./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-cbmc-regression/float11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float11.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a6a56042e14a7445bc111b9dad948055cf7a2c8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float11.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a6a56042e14a7445bc111b9dad948055cf7a2c8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 14:10:42,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:10:42,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:10:42,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:10:42,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:10:42,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:10:42,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:10:42,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:10:42,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:10:42,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:10:42,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:10:42,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:10:42,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:10:42,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:10:42,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:10:42,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:10:42,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:10:42,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:10:42,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:10:42,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:10:42,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:10:42,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:10:42,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:10:42,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:10:42,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:10:42,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:10:42,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:10:42,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:10:42,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:10:42,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:10:42,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:10:42,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:10:42,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:10:42,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:10:42,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:10:42,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:10:42,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:10:42,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:10:42,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:10:42,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:10:42,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:10:42,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 14:10:42,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:10:42,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:10:42,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:10:42,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:10:42,746 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:10:42,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:10:42,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:10:42,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 14:10:42,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:10:42,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:10:42,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:10:42,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:10:42,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:10:42,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:10:42,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:10:42,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:10:42,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:10:42,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:10:42,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:10:42,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:10:42,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:10:42,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:10:42,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:10:42,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:10:42,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:10:42,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 14:10:42,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 14:10:42,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:10:42,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:10:42,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6a56042e14a7445bc111b9dad948055cf7a2c8 [2020-12-02 14:10:43,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:10:43,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:10:43,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:10:43,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:10:43,433 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:10:43,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float11.c [2020-12-02 14:10:43,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09c66813e/85710a20fb3946b9ae083b7c0a2f210c/FLAGe65df8cbc [2020-12-02 14:10:44,431 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:10:44,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c [2020-12-02 14:10:44,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09c66813e/85710a20fb3946b9ae083b7c0a2f210c/FLAGe65df8cbc [2020-12-02 14:10:44,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09c66813e/85710a20fb3946b9ae083b7c0a2f210c [2020-12-02 14:10:44,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:10:44,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:10:44,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:10:44,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:10:44,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:10:44,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:10:44" (1/1) ... [2020-12-02 14:10:44,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537f4e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:44, skipping insertion in model container [2020-12-02 14:10:44,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:10:44" (1/1) ... [2020-12-02 14:10:44,828 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:10:44,868 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:10:45,154 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[300,313] [2020-12-02 14:10:45,162 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[343,356] [2020-12-02 14:10:45,163 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[388,401] [2020-12-02 14:10:45,167 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[430,443] [2020-12-02 14:10:45,168 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[473,486] [2020-12-02 14:10:45,172 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[518,531] [2020-12-02 14:10:45,174 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[564,577] [2020-12-02 14:10:45,175 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[609,622] [2020-12-02 14:10:45,176 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[652,665] [2020-12-02 14:10:45,177 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[715,728] [2020-12-02 14:10:45,181 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[760,773] [2020-12-02 14:10:45,184 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[807,820] [2020-12-02 14:10:45,190 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[851,864] [2020-12-02 14:10:45,192 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[896,909] [2020-12-02 14:10:45,195 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[943,956] [2020-12-02 14:10:45,197 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[991,1004] [2020-12-02 14:10:45,203 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1038,1051] [2020-12-02 14:10:45,204 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1083,1096] [2020-12-02 14:10:45,205 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1145,1158] [2020-12-02 14:10:45,206 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1188,1201] [2020-12-02 14:10:45,207 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1232,1245] [2020-12-02 14:10:45,207 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1276,1289] [2020-12-02 14:10:45,208 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1314,1327] [2020-12-02 14:10:45,209 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1352,1365] [2020-12-02 14:10:45,214 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1391,1404] [2020-12-02 14:10:45,216 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1430,1443] [2020-12-02 14:10:45,216 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1482,1495] [2020-12-02 14:10:45,217 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1533,1546] [2020-12-02 14:10:45,218 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1583,1596] [2020-12-02 14:10:45,219 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1635,1648] [2020-12-02 14:10:45,221 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:10:45,246 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:10:45,269 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[300,313] [2020-12-02 14:10:45,270 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[343,356] [2020-12-02 14:10:45,271 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[388,401] [2020-12-02 14:10:45,274 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[430,443] [2020-12-02 14:10:45,275 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[473,486] [2020-12-02 14:10:45,275 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[518,531] [2020-12-02 14:10:45,276 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[564,577] [2020-12-02 14:10:45,279 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[609,622] [2020-12-02 14:10:45,281 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[652,665] [2020-12-02 14:10:45,282 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[715,728] [2020-12-02 14:10:45,283 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[760,773] [2020-12-02 14:10:45,284 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[807,820] [2020-12-02 14:10:45,285 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[851,864] [2020-12-02 14:10:45,286 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[896,909] [2020-12-02 14:10:45,286 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[943,956] [2020-12-02 14:10:45,287 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[991,1004] [2020-12-02 14:10:45,288 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1038,1051] [2020-12-02 14:10:45,289 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1083,1096] [2020-12-02 14:10:45,295 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1145,1158] [2020-12-02 14:10:45,296 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1188,1201] [2020-12-02 14:10:45,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1232,1245] [2020-12-02 14:10:45,302 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1276,1289] [2020-12-02 14:10:45,305 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1314,1327] [2020-12-02 14:10:45,305 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1352,1365] [2020-12-02 14:10:45,306 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1391,1404] [2020-12-02 14:10:45,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1430,1443] [2020-12-02 14:10:45,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1482,1495] [2020-12-02 14:10:45,308 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1533,1546] [2020-12-02 14:10:45,309 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1583,1596] [2020-12-02 14:10:45,310 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1635,1648] [2020-12-02 14:10:45,311 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:10:45,344 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:10:45,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45 WrapperNode [2020-12-02 14:10:45,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:10:45,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:10:45,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:10:45,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:10:45,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:10:45,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:10:45,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:10:45,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:10:45,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... [2020-12-02 14:10:45,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:10:45,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:10:45,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:10:45,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:10:45,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:10:45,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:10:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:10:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 14:10:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:10:46,138 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:10:46,139 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-02 14:10:46,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:46 BoogieIcfgContainer [2020-12-02 14:10:46,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:10:46,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:10:46,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:10:46,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:10:46,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:10:44" (1/3) ... [2020-12-02 14:10:46,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34affbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:10:46, skipping insertion in model container [2020-12-02 14:10:46,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:45" (2/3) ... [2020-12-02 14:10:46,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34affbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:10:46, skipping insertion in model container [2020-12-02 14:10:46,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:46" (3/3) ... [2020-12-02 14:10:46,152 INFO L111 eAbstractionObserver]: Analyzing ICFG float11.c [2020-12-02 14:10:46,173 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:10:46,177 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-12-02 14:10:46,193 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-12-02 14:10:46,228 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:10:46,229 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:10:46,229 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:10:46,229 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:10:46,229 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:10:46,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:10:46,230 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:10:46,230 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:10:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-12-02 14:10:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 14:10:46,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:46,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 14:10:46,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:46,304 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-02 14:10:46,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 14:10:46,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586193144] [2020-12-02 14:10:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 14:10:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:10:46,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:10:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:10:46,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:10:46,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 14:10:46,500 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 14:10:46,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 14:10:46,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:10:46 BoogieIcfgContainer [2020-12-02 14:10:46,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:10:46,538 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:10:46,538 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:10:46,539 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:10:46,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:46" (3/4) ... [2020-12-02 14:10:46,543 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 14:10:46,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:10:46,548 INFO L168 Benchmark]: Toolchain (without parser) took 1782.78 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 27.8 MB in the end (delta: -573.0 kB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:46,548 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 50.3 MB. Free memory is still 35.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:10:46,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.37 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 26.8 MB in the end (delta: 230.2 kB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:46,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.04 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 25.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:46,557 INFO L168 Benchmark]: Boogie Preprocessor took 51.90 ms. Allocated memory is still 50.3 MB. Free memory was 25.3 MB in the beginning and 24.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:10:46,562 INFO L168 Benchmark]: RCFGBuilder took 649.61 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 40.4 MB in the end (delta: -16.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:46,563 INFO L168 Benchmark]: TraceAbstraction took 391.81 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 28.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:46,564 INFO L168 Benchmark]: Witness Printer took 5.63 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 27.8 MB in the end (delta: 265.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:10:46,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 50.3 MB. Free memory is still 35.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 572.37 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 26.8 MB in the end (delta: 230.2 kB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.04 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 25.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.90 ms. Allocated memory is still 50.3 MB. Free memory was 25.3 MB in the beginning and 24.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 649.61 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 40.4 MB in the end (delta: -16.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 391.81 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 28.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.63 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 27.8 MB in the end (delta: 265.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 7. Possible FailurePath: [L7] COND TRUE !(1.0<2.5) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-2880296 [2020-12-02 14:10:50,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:10:50,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:10:50,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:10:50,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:10:50,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:10:50,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:10:50,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:10:50,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:10:50,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:10:50,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:10:50,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:10:50,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:10:50,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:10:50,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:10:50,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:10:50,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:10:50,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:10:50,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:10:50,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:10:50,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:10:50,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:10:50,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:10:50,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:10:50,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:10:50,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:10:50,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:10:50,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:10:50,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:10:50,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:10:50,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:10:50,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:10:50,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:10:50,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:10:50,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:10:50,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:10:50,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:10:50,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:10:50,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:10:50,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:10:50,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:10:50,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 14:10:50,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:10:50,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:10:50,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:10:50,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:10:50,910 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:10:50,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:10:50,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:10:50,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:10:50,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:10:50,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:10:50,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:10:50,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:10:50,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 14:10:50,913 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 14:10:50,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:10:50,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:10:50,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:10:50,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:10:50,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:10:50,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:10:50,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:10:50,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:10:50,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:10:50,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:10:50,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:10:50,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:10:50,916 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 14:10:50,916 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 14:10:50,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:10:50,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:10:50,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 14:10:50,917 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6a56042e14a7445bc111b9dad948055cf7a2c8 [2020-12-02 14:10:51,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:10:51,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:10:51,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:10:51,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:10:51,861 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:10:51,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float11.c [2020-12-02 14:10:51,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db86984cf/a21a2fa8b88e4debafa49b29d0cd1d39/FLAG2788a107e [2020-12-02 14:10:52,999 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:10:53,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c [2020-12-02 14:10:53,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db86984cf/a21a2fa8b88e4debafa49b29d0cd1d39/FLAG2788a107e [2020-12-02 14:10:53,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db86984cf/a21a2fa8b88e4debafa49b29d0cd1d39 [2020-12-02 14:10:53,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:10:53,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:10:53,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:10:53,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:10:53,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:10:53,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:10:53" (1/1) ... [2020-12-02 14:10:53,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be5985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:53, skipping insertion in model container [2020-12-02 14:10:53,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:10:53" (1/1) ... [2020-12-02 14:10:53,395 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:10:53,452 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:10:53,739 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[300,313] [2020-12-02 14:10:53,763 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[343,356] [2020-12-02 14:10:53,768 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[388,401] [2020-12-02 14:10:53,772 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[430,443] [2020-12-02 14:10:53,777 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[473,486] [2020-12-02 14:10:53,781 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[518,531] [2020-12-02 14:10:53,785 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[564,577] [2020-12-02 14:10:53,791 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[609,622] [2020-12-02 14:10:53,795 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[652,665] [2020-12-02 14:10:53,800 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[715,728] [2020-12-02 14:10:53,804 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[760,773] [2020-12-02 14:10:53,806 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[807,820] [2020-12-02 14:10:53,812 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[851,864] [2020-12-02 14:10:53,814 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[896,909] [2020-12-02 14:10:53,822 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[943,956] [2020-12-02 14:10:53,827 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[991,1004] [2020-12-02 14:10:53,829 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1038,1051] [2020-12-02 14:10:53,832 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1083,1096] [2020-12-02 14:10:53,837 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1145,1158] [2020-12-02 14:10:53,838 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1188,1201] [2020-12-02 14:10:53,840 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1232,1245] [2020-12-02 14:10:53,841 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1276,1289] [2020-12-02 14:10:53,850 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1314,1327] [2020-12-02 14:10:53,852 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1352,1365] [2020-12-02 14:10:53,854 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1391,1404] [2020-12-02 14:10:53,855 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1430,1443] [2020-12-02 14:10:53,858 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1482,1495] [2020-12-02 14:10:53,860 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1533,1546] [2020-12-02 14:10:53,863 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1583,1596] [2020-12-02 14:10:53,865 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1635,1648] [2020-12-02 14:10:53,873 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:10:53,918 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:10:53,952 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[300,313] [2020-12-02 14:10:53,953 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[343,356] [2020-12-02 14:10:53,954 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[388,401] [2020-12-02 14:10:53,955 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[430,443] [2020-12-02 14:10:53,958 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[473,486] [2020-12-02 14:10:53,959 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[518,531] [2020-12-02 14:10:53,959 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[564,577] [2020-12-02 14:10:53,964 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[609,622] [2020-12-02 14:10:53,965 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[652,665] [2020-12-02 14:10:53,969 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[715,728] [2020-12-02 14:10:53,970 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[760,773] [2020-12-02 14:10:53,979 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[807,820] [2020-12-02 14:10:53,981 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[851,864] [2020-12-02 14:10:53,988 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[896,909] [2020-12-02 14:10:53,989 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[943,956] [2020-12-02 14:10:53,990 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[991,1004] [2020-12-02 14:10:53,996 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1038,1051] [2020-12-02 14:10:54,001 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1083,1096] [2020-12-02 14:10:54,011 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1145,1158] [2020-12-02 14:10:54,014 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1188,1201] [2020-12-02 14:10:54,021 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1232,1245] [2020-12-02 14:10:54,024 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1276,1289] [2020-12-02 14:10:54,027 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1314,1327] [2020-12-02 14:10:54,032 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1352,1365] [2020-12-02 14:10:54,038 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1391,1404] [2020-12-02 14:10:54,041 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1430,1443] [2020-12-02 14:10:54,044 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1482,1495] [2020-12-02 14:10:54,047 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1533,1546] [2020-12-02 14:10:54,051 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1583,1596] [2020-12-02 14:10:54,052 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float11.c[1635,1648] [2020-12-02 14:10:54,060 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:10:54,105 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:10:54,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54 WrapperNode [2020-12-02 14:10:54,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:10:54,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:10:54,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:10:54,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:10:54,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:10:54,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:10:54,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:10:54,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:10:54,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... [2020-12-02 14:10:54,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:10:54,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:10:54,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:10:54,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:10:54,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:10:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 14:10:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 14:10:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:10:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:10:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:10:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-12-02 14:10:56,241 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:10:56,241 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-02 14:10:56,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:56 BoogieIcfgContainer [2020-12-02 14:10:56,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:10:56,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:10:56,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:10:56,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:10:56,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:10:53" (1/3) ... [2020-12-02 14:10:56,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545d5a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:10:56, skipping insertion in model container [2020-12-02 14:10:56,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:54" (2/3) ... [2020-12-02 14:10:56,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545d5a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:10:56, skipping insertion in model container [2020-12-02 14:10:56,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:56" (3/3) ... [2020-12-02 14:10:56,256 INFO L111 eAbstractionObserver]: Analyzing ICFG float11.c [2020-12-02 14:10:56,273 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:10:56,278 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-12-02 14:10:56,291 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-12-02 14:10:56,364 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:10:56,364 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:10:56,365 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:10:56,366 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:10:56,366 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:10:56,366 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:10:56,367 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:10:56,367 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:10:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-12-02 14:10:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 14:10:56,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:56,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 14:10:56,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:56,469 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-02 14:10:56,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:10:56,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791103817] [2020-12-02 14:10:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 14:10:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:10:56,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:10:56,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:10:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:10:56,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:10:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:10:56,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791103817] [2020-12-02 14:10:56,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:10:56,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:10:56,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574656483] [2020-12-02 14:10:56,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:10:56,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:10:57,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:10:57,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:10:57,041 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 4 states. [2020-12-02 14:10:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:10:57,149 INFO L93 Difference]: Finished difference Result 227 states and 284 transitions. [2020-12-02 14:10:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:10:57,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-02 14:10:57,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:10:57,173 INFO L225 Difference]: With dead ends: 227 [2020-12-02 14:10:57,173 INFO L226 Difference]: Without dead ends: 107 [2020-12-02 14:10:57,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:10:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-02 14:10:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-02 14:10:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-02 14:10:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 106 transitions. [2020-12-02 14:10:57,250 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 106 transitions. Word has length 4 [2020-12-02 14:10:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:10:57,251 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 106 transitions. [2020-12-02 14:10:57,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:10:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 106 transitions. [2020-12-02 14:10:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 14:10:57,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:57,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 14:10:57,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 14:10:57,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:57,471 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2020-12-02 14:10:57,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:10:57,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575095092] [2020-12-02 14:10:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-02 14:10:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:10:57,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:10:57,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:10:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:10:57,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:10:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:10:57,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575095092] [2020-12-02 14:10:57,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:10:57,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:10:57,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93595414] [2020-12-02 14:10:57,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:10:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:10:57,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:10:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:10:57,789 INFO L87 Difference]: Start difference. First operand 107 states and 106 transitions. Second operand 4 states. [2020-12-02 14:10:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:10:57,822 INFO L93 Difference]: Finished difference Result 107 states and 106 transitions. [2020-12-02 14:10:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:10:57,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-02 14:10:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:10:57,825 INFO L225 Difference]: With dead ends: 107 [2020-12-02 14:10:57,825 INFO L226 Difference]: Without dead ends: 105 [2020-12-02 14:10:57,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:10:57,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-02 14:10:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-12-02 14:10:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-02 14:10:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 104 transitions. [2020-12-02 14:10:57,846 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 104 transitions. Word has length 6 [2020-12-02 14:10:57,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:10:57,846 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 104 transitions. [2020-12-02 14:10:57,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:10:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 104 transitions. [2020-12-02 14:10:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 14:10:57,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:57,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:10:58,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 14:10:58,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:58,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:58,065 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2020-12-02 14:10:58,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:10:58,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495887820] [2020-12-02 14:10:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 14:10:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:10:58,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:10:58,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:10:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:10:58,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:10:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:10:58,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495887820] [2020-12-02 14:10:58,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:10:58,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:10:58,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630657104] [2020-12-02 14:10:58,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:10:58,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:10:58,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:10:58,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:10:58,516 INFO L87 Difference]: Start difference. First operand 105 states and 104 transitions. Second operand 5 states. [2020-12-02 14:10:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:10:58,930 INFO L93 Difference]: Finished difference Result 105 states and 104 transitions. [2020-12-02 14:10:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:10:58,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 14:10:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:10:58,935 INFO L225 Difference]: With dead ends: 105 [2020-12-02 14:10:58,935 INFO L226 Difference]: Without dead ends: 103 [2020-12-02 14:10:58,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:10:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-02 14:10:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-02 14:10:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-02 14:10:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 102 transitions. [2020-12-02 14:10:58,954 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 102 transitions. Word has length 8 [2020-12-02 14:10:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:10:58,954 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 102 transitions. [2020-12-02 14:10:58,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:10:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 102 transitions. [2020-12-02 14:10:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 14:10:58,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:58,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:10:59,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 14:10:59,172 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:59,173 INFO L82 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2020-12-02 14:10:59,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:10:59,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839395575] [2020-12-02 14:10:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-02 14:10:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:10:59,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:10:59,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:10:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:10:59,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:10:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:10:59,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839395575] [2020-12-02 14:10:59,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:10:59,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:10:59,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824674911] [2020-12-02 14:10:59,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:10:59,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:10:59,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:10:59,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:10:59,456 INFO L87 Difference]: Start difference. First operand 103 states and 102 transitions. Second operand 4 states. [2020-12-02 14:10:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:10:59,509 INFO L93 Difference]: Finished difference Result 103 states and 102 transitions. [2020-12-02 14:10:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:10:59,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 14:10:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:10:59,519 INFO L225 Difference]: With dead ends: 103 [2020-12-02 14:10:59,519 INFO L226 Difference]: Without dead ends: 101 [2020-12-02 14:10:59,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:10:59,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-02 14:10:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-12-02 14:10:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-02 14:10:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 100 transitions. [2020-12-02 14:10:59,528 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 100 transitions. Word has length 10 [2020-12-02 14:10:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:10:59,529 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 100 transitions. [2020-12-02 14:10:59,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:10:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 100 transitions. [2020-12-02 14:10:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 14:10:59,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:59,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:10:59,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 14:10:59,744 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:59,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1386190996, now seen corresponding path program 1 times [2020-12-02 14:10:59,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:10:59,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114977698] [2020-12-02 14:10:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:00,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:11:00,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:00,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:00,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114977698] [2020-12-02 14:11:00,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:00,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:00,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778495627] [2020-12-02 14:11:00,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:00,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:00,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:00,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:00,651 INFO L87 Difference]: Start difference. First operand 101 states and 100 transitions. Second operand 4 states. [2020-12-02 14:11:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:00,677 INFO L93 Difference]: Finished difference Result 101 states and 100 transitions. [2020-12-02 14:11:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:00,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 14:11:00,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:00,679 INFO L225 Difference]: With dead ends: 101 [2020-12-02 14:11:00,680 INFO L226 Difference]: Without dead ends: 99 [2020-12-02 14:11:00,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:00,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-02 14:11:00,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-12-02 14:11:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-02 14:11:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 98 transitions. [2020-12-02 14:11:00,687 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 98 transitions. Word has length 12 [2020-12-02 14:11:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:00,687 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 98 transitions. [2020-12-02 14:11:00,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 98 transitions. [2020-12-02 14:11:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 14:11:00,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:00,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:00,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-02 14:11:00,889 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:00,890 INFO L82 PathProgramCache]: Analyzing trace with hash -689559826, now seen corresponding path program 1 times [2020-12-02 14:11:00,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:00,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992996962] [2020-12-02 14:11:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:01,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:11:01,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:01,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:01,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992996962] [2020-12-02 14:11:01,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:01,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:11:01,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907858280] [2020-12-02 14:11:01,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:11:01,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:01,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:11:01,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:11:01,407 INFO L87 Difference]: Start difference. First operand 99 states and 98 transitions. Second operand 5 states. [2020-12-02 14:11:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:01,723 INFO L93 Difference]: Finished difference Result 99 states and 98 transitions. [2020-12-02 14:11:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:11:01,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 14:11:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:01,725 INFO L225 Difference]: With dead ends: 99 [2020-12-02 14:11:01,725 INFO L226 Difference]: Without dead ends: 97 [2020-12-02 14:11:01,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:11:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-02 14:11:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-12-02 14:11:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-02 14:11:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 96 transitions. [2020-12-02 14:11:01,732 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 96 transitions. Word has length 14 [2020-12-02 14:11:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:01,732 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 96 transitions. [2020-12-02 14:11:01,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:11:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 96 transitions. [2020-12-02 14:11:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 14:11:01,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:01,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:01,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-02 14:11:01,947 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:01,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:01,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1241903344, now seen corresponding path program 1 times [2020-12-02 14:11:01,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:01,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317906157] [2020-12-02 14:11:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:02,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:11:02,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:02,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:02,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317906157] [2020-12-02 14:11:02,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:02,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:02,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604229967] [2020-12-02 14:11:02,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:02,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:02,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:02,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:02,392 INFO L87 Difference]: Start difference. First operand 97 states and 96 transitions. Second operand 4 states. [2020-12-02 14:11:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:02,437 INFO L93 Difference]: Finished difference Result 97 states and 96 transitions. [2020-12-02 14:11:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:02,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-02 14:11:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:02,443 INFO L225 Difference]: With dead ends: 97 [2020-12-02 14:11:02,444 INFO L226 Difference]: Without dead ends: 95 [2020-12-02 14:11:02,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-02 14:11:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-12-02 14:11:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-02 14:11:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 94 transitions. [2020-12-02 14:11:02,456 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 94 transitions. Word has length 16 [2020-12-02 14:11:02,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:02,457 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 94 transitions. [2020-12-02 14:11:02,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:02,457 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 94 transitions. [2020-12-02 14:11:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 14:11:02,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:02,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:02,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-02 14:11:02,676 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:02,676 INFO L82 PathProgramCache]: Analyzing trace with hash 531920850, now seen corresponding path program 1 times [2020-12-02 14:11:02,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:02,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982910675] [2020-12-02 14:11:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:02,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:11:02,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:03,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:03,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982910675] [2020-12-02 14:11:03,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:03,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:03,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465500415] [2020-12-02 14:11:03,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:03,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:03,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:03,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:03,400 INFO L87 Difference]: Start difference. First operand 95 states and 94 transitions. Second operand 4 states. [2020-12-02 14:11:03,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:03,432 INFO L93 Difference]: Finished difference Result 95 states and 94 transitions. [2020-12-02 14:11:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:03,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-02 14:11:03,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:03,435 INFO L225 Difference]: With dead ends: 95 [2020-12-02 14:11:03,435 INFO L226 Difference]: Without dead ends: 93 [2020-12-02 14:11:03,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-02 14:11:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-12-02 14:11:03,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-02 14:11:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 92 transitions. [2020-12-02 14:11:03,444 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 92 transitions. Word has length 18 [2020-12-02 14:11:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:03,445 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 92 transitions. [2020-12-02 14:11:03,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 92 transitions. [2020-12-02 14:11:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-02 14:11:03,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:03,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:03,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-02 14:11:03,650 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:03,650 INFO L82 PathProgramCache]: Analyzing trace with hash 74955060, now seen corresponding path program 1 times [2020-12-02 14:11:03,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:03,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142434327] [2020-12-02 14:11:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:03,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:11:03,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:04,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:04,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142434327] [2020-12-02 14:11:04,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:04,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:04,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75697090] [2020-12-02 14:11:04,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:04,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:04,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:04,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:04,058 INFO L87 Difference]: Start difference. First operand 93 states and 92 transitions. Second operand 4 states. [2020-12-02 14:11:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:04,076 INFO L93 Difference]: Finished difference Result 93 states and 92 transitions. [2020-12-02 14:11:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:04,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-02 14:11:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:04,080 INFO L225 Difference]: With dead ends: 93 [2020-12-02 14:11:04,081 INFO L226 Difference]: Without dead ends: 91 [2020-12-02 14:11:04,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-02 14:11:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-02 14:11:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-02 14:11:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 90 transitions. [2020-12-02 14:11:04,088 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 90 transitions. Word has length 20 [2020-12-02 14:11:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:04,089 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 90 transitions. [2020-12-02 14:11:04,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 90 transitions. [2020-12-02 14:11:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-02 14:11:04,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:04,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:04,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-02 14:11:04,307 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:04,308 INFO L82 PathProgramCache]: Analyzing trace with hash -982504650, now seen corresponding path program 1 times [2020-12-02 14:11:04,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:04,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166006214] [2020-12-02 14:11:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:04,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:11:04,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:05,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:05,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166006214] [2020-12-02 14:11:05,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:05,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:05,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356145523] [2020-12-02 14:11:05,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:05,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:05,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:05,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:05,255 INFO L87 Difference]: Start difference. First operand 91 states and 90 transitions. Second operand 4 states. [2020-12-02 14:11:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:07,407 INFO L93 Difference]: Finished difference Result 91 states and 90 transitions. [2020-12-02 14:11:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:07,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-02 14:11:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:07,414 INFO L225 Difference]: With dead ends: 91 [2020-12-02 14:11:07,414 INFO L226 Difference]: Without dead ends: 89 [2020-12-02 14:11:07,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-02 14:11:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-02 14:11:07,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-02 14:11:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 88 transitions. [2020-12-02 14:11:07,428 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 88 transitions. Word has length 22 [2020-12-02 14:11:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:07,429 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 88 transitions. [2020-12-02 14:11:07,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 88 transitions. [2020-12-02 14:11:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-02 14:11:07,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:07,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:07,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-02 14:11:07,635 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:07,636 INFO L82 PathProgramCache]: Analyzing trace with hash 705963480, now seen corresponding path program 1 times [2020-12-02 14:11:07,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:07,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733286743] [2020-12-02 14:11:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:08,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:11:08,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:08,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:08,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733286743] [2020-12-02 14:11:08,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:08,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:08,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650517752] [2020-12-02 14:11:08,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:08,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:08,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:08,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:08,337 INFO L87 Difference]: Start difference. First operand 89 states and 88 transitions. Second operand 4 states. [2020-12-02 14:11:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:08,365 INFO L93 Difference]: Finished difference Result 89 states and 88 transitions. [2020-12-02 14:11:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:08,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-02 14:11:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:08,368 INFO L225 Difference]: With dead ends: 89 [2020-12-02 14:11:08,368 INFO L226 Difference]: Without dead ends: 87 [2020-12-02 14:11:08,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:08,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-02 14:11:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-12-02 14:11:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-02 14:11:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 86 transitions. [2020-12-02 14:11:08,376 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 86 transitions. Word has length 24 [2020-12-02 14:11:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:08,378 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 86 transitions. [2020-12-02 14:11:08,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 86 transitions. [2020-12-02 14:11:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-02 14:11:08,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:08,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:08,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-02 14:11:08,590 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:08,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:08,594 INFO L82 PathProgramCache]: Analyzing trace with hash -173801190, now seen corresponding path program 1 times [2020-12-02 14:11:08,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:08,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919468001] [2020-12-02 14:11:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:08,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 14:11:08,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:14,291 WARN L197 SmtUtils]: Spent 4.62 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-02 14:11:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:14,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:14,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919468001] [2020-12-02 14:11:14,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:14,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:11:14,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332489650] [2020-12-02 14:11:14,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:11:14,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:14,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:11:14,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:11:14,441 INFO L87 Difference]: Start difference. First operand 87 states and 86 transitions. Second operand 5 states. [2020-12-02 14:11:21,800 WARN L197 SmtUtils]: Spent 4.77 s on a formula simplification that was a NOOP. DAG size: 36 [2020-12-02 14:11:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:24,866 INFO L93 Difference]: Finished difference Result 87 states and 86 transitions. [2020-12-02 14:11:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:11:24,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-02 14:11:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:24,869 INFO L225 Difference]: With dead ends: 87 [2020-12-02 14:11:24,869 INFO L226 Difference]: Without dead ends: 85 [2020-12-02 14:11:24,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:11:24,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-02 14:11:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-02 14:11:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-02 14:11:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 84 transitions. [2020-12-02 14:11:24,872 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 84 transitions. Word has length 26 [2020-12-02 14:11:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:24,873 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 84 transitions. [2020-12-02 14:11:24,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:11:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 84 transitions. [2020-12-02 14:11:24,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-02 14:11:24,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:24,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:25,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-02 14:11:25,084 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:25,085 INFO L82 PathProgramCache]: Analyzing trace with hash 480908540, now seen corresponding path program 1 times [2020-12-02 14:11:25,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:25,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463908212] [2020-12-02 14:11:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:25,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:11:25,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:26,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:26,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463908212] [2020-12-02 14:11:26,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:26,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:26,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123808333] [2020-12-02 14:11:26,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:26,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:26,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:26,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:26,862 INFO L87 Difference]: Start difference. First operand 85 states and 84 transitions. Second operand 4 states. [2020-12-02 14:11:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:29,071 INFO L93 Difference]: Finished difference Result 85 states and 84 transitions. [2020-12-02 14:11:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:29,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-12-02 14:11:29,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:29,074 INFO L225 Difference]: With dead ends: 85 [2020-12-02 14:11:29,074 INFO L226 Difference]: Without dead ends: 83 [2020-12-02 14:11:29,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-02 14:11:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-02 14:11:29,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-02 14:11:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 82 transitions. [2020-12-02 14:11:29,077 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 82 transitions. Word has length 28 [2020-12-02 14:11:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:29,077 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 82 transitions. [2020-12-02 14:11:29,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 82 transitions. [2020-12-02 14:11:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-02 14:11:29,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:29,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:29,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-02 14:11:29,289 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1703233154, now seen corresponding path program 1 times [2020-12-02 14:11:29,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:29,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354511016] [2020-12-02 14:11:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:29,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:11:29,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:29,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:29,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354511016] [2020-12-02 14:11:29,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:29,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:29,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717854293] [2020-12-02 14:11:29,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:29,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:29,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:29,852 INFO L87 Difference]: Start difference. First operand 83 states and 82 transitions. Second operand 4 states. [2020-12-02 14:11:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:29,905 INFO L93 Difference]: Finished difference Result 83 states and 82 transitions. [2020-12-02 14:11:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:29,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-02 14:11:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:29,908 INFO L225 Difference]: With dead ends: 83 [2020-12-02 14:11:29,908 INFO L226 Difference]: Without dead ends: 81 [2020-12-02 14:11:29,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-02 14:11:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-02 14:11:29,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-02 14:11:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 80 transitions. [2020-12-02 14:11:29,912 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 80 transitions. Word has length 30 [2020-12-02 14:11:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:29,912 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 80 transitions. [2020-12-02 14:11:29,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 80 transitions. [2020-12-02 14:11:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-02 14:11:29,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:29,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:30,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-02 14:11:30,133 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:30,134 INFO L82 PathProgramCache]: Analyzing trace with hash -424393056, now seen corresponding path program 1 times [2020-12-02 14:11:30,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:30,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940058236] [2020-12-02 14:11:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:30,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 14:11:30,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:35,196 WARN L197 SmtUtils]: Spent 4.56 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-02 14:11:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:35,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:37,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940058236] [2020-12-02 14:11:37,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:37,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:11:37,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274749261] [2020-12-02 14:11:37,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:11:37,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:11:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2020-12-02 14:11:37,646 INFO L87 Difference]: Start difference. First operand 81 states and 80 transitions. Second operand 5 states. [2020-12-02 14:11:50,186 WARN L197 SmtUtils]: Spent 4.82 s on a formula simplification that was a NOOP. DAG size: 36 [2020-12-02 14:11:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:50,997 INFO L93 Difference]: Finished difference Result 81 states and 80 transitions. [2020-12-02 14:11:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:11:51,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-12-02 14:11:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:51,009 INFO L225 Difference]: With dead ends: 81 [2020-12-02 14:11:51,010 INFO L226 Difference]: Without dead ends: 79 [2020-12-02 14:11:51,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2020-12-02 14:11:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-02 14:11:51,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-02 14:11:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-02 14:11:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 78 transitions. [2020-12-02 14:11:51,014 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 78 transitions. Word has length 32 [2020-12-02 14:11:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:51,014 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 78 transitions. [2020-12-02 14:11:51,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:11:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 78 transitions. [2020-12-02 14:11:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-02 14:11:51,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:51,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:51,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-02 14:11:51,218 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:51,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:51,220 INFO L82 PathProgramCache]: Analyzing trace with hash 180294754, now seen corresponding path program 1 times [2020-12-02 14:11:51,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:51,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477258406] [2020-12-02 14:11:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:51,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:11:51,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:51,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:52,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477258406] [2020-12-02 14:11:52,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:52,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:52,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041935462] [2020-12-02 14:11:52,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:52,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:52,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:52,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:52,070 INFO L87 Difference]: Start difference. First operand 79 states and 78 transitions. Second operand 4 states. [2020-12-02 14:11:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:52,127 INFO L93 Difference]: Finished difference Result 79 states and 78 transitions. [2020-12-02 14:11:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:52,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-02 14:11:52,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:52,129 INFO L225 Difference]: With dead ends: 79 [2020-12-02 14:11:52,130 INFO L226 Difference]: Without dead ends: 77 [2020-12-02 14:11:52,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-02 14:11:52,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-12-02 14:11:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-02 14:11:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 76 transitions. [2020-12-02 14:11:52,133 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 76 transitions. Word has length 34 [2020-12-02 14:11:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:52,133 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 76 transitions. [2020-12-02 14:11:52,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:52,133 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 76 transitions. [2020-12-02 14:11:52,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-02 14:11:52,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:52,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:52,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-02 14:11:52,340 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:52,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:52,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1464695492, now seen corresponding path program 1 times [2020-12-02 14:11:52,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:52,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104449733] [2020-12-02 14:11:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:52,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:11:52,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:52,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:53,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104449733] [2020-12-02 14:11:53,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:53,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:53,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770485503] [2020-12-02 14:11:53,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:53,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:53,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:53,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:53,106 INFO L87 Difference]: Start difference. First operand 77 states and 76 transitions. Second operand 4 states. [2020-12-02 14:11:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:55,328 INFO L93 Difference]: Finished difference Result 77 states and 76 transitions. [2020-12-02 14:11:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:55,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-02 14:11:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:55,332 INFO L225 Difference]: With dead ends: 77 [2020-12-02 14:11:55,332 INFO L226 Difference]: Without dead ends: 75 [2020-12-02 14:11:55,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-02 14:11:55,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-12-02 14:11:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-02 14:11:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 74 transitions. [2020-12-02 14:11:55,339 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 74 transitions. Word has length 36 [2020-12-02 14:11:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:55,339 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 74 transitions. [2020-12-02 14:11:55,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 74 transitions. [2020-12-02 14:11:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-02 14:11:55,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:55,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:55,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-12-02 14:11:55,546 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1176776250, now seen corresponding path program 1 times [2020-12-02 14:11:55,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:55,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264620071] [2020-12-02 14:11:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:56,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:11:56,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:56,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:56,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264620071] [2020-12-02 14:11:56,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:56,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:56,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860268634] [2020-12-02 14:11:56,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:56,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:56,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:56,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:56,471 INFO L87 Difference]: Start difference. First operand 75 states and 74 transitions. Second operand 4 states. [2020-12-02 14:11:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:56,526 INFO L93 Difference]: Finished difference Result 75 states and 74 transitions. [2020-12-02 14:11:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:56,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-02 14:11:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:56,528 INFO L225 Difference]: With dead ends: 75 [2020-12-02 14:11:56,528 INFO L226 Difference]: Without dead ends: 73 [2020-12-02 14:11:56,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-02 14:11:56,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-02 14:11:56,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-02 14:11:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 72 transitions. [2020-12-02 14:11:56,531 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 72 transitions. Word has length 38 [2020-12-02 14:11:56,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:56,532 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 72 transitions. [2020-12-02 14:11:56,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 72 transitions. [2020-12-02 14:11:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-02 14:11:56,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:56,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:56,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-12-02 14:11:56,744 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:56,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:56,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1305448088, now seen corresponding path program 1 times [2020-12-02 14:11:56,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:56,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555887721] [2020-12-02 14:11:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:57,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:11:57,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:57,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:58,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555887721] [2020-12-02 14:11:58,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:58,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:58,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006922965] [2020-12-02 14:11:58,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:58,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:58,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:58,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:58,054 INFO L87 Difference]: Start difference. First operand 73 states and 72 transitions. Second operand 4 states. [2020-12-02 14:12:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:08,043 INFO L93 Difference]: Finished difference Result 73 states and 72 transitions. [2020-12-02 14:12:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:12:08,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-12-02 14:12:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:08,044 INFO L225 Difference]: With dead ends: 73 [2020-12-02 14:12:08,044 INFO L226 Difference]: Without dead ends: 71 [2020-12-02 14:12:08,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:12:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-02 14:12:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-02 14:12:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-02 14:12:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 70 transitions. [2020-12-02 14:12:08,047 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 70 transitions. Word has length 40 [2020-12-02 14:12:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:08,047 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 70 transitions. [2020-12-02 14:12:08,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:12:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 70 transitions. [2020-12-02 14:12:08,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-02 14:12:08,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:08,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:08,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-12-02 14:12:08,254 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:08,255 INFO L82 PathProgramCache]: Analyzing trace with hash -405032534, now seen corresponding path program 1 times [2020-12-02 14:12:08,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:08,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516012948] [2020-12-02 14:12:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-12-02 14:12:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:08,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:12:08,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:08,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:08,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516012948] [2020-12-02 14:12:08,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:08,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:12:08,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775095936] [2020-12-02 14:12:08,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:12:08,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:08,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:12:08,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:12:08,895 INFO L87 Difference]: Start difference. First operand 71 states and 70 transitions. Second operand 4 states. [2020-12-02 14:12:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:08,959 INFO L93 Difference]: Finished difference Result 71 states and 70 transitions. [2020-12-02 14:12:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:12:08,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-12-02 14:12:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:08,962 INFO L225 Difference]: With dead ends: 71 [2020-12-02 14:12:08,962 INFO L226 Difference]: Without dead ends: 69 [2020-12-02 14:12:08,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:12:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-02 14:12:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-02 14:12:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-02 14:12:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 68 transitions. [2020-12-02 14:12:08,965 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 68 transitions. Word has length 42 [2020-12-02 14:12:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:08,966 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 68 transitions. [2020-12-02 14:12:08,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:12:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 68 transitions. [2020-12-02 14:12:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-02 14:12:08,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:08,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:09,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-12-02 14:12:09,168 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:09,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1605888652, now seen corresponding path program 1 times [2020-12-02 14:12:09,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:09,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144918449] [2020-12-02 14:12:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-12-02 14:12:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:09,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:12:09,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:09,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:09,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144918449] [2020-12-02 14:12:09,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:09,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:12:09,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388453628] [2020-12-02 14:12:09,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:12:09,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:09,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:12:09,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:12:09,727 INFO L87 Difference]: Start difference. First operand 69 states and 68 transitions. Second operand 4 states. [2020-12-02 14:12:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:09,788 INFO L93 Difference]: Finished difference Result 69 states and 68 transitions. [2020-12-02 14:12:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:12:09,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-02 14:12:09,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:09,789 INFO L225 Difference]: With dead ends: 69 [2020-12-02 14:12:09,789 INFO L226 Difference]: Without dead ends: 67 [2020-12-02 14:12:09,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:12:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-02 14:12:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-02 14:12:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-02 14:12:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 66 transitions. [2020-12-02 14:12:09,791 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 66 transitions. Word has length 44 [2020-12-02 14:12:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:09,792 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 66 transitions. [2020-12-02 14:12:09,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:12:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 66 transitions. [2020-12-02 14:12:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-02 14:12:09,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:09,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:09,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2020-12-02 14:12:09,995 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:09,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:09,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1365865486, now seen corresponding path program 1 times [2020-12-02 14:12:09,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:09,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459928799] [2020-12-02 14:12:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-12-02 14:12:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:10,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:12:10,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:10,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:10,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459928799] [2020-12-02 14:12:10,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:10,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:12:10,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454160961] [2020-12-02 14:12:10,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:12:10,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:12:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:12:10,581 INFO L87 Difference]: Start difference. First operand 67 states and 66 transitions. Second operand 4 states. [2020-12-02 14:12:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:10,644 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2020-12-02 14:12:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:12:10,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-02 14:12:10,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:10,647 INFO L225 Difference]: With dead ends: 67 [2020-12-02 14:12:10,647 INFO L226 Difference]: Without dead ends: 65 [2020-12-02 14:12:10,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:12:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-02 14:12:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-12-02 14:12:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-02 14:12:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 64 transitions. [2020-12-02 14:12:10,649 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 64 transitions. Word has length 46 [2020-12-02 14:12:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:10,650 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 64 transitions. [2020-12-02 14:12:10,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:12:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 64 transitions. [2020-12-02 14:12:10,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-02 14:12:10,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:10,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:10,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-12-02 14:12:10,851 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:10,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:10,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1968470336, now seen corresponding path program 1 times [2020-12-02 14:12:10,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:10,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087636850] [2020-12-02 14:12:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-12-02 14:12:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:11,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:12:11,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:11,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:11,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087636850] [2020-12-02 14:12:11,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:11,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:12:11,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654679164] [2020-12-02 14:12:11,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:12:11,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:12:11,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:12:11,637 INFO L87 Difference]: Start difference. First operand 65 states and 64 transitions. Second operand 5 states. [2020-12-02 14:12:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:12,691 INFO L93 Difference]: Finished difference Result 65 states and 64 transitions. [2020-12-02 14:12:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:12:12,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-12-02 14:12:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:12,693 INFO L225 Difference]: With dead ends: 65 [2020-12-02 14:12:12,693 INFO L226 Difference]: Without dead ends: 63 [2020-12-02 14:12:12,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:12:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-02 14:12:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-12-02 14:12:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-02 14:12:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 62 transitions. [2020-12-02 14:12:12,695 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 62 transitions. Word has length 52 [2020-12-02 14:12:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:12,696 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 62 transitions. [2020-12-02 14:12:12,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:12:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 62 transitions. [2020-12-02 14:12:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-02 14:12:12,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:12,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:12,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-12-02 14:12:12,906 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:12,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1914514434, now seen corresponding path program 1 times [2020-12-02 14:12:12,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:12,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277566083] [2020-12-02 14:12:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2020-12-02 14:12:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:13,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 14:12:13,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:15,688 WARN L197 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-02 14:12:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:15,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:15,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277566083] [2020-12-02 14:12:15,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:15,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:12:15,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728262531] [2020-12-02 14:12:15,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:12:15,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:15,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:12:15,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:12:15,869 INFO L87 Difference]: Start difference. First operand 63 states and 62 transitions. Second operand 5 states. [2020-12-02 14:12:19,055 WARN L197 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 37 [2020-12-02 14:12:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:23,539 INFO L93 Difference]: Finished difference Result 63 states and 62 transitions. [2020-12-02 14:12:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:12:23,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-02 14:12:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:23,541 INFO L225 Difference]: With dead ends: 63 [2020-12-02 14:12:23,541 INFO L226 Difference]: Without dead ends: 61 [2020-12-02 14:12:23,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:12:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-02 14:12:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-02 14:12:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-02 14:12:23,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 60 transitions. [2020-12-02 14:12:23,543 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 60 transitions. Word has length 54 [2020-12-02 14:12:23,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:23,543 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 60 transitions. [2020-12-02 14:12:23,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:12:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 60 transitions. [2020-12-02 14:12:23,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-02 14:12:23,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:23,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:23,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-12-02 14:12:23,753 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:23,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1602500452, now seen corresponding path program 1 times [2020-12-02 14:12:23,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:23,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642560059] [2020-12-02 14:12:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2020-12-02 14:12:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:24,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:12:24,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:24,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:24,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642560059] [2020-12-02 14:12:24,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:24,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:12:24,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902488908] [2020-12-02 14:12:24,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:12:24,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:24,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:12:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:12:24,562 INFO L87 Difference]: Start difference. First operand 61 states and 60 transitions. Second operand 5 states. [2020-12-02 14:12:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:25,489 INFO L93 Difference]: Finished difference Result 61 states and 60 transitions. [2020-12-02 14:12:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:12:25,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-02 14:12:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:25,491 INFO L225 Difference]: With dead ends: 61 [2020-12-02 14:12:25,491 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 14:12:25,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:12:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 14:12:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-02 14:12:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-02 14:12:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 58 transitions. [2020-12-02 14:12:25,494 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 58 transitions. Word has length 56 [2020-12-02 14:12:25,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:25,494 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 58 transitions. [2020-12-02 14:12:25,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:12:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 58 transitions. [2020-12-02 14:12:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-02 14:12:25,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:25,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:25,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2020-12-02 14:12:25,709 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:25,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1890192538, now seen corresponding path program 1 times [2020-12-02 14:12:25,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:25,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651518786] [2020-12-02 14:12:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2020-12-02 14:12:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:26,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 14:12:26,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:28,504 WARN L197 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-02 14:12:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:28,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:28,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651518786] [2020-12-02 14:12:28,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:28,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:12:28,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464404352] [2020-12-02 14:12:28,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:12:28,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:28,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:12:28,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:12:28,664 INFO L87 Difference]: Start difference. First operand 59 states and 58 transitions. Second operand 5 states. [2020-12-02 14:12:31,681 WARN L197 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 37 [2020-12-02 14:12:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:31,681 INFO L93 Difference]: Finished difference Result 59 states and 58 transitions. [2020-12-02 14:12:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:12:31,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-02 14:12:31,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:31,682 INFO L225 Difference]: With dead ends: 59 [2020-12-02 14:12:31,682 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 14:12:31,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:12:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 14:12:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 14:12:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 14:12:31,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 14:12:31,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-12-02 14:12:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:31,683 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 14:12:31,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:12:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 14:12:31,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 14:12:31,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2020-12-02 14:12:31,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-02 14:12:31,890 INFO L262 CegarLoopResult]: For program point L35-2(lines 5 42) no Hoare annotation was computed. [2020-12-02 14:12:31,890 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION(line 40) no Hoare annotation was computed. [2020-12-02 14:12:31,890 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-02 14:12:31,890 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-02 14:12:31,890 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-02 14:12:31,890 INFO L262 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point L4(lines 4 42) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-12-02 14:12:31,891 INFO L262 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L38-3(line 38) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-12-02 14:12:31,892 INFO L262 CegarLoopResult]: For program point L39-3(line 39) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L7-3(line 7) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-12-02 14:12:31,893 INFO L262 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L8-3(line 8) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-12-02 14:12:31,894 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L9-3(line 9) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-12-02 14:12:31,895 INFO L262 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-02 14:12:31,896 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 24) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-12-02 14:12:31,897 INFO L262 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L31-3(line 31) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-12-02 14:12:31,898 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L32-3(lines 5 42) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L33-2(lines 5 42) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-12-02 14:12:31,899 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2020-12-02 14:12:31,900 INFO L262 CegarLoopResult]: For program point L34-2(lines 5 42) no Hoare annotation was computed. [2020-12-02 14:12:31,900 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-02 14:12:31,900 INFO L262 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-12-02 14:12:31,900 INFO L262 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-12-02 14:12:31,900 INFO L262 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-12-02 14:12:31,900 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2020-12-02 14:12:31,900 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-02 14:12:31,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:12:31 BoogieIcfgContainer [2020-12-02 14:12:31,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:12:31,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:12:31,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:12:31,918 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:12:31,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:56" (3/4) ... [2020-12-02 14:12:31,922 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 14:12:31,957 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-02 14:12:31,958 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 14:12:31,959 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-02 14:12:31,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 14:12:32,085 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 14:12:32,085 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:12:32,087 INFO L168 Benchmark]: Toolchain (without parser) took 98777.05 ms. Allocated memory was 46.1 MB in the beginning and 86.0 MB in the end (delta: 39.8 MB). Free memory was 23.2 MB in the beginning and 61.4 MB in the end (delta: -38.2 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:32,088 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 46.1 MB. Free memory was 28.8 MB in the beginning and 28.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:12:32,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.00 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 23.0 MB in the beginning and 40.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:32,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.60 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 37.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:32,089 INFO L168 Benchmark]: Boogie Preprocessor took 127.54 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 35.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:32,090 INFO L168 Benchmark]: RCFGBuilder took 1858.83 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 31.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:32,090 INFO L168 Benchmark]: TraceAbstraction took 95670.59 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 31.0 MB in the beginning and 22.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:32,091 INFO L168 Benchmark]: Witness Printer took 167.74 ms. Allocated memory is still 86.0 MB. Free memory was 22.4 MB in the beginning and 61.4 MB in the end (delta: -39.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:32,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 46.1 MB. Free memory was 28.8 MB in the beginning and 28.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 775.00 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 23.0 MB in the beginning and 40.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 149.60 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 37.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 127.54 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 35.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1858.83 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 31.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 95670.59 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 31.0 MB in the beginning and 22.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Witness Printer took 167.74 ms. Allocated memory is still 86.0 MB. Free memory was 22.4 MB in the beginning and 61.4 MB in the end (delta: -39.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 24]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 33]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 31]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 30]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 38]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 40]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 22]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 34]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 25]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 32]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 9]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 39]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 36]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 23]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 41]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 30 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 95.5s, OverallIterations: 26, TraceHistogramMax: 1, AutomataDifference: 54.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1880 SDtfs, 313 SDslu, 2704 SDs, 0 SdLazy, 634 SolverSat, 7 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 36.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1496 GetRequests, 1420 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 25.2s InterpolantComputationTime, 770 NumberOfCodeBlocks, 770 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1488 ConstructedInterpolants, 22 QuantifiedInterpolants, 123114 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1927 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 52 InterpolantComputations, 52 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...