends: 118 [2022-01-10 20:14:17,419 INFO L226 Difference]: Without dead ends: 116 [2022-01-10 20:14:17,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 20:14:17,420 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 116 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:17,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 151 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-10 20:14:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 73. [2022-01-10 20:14:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 72 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2022-01-10 20:14:17,435 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 12 [2022-01-10 20:14:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:17,436 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2022-01-10 20:14:17,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2022-01-10 20:14:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:14:17,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:17,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:17,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 20:14:17,438 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -431833135, now seen corresponding path program 1 times [2022-01-10 20:14:17,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:17,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392743804] [2022-01-10 20:14:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:17,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:17,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:17,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392743804] [2022-01-10 20:14:17,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392743804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:17,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:17,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:17,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7168976] [2022-01-10 20:14:17,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:17,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:17,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:17,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:17,535 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:17,702 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2022-01-10 20:14:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 20:14:17,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 20:14:17,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:17,703 INFO L225 Difference]: With dead ends: 121 [2022-01-10 20:14:17,703 INFO L226 Difference]: Without dead ends: 119 [2022-01-10 20:14:17,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 20:14:17,704 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 96 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:17,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 145 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:17,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-10 20:14:17,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 71. [2022-01-10 20:14:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-01-10 20:14:17,715 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 13 [2022-01-10 20:14:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:17,715 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-01-10 20:14:17,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-01-10 20:14:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:14:17,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:17,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:17,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 20:14:17,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash 486269875, now seen corresponding path program 1 times [2022-01-10 20:14:17,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:17,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842198356] [2022-01-10 20:14:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:17,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:17,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:17,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842198356] [2022-01-10 20:14:17,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842198356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:17,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:17,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:14:17,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496724893] [2022-01-10 20:14:17,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:17,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:17,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:17,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:17,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:14:17,776 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:17,853 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2022-01-10 20:14:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:14:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 20:14:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:17,854 INFO L225 Difference]: With dead ends: 170 [2022-01-10 20:14:17,854 INFO L226 Difference]: Without dead ends: 168 [2022-01-10 20:14:17,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:17,855 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 62 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:17,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 210 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-10 20:14:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 89. [2022-01-10 20:14:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2022-01-10 20:14:17,873 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 13 [2022-01-10 20:14:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:17,873 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2022-01-10 20:14:17,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2022-01-10 20:14:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 20:14:17,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:17,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:17,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 20:14:17,874 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash -501924069, now seen corresponding path program 1 times [2022-01-10 20:14:17,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:17,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374071159] [2022-01-10 20:14:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:17,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:17,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:17,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374071159] [2022-01-10 20:14:17,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374071159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:17,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:17,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:17,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362017669] [2022-01-10 20:14:17,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:17,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:17,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:17,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:17,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:17,977 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:18,091 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2022-01-10 20:14:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:14:18,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 20:14:18,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:18,093 INFO L225 Difference]: With dead ends: 120 [2022-01-10 20:14:18,093 INFO L226 Difference]: Without dead ends: 118 [2022-01-10 20:14:18,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 20:14:18,094 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:18,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 92 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-10 20:14:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 87. [2022-01-10 20:14:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 86 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2022-01-10 20:14:18,107 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 14 [2022-01-10 20:14:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:18,108 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2022-01-10 20:14:18,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2022-01-10 20:14:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 20:14:18,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:18,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:18,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 20:14:18,109 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1620224277, now seen corresponding path program 1 times [2022-01-10 20:14:18,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:18,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708114387] [2022-01-10 20:14:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:18,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:18,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:18,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708114387] [2022-01-10 20:14:18,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708114387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:18,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:18,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:14:18,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57682035] [2022-01-10 20:14:18,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:18,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:18,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:18,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:14:18,151 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:18,241 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2022-01-10 20:14:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:14:18,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 20:14:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:18,242 INFO L225 Difference]: With dead ends: 140 [2022-01-10 20:14:18,242 INFO L226 Difference]: Without dead ends: 138 [2022-01-10 20:14:18,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:18,243 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 58 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:18,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 151 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-10 20:14:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 91. [2022-01-10 20:14:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 90 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-01-10 20:14:18,258 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 15 [2022-01-10 20:14:18,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:18,258 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-01-10 20:14:18,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,258 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-01-10 20:14:18,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 20:14:18,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:18,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:18,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 20:14:18,260 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1312653729, now seen corresponding path program 1 times [2022-01-10 20:14:18,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:18,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803116821] [2022-01-10 20:14:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:18,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:18,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:18,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803116821] [2022-01-10 20:14:18,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803116821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:18,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:18,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:14:18,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229225995] [2022-01-10 20:14:18,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:18,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:18,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:18,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:18,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:14:18,361 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:18,486 INFO L93 Difference]: Finished difference Result 169 states and 199 transitions. [2022-01-10 20:14:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:14:18,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 20:14:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:18,487 INFO L225 Difference]: With dead ends: 169 [2022-01-10 20:14:18,487 INFO L226 Difference]: Without dead ends: 167 [2022-01-10 20:14:18,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:18,488 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 60 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:18,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 133 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-10 20:14:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 89. [2022-01-10 20:14:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 80 states have (on average 1.35) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2022-01-10 20:14:18,500 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 16 [2022-01-10 20:14:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:18,501 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2022-01-10 20:14:18,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,501 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2022-01-10 20:14:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 20:14:18,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:18,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:18,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 20:14:18,505 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2037558695, now seen corresponding path program 1 times [2022-01-10 20:14:18,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:18,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415355910] [2022-01-10 20:14:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:18,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:18,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:18,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415355910] [2022-01-10 20:14:18,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415355910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:18,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:18,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:18,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108039858] [2022-01-10 20:14:18,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:18,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:18,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:18,584 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:18,706 INFO L93 Difference]: Finished difference Result 159 states and 187 transitions. [2022-01-10 20:14:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:14:18,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 20:14:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:18,707 INFO L225 Difference]: With dead ends: 159 [2022-01-10 20:14:18,708 INFO L226 Difference]: Without dead ends: 157 [2022-01-10 20:14:18,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:14:18,708 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 82 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:18,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 173 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-01-10 20:14:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 95. [2022-01-10 20:14:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 94 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2022-01-10 20:14:18,721 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 17 [2022-01-10 20:14:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:18,722 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2022-01-10 20:14:18,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2022-01-10 20:14:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 20:14:18,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:18,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:18,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 20:14:18,723 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1260191139, now seen corresponding path program 1 times [2022-01-10 20:14:18,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:18,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718178987] [2022-01-10 20:14:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:18,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:19,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:19,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718178987] [2022-01-10 20:14:19,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718178987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:19,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:19,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 20:14:19,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201068665] [2022-01-10 20:14:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:19,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 20:14:19,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 20:14:19,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:14:19,010 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:20,249 INFO L93 Difference]: Finished difference Result 164 states and 188 transitions. [2022-01-10 20:14:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 20:14:20,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 20:14:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:20,251 INFO L225 Difference]: With dead ends: 164 [2022-01-10 20:14:20,251 INFO L226 Difference]: Without dead ends: 162 [2022-01-10 20:14:20,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-01-10 20:14:20,252 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 158 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:20,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 354 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 20:14:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-10 20:14:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 98. [2022-01-10 20:14:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 97 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2022-01-10 20:14:20,264 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 18 [2022-01-10 20:14:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:20,264 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2022-01-10 20:14:20,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2022-01-10 20:14:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 20:14:20,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:20,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:20,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 20:14:20,268 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash 411220893, now seen corresponding path program 1 times [2022-01-10 20:14:20,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:20,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051855878] [2022-01-10 20:14:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:20,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:20,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:20,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051855878] [2022-01-10 20:14:20,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051855878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:20,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:20,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:20,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543667426] [2022-01-10 20:14:20,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:20,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:20,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:20,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:20,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:20,346 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:20,498 INFO L93 Difference]: Finished difference Result 214 states and 246 transitions. [2022-01-10 20:14:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:14:20,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 20:14:20,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:20,500 INFO L225 Difference]: With dead ends: 214 [2022-01-10 20:14:20,500 INFO L226 Difference]: Without dead ends: 212 [2022-01-10 20:14:20,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:20,501 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 83 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:20,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 314 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-10 20:14:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 99. [2022-01-10 20:14:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 98 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2022-01-10 20:14:20,513 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 19 [2022-01-10 20:14:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:20,514 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2022-01-10 20:14:20,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2022-01-10 20:14:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 20:14:20,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:20,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:20,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 20:14:20,515 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash -137052953, now seen corresponding path program 1 times [2022-01-10 20:14:20,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:20,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664192924] [2022-01-10 20:14:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:20,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:20,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:20,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664192924] [2022-01-10 20:14:20,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664192924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:20,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:20,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 20:14:20,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217728798] [2022-01-10 20:14:20,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:20,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 20:14:20,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:20,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 20:14:20,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:14:20,735 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:21,915 INFO L93 Difference]: Finished difference Result 219 states and 251 transitions. [2022-01-10 20:14:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 20:14:21,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-10 20:14:21,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:21,917 INFO L225 Difference]: With dead ends: 219 [2022-01-10 20:14:21,917 INFO L226 Difference]: Without dead ends: 217 [2022-01-10 20:14:21,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2022-01-10 20:14:21,918 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 207 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:21,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 600 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 20:14:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-10 20:14:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 100. [2022-01-10 20:14:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 99 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2022-01-10 20:14:21,930 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 20 [2022-01-10 20:14:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:21,931 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2022-01-10 20:14:21,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2022-01-10 20:14:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 20:14:21,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:21,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:21,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 20:14:21,932 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash 46327009, now seen corresponding path program 1 times [2022-01-10 20:14:21,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:21,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588072906] [2022-01-10 20:14:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:21,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:21,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:21,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588072906] [2022-01-10 20:14:21,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588072906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:21,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:21,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:14:21,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253590207] [2022-01-10 20:14:21,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:21,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:14:21,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:14:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:14:21,999 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:22,383 INFO L93 Difference]: Finished difference Result 292 states and 332 transitions. [2022-01-10 20:14:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 20:14:22,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-10 20:14:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:22,385 INFO L225 Difference]: With dead ends: 292 [2022-01-10 20:14:22,385 INFO L226 Difference]: Without dead ends: 290 [2022-01-10 20:14:22,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:14:22,386 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 117 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:22,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 588 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 20:14:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-01-10 20:14:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 101. [2022-01-10 20:14:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 92 states have (on average 1.315217391304348) internal successors, (121), 100 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2022-01-10 20:14:22,398 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 21 [2022-01-10 20:14:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:22,398 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2022-01-10 20:14:22,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2022-01-10 20:14:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 20:14:22,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:22,400 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:22,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 20:14:22,400 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:22,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1138353826, now seen corresponding path program 1 times [2022-01-10 20:14:22,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:22,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638764689] [2022-01-10 20:14:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:22,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:22,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:22,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638764689] [2022-01-10 20:14:22,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638764689] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:22,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245235238] [2022-01-10 20:14:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:22,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:22,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:22,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:22,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:14:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:22,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 20:14:22,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:22,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:14:22,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245235238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:22,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 20:14:22,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-01-10 20:14:22,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229608918] [2022-01-10 20:14:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:22,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:22,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:22,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:22,974 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:23,101 INFO L93 Difference]: Finished difference Result 209 states and 248 transitions. [2022-01-10 20:14:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:14:23,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-10 20:14:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:23,102 INFO L225 Difference]: With dead ends: 209 [2022-01-10 20:14:23,102 INFO L226 Difference]: Without dead ends: 116 [2022-01-10 20:14:23,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:23,103 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:23,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-10 20:14:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2022-01-10 20:14:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 103 states have (on average 1.2524271844660195) internal successors, (129), 111 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2022-01-10 20:14:23,121 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 21 [2022-01-10 20:14:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:23,121 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2022-01-10 20:14:23,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2022-01-10 20:14:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 20:14:23,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:23,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:23,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:14:23,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-10 20:14:23,340 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1921247541, now seen corresponding path program 1 times [2022-01-10 20:14:23,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:23,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064953177] [2022-01-10 20:14:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:23,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:23,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:23,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064953177] [2022-01-10 20:14:23,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064953177] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:23,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779729277] [2022-01-10 20:14:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:23,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:23,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:23,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:23,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 20:14:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:23,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 20:14:23,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:23,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:14:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:24,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779729277] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:14:24,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:14:24,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 14 [2022-01-10 20:14:24,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161876664] [2022-01-10 20:14:24,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:14:24,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 20:14:24,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 20:14:24,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-01-10 20:14:24,097 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:25,300 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2022-01-10 20:14:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 20:14:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-10 20:14:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:25,302 INFO L225 Difference]: With dead ends: 313 [2022-01-10 20:14:25,302 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 20:14:25,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2022-01-10 20:14:25,303 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 565 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:25,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 399 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 20:14:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 20:14:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 142. [2022-01-10 20:14:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 133 states have (on average 1.300751879699248) internal successors, (173), 141 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 173 transitions. [2022-01-10 20:14:25,327 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 173 transitions. Word has length 24 [2022-01-10 20:14:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:25,327 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 173 transitions. [2022-01-10 20:14:25,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 173 transitions. [2022-01-10 20:14:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 20:14:25,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:25,328 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:25,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 20:14:25,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-10 20:14:25,544 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:25,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1311607251, now seen corresponding path program 1 times [2022-01-10 20:14:25,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:25,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608421446] [2022-01-10 20:14:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:25,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:25,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:25,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608421446] [2022-01-10 20:14:25,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608421446] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:25,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380208174] [2022-01-10 20:14:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:25,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:25,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:25,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:25,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 20:14:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:25,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 20:14:25,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:26,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:14:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:26,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380208174] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:14:26,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:14:26,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 14 [2022-01-10 20:14:26,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113768608] [2022-01-10 20:14:26,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:14:26,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 20:14:26,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 20:14:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-01-10 20:14:26,264 INFO L87 Difference]: Start difference. First operand 142 states and 173 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:27,423 INFO L93 Difference]: Finished difference Result 345 states and 382 transitions. [2022-01-10 20:14:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 20:14:27,424 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 20:14:27,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:27,425 INFO L225 Difference]: With dead ends: 345 [2022-01-10 20:14:27,425 INFO L226 Difference]: Without dead ends: 343 [2022-01-10 20:14:27,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2022-01-10 20:14:27,426 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 310 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:27,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 445 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 20:14:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-01-10 20:14:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 146. [2022-01-10 20:14:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 137 states have (on average 1.2919708029197081) internal successors, (177), 145 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2022-01-10 20:14:27,467 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 26 [2022-01-10 20:14:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:27,468 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2022-01-10 20:14:27,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2022-01-10 20:14:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 20:14:27,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:27,469 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:27,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 20:14:27,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:27,696 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:27,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1133429966, now seen corresponding path program 1 times [2022-01-10 20:14:27,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499627648] [2022-01-10 20:14:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:27,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:27,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499627648] [2022-01-10 20:14:27,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499627648] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576317834] [2022-01-10 20:14:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:27,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:27,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:27,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:27,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 20:14:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:27,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 20:14:27,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:28,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:14:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:29,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576317834] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:14:29,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:14:29,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 17 [2022-01-10 20:14:29,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224069322] [2022-01-10 20:14:29,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:14:29,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 20:14:29,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 20:14:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2022-01-10 20:14:29,046 INFO L87 Difference]: Start difference. First operand 146 states and 177 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:31,585 INFO L93 Difference]: Finished difference Result 452 states and 544 transitions. [2022-01-10 20:14:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 20:14:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 20:14:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:31,587 INFO L225 Difference]: With dead ends: 452 [2022-01-10 20:14:31,587 INFO L226 Difference]: Without dead ends: 450 [2022-01-10 20:14:31,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2022-01-10 20:14:31,588 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 382 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:31,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 437 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 509 Invalid, 0 Unknown, 29 Unchecked, 1.7s Time] [2022-01-10 20:14:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-10 20:14:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 207. [2022-01-10 20:14:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 198 states have (on average 1.303030303030303) internal successors, (258), 206 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 258 transitions. [2022-01-10 20:14:31,620 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 258 transitions. Word has length 26 [2022-01-10 20:14:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:31,620 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 258 transitions. [2022-01-10 20:14:31,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 258 transitions. [2022-01-10 20:14:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 20:14:31,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:31,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:31,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 20:14:31,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:31,835 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash -775634010, now seen corresponding path program 1 times [2022-01-10 20:14:31,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:31,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093314276] [2022-01-10 20:14:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:31,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:31,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:31,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093314276] [2022-01-10 20:14:31,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093314276] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:31,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048261126] [2022-01-10 20:14:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:31,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:31,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:31,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:31,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 20:14:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:32,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 20:14:32,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:32,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:14:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:33,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048261126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:14:33,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:14:33,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-01-10 20:14:33,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681600888] [2022-01-10 20:14:33,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:14:33,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 20:14:33,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:33,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 20:14:33,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-01-10 20:14:33,261 INFO L87 Difference]: Start difference. First operand 207 states and 258 transitions. Second operand has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:35,855 INFO L93 Difference]: Finished difference Result 595 states and 708 transitions. [2022-01-10 20:14:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 20:14:35,855 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-10 20:14:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:35,857 INFO L225 Difference]: With dead ends: 595 [2022-01-10 20:14:35,857 INFO L226 Difference]: Without dead ends: 590 [2022-01-10 20:14:35,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 20:14:35,858 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 531 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:35,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 473 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 553 Invalid, 0 Unknown, 192 Unchecked, 1.9s Time] [2022-01-10 20:14:35,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-01-10 20:14:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 258. [2022-01-10 20:14:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 249 states have (on average 1.2811244979919678) internal successors, (319), 257 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 319 transitions. [2022-01-10 20:14:35,906 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 319 transitions. Word has length 27 [2022-01-10 20:14:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:35,906 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 319 transitions. [2022-01-10 20:14:35,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 319 transitions. [2022-01-10 20:14:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 20:14:35,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:35,907 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:35,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 20:14:36,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:36,123 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:36,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2029110927, now seen corresponding path program 1 times [2022-01-10 20:14:36,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:36,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383596399] [2022-01-10 20:14:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:36,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:36,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:36,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383596399] [2022-01-10 20:14:36,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383596399] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:36,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456963220] [2022-01-10 20:14:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:36,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:36,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:36,274 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:36,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 20:14:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:36,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 20:14:36,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:36,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:14:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:36,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456963220] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:14:36,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:14:36,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 16 [2022-01-10 20:14:36,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369331919] [2022-01-10 20:14:36,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:14:36,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 20:14:36,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:36,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 20:14:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-01-10 20:14:36,730 INFO L87 Difference]: Start difference. First operand 258 states and 319 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:37,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:37,832 INFO L93 Difference]: Finished difference Result 481 states and 581 transitions. [2022-01-10 20:14:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 20:14:37,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-10 20:14:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:37,834 INFO L225 Difference]: With dead ends: 481 [2022-01-10 20:14:37,834 INFO L226 Difference]: Without dead ends: 479 [2022-01-10 20:14:37,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2022-01-10 20:14:37,835 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 568 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:37,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 292 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 20:14:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-10 20:14:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 256. [2022-01-10 20:14:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 248 states have (on average 1.2620967741935485) internal successors, (313), 255 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 313 transitions. [2022-01-10 20:14:37,882 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 313 transitions. Word has length 28 [2022-01-10 20:14:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:37,882 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 313 transitions. [2022-01-10 20:14:37,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:14:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 313 transitions. [2022-01-10 20:14:37,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 20:14:37,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:37,883 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:37,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 20:14:38,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:38,104 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1522071947, now seen corresponding path program 1 times [2022-01-10 20:14:38,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:38,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129420065] [2022-01-10 20:14:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:38,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:38,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:38,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129420065] [2022-01-10 20:14:38,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129420065] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:38,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433628301] [2022-01-10 20:14:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:38,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:38,404 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:38,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 20:14:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:38,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 20:14:38,620 INFO L286 TraceCheckSpWp]: Computing forward predicates...