./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float11.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float11.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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-ee8e70e [2020-10-24 14:15:51,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:15:51,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:15:51,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:15:51,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:15:51,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:15:51,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:15:51,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:15:51,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:15:51,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:15:51,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:15:51,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:15:51,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:15:51,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:15:51,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:15:51,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:15:51,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:15:51,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:15:51,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:15:51,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:15:51,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:15:51,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:15:51,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:15:51,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:15:51,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:15:51,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:15:51,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:15:51,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:15:51,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:15:51,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:15:51,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:15:51,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:15:51,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:15:51,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:15:51,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:15:51,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:15:51,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:15:51,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:15:51,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:15:51,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:15:51,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:15:51,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 14:15:51,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:15:51,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:15:51,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:15:51,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:15:51,860 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:15:51,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:15:51,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:15:51,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 14:15:51,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:15:51,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:15:51,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:15:51,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:15:51,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:15:51,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:15:51,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:15:51,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:15:51,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:15:51,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:15:51,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:15:51,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:15:51,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:15:51,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:15:51,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:15:51,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:15:51,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:15:51,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 14:15:51,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 14:15:51,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:15:51,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:15:51,868 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6a56042e14a7445bc111b9dad948055cf7a2c8 [2020-10-24 14:15:52,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:15:52,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:15:52,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:15:52,374 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:15:52,375 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:15:52,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float11.c [2020-10-24 14:15:52,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832ea1b50/ebdbed5c021f4b3496465a98b940c46b/FLAG69f903dda [2020-10-24 14:15:53,116 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:15:53,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float11.c [2020-10-24 14:15:53,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832ea1b50/ebdbed5c021f4b3496465a98b940c46b/FLAG69f903dda [2020-10-24 14:15:53,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832ea1b50/ebdbed5c021f4b3496465a98b940c46b [2020-10-24 14:15:53,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:15:53,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:15:53,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:15:53,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:15:53,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:15:53,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c3f558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53, skipping insertion in model container [2020-10-24 14:15:53,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,520 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:15:53,546 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:15:53,788 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:15:53,799 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:15:53,824 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:15:53,839 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:15:53,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53 WrapperNode [2020-10-24 14:15:53,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:15:53,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:15:53,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:15:53,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:15:53,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:15:53,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:15:53,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:15:53,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:15:53,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... [2020-10-24 14:15:53,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:15:53,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:15:53,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:15:53,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:15:53,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:15:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:15:53,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:15:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 14:15:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:15:54,563 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:15:54,564 INFO L298 CfgBuilder]: Removed 64 assume(true) statements. [2020-10-24 14:15:54,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:15:54 BoogieIcfgContainer [2020-10-24 14:15:54,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:15:54,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:15:54,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:15:54,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:15:54,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:15:53" (1/3) ... [2020-10-24 14:15:54,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cb3663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:15:54, skipping insertion in model container [2020-10-24 14:15:54,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:53" (2/3) ... [2020-10-24 14:15:54,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cb3663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:15:54, skipping insertion in model container [2020-10-24 14:15:54,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:15:54" (3/3) ... [2020-10-24 14:15:54,578 INFO L111 eAbstractionObserver]: Analyzing ICFG float11.c [2020-10-24 14:15:54,593 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:15:54,598 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-10-24 14:15:54,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-10-24 14:15:54,647 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:15:54,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:15:54,647 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:15:54,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:15:54,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:15:54,648 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:15:54,648 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:15:54,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:15:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-10-24 14:15:54,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 14:15:54,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:15:54,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 14:15:54,681 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]=== [2020-10-24 14:15:54,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:15:54,689 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-24 14:15:54,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:15:54,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178950393] [2020-10-24 14:15:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:15:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:15:54,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:15:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:15:54,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:15:54,865 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 14:15:54,866 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:15:54,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 14:15:54,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:15:54 BoogieIcfgContainer [2020-10-24 14:15:54,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:15:54,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:15:54,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:15:54,890 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:15:54,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:15:54" (3/4) ... [2020-10-24 14:15:54,895 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 14:15:54,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:15:54,898 INFO L168 Benchmark]: Toolchain (without parser) took 1405.82 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.3 MB in the beginning and 26.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:54,899 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 37.7 MB. Free memory was 24.1 MB in the beginning and 24.1 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:15:54,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.00 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 23.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:54,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.64 ms. Allocated memory is still 46.1 MB. Free memory was 23.8 MB in the beginning and 22.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:54,902 INFO L168 Benchmark]: Boogie Preprocessor took 33.91 ms. Allocated memory is still 46.1 MB. Free memory was 22.1 MB in the beginning and 30.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:54,903 INFO L168 Benchmark]: RCFGBuilder took 644.67 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.3 MB in the beginning and 39.6 MB in the end (delta: -9.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:54,904 INFO L168 Benchmark]: TraceAbstraction took 320.22 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 27.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:54,905 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 56.6 MB. Free memory was 27.1 MB in the beginning and 26.8 MB in the end (delta: 249.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:15:54,910 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 37.7 MB. Free memory was 24.1 MB in the beginning and 24.1 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.00 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 23.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.64 ms. Allocated memory is still 46.1 MB. Free memory was 23.8 MB in the beginning and 22.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.91 ms. Allocated memory is still 46.1 MB. Free memory was 22.1 MB in the beginning and 30.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 644.67 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.3 MB in the beginning and 39.6 MB in the end (delta: -9.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 320.22 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 27.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.32 ms. Allocated memory is still 56.6 MB. Free memory was 27.1 MB in the beginning and 26.8 MB in the end (delta: 249.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 7. Possible FailurePath: [L7] COND TRUE !(1.0<2.5) [L3] __assert_fail("0", "float11.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 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=125occurred 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-ee8e70e [2020-10-24 14:15:57,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:15:57,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:15:57,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:15:57,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:15:57,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:15:57,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:15:57,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:15:57,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:15:57,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:15:57,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:15:57,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:15:57,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:15:57,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:15:57,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:15:57,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:15:57,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:15:57,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:15:57,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:15:57,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:15:57,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:15:57,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:15:57,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:15:57,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:15:57,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:15:57,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:15:57,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:15:57,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:15:57,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:15:57,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:15:57,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:15:57,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:15:57,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:15:57,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:15:57,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:15:57,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:15:57,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:15:57,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:15:57,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:15:57,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:15:57,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:15:57,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 14:15:57,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:15:57,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:15:57,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:15:57,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:15:57,693 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:15:57,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:15:57,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:15:57,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:15:57,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:15:57,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:15:57,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:15:57,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:15:57,696 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 14:15:57,696 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 14:15:57,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:15:57,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:15:57,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:15:57,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:15:57,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:15:57,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:15:57,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:15:57,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:15:57,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:15:57,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:15:57,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:15:57,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:15:57,700 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 14:15:57,700 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 14:15:57,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:15:57,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:15:57,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 14:15:57,701 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6a56042e14a7445bc111b9dad948055cf7a2c8 [2020-10-24 14:15:58,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:15:58,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:15:58,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:15:58,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:15:58,169 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:15:58,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float11.c [2020-10-24 14:15:58,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c0941eb8/8075fbeb8bdd400889a44e2c3cf4339c/FLAG04d29943b [2020-10-24 14:15:58,896 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:15:58,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float11.c [2020-10-24 14:15:58,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c0941eb8/8075fbeb8bdd400889a44e2c3cf4339c/FLAG04d29943b [2020-10-24 14:15:59,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c0941eb8/8075fbeb8bdd400889a44e2c3cf4339c [2020-10-24 14:15:59,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:15:59,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:15:59,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:15:59,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:15:59,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:15:59,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2c2d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59, skipping insertion in model container [2020-10-24 14:15:59,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,290 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:15:59,310 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:15:59,541 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:15:59,559 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:15:59,626 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:15:59,676 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:15:59,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59 WrapperNode [2020-10-24 14:15:59,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:15:59,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:15:59,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:15:59,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:15:59,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:15:59,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:15:59,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:15:59,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:15:59,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2020-10-24 14:15:59,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:15:59,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:15:59,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:15:59,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:15:59,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 14:16:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 14:16:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:16:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:16:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:16:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 14:16:01,036 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:16:01,036 INFO L298 CfgBuilder]: Removed 64 assume(true) statements. [2020-10-24 14:16:01,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:01 BoogieIcfgContainer [2020-10-24 14:16:01,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:16:01,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:16:01,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:16:01,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:16:01,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:15:59" (1/3) ... [2020-10-24 14:16:01,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469ab957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:01, skipping insertion in model container [2020-10-24 14:16:01,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (2/3) ... [2020-10-24 14:16:01,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469ab957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:01, skipping insertion in model container [2020-10-24 14:16:01,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:01" (3/3) ... [2020-10-24 14:16:01,048 INFO L111 eAbstractionObserver]: Analyzing ICFG float11.c [2020-10-24 14:16:01,061 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:16:01,067 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-10-24 14:16:01,081 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-10-24 14:16:01,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:16:01,111 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:16:01,111 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:16:01,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:16:01,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:16:01,112 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:16:01,112 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:16:01,112 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:16:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-10-24 14:16:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 14:16:01,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:01,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 14:16:01,143 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]=== [2020-10-24 14:16:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-24 14:16:01,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:01,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825404983] [2020-10-24 14:16:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:01,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:16:01,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:01,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:01,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825404983] [2020-10-24 14:16:01,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:01,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:01,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729658263] [2020-10-24 14:16:01,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:01,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:01,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:01,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:01,463 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 4 states. [2020-10-24 14:16:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:01,524 INFO L93 Difference]: Finished difference Result 257 states and 314 transitions. [2020-10-24 14:16:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:01,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-10-24 14:16:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:01,540 INFO L225 Difference]: With dead ends: 257 [2020-10-24 14:16:01,540 INFO L226 Difference]: Without dead ends: 107 [2020-10-24 14:16:01,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-24 14:16:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-24 14:16:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-24 14:16:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 106 transitions. [2020-10-24 14:16:01,609 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 106 transitions. Word has length 4 [2020-10-24 14:16:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:01,609 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 106 transitions. [2020-10-24 14:16:01,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 106 transitions. [2020-10-24 14:16:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 14:16:01,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:01,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 14:16:01,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 14:16:01,825 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]=== [2020-10-24 14:16:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:01,827 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-10-24 14:16:01,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:01,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548879039] [2020-10-24 14:16:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:01,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:16:01,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:01,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:02,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548879039] [2020-10-24 14:16:02,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:02,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:02,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024223394] [2020-10-24 14:16:02,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:02,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:02,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:02,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:02,038 INFO L87 Difference]: Start difference. First operand 107 states and 106 transitions. Second operand 4 states. [2020-10-24 14:16:02,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:02,071 INFO L93 Difference]: Finished difference Result 107 states and 106 transitions. [2020-10-24 14:16:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:02,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-24 14:16:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:02,075 INFO L225 Difference]: With dead ends: 107 [2020-10-24 14:16:02,075 INFO L226 Difference]: Without dead ends: 105 [2020-10-24 14:16:02,076 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 [2020-10-24 14:16:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-24 14:16:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-24 14:16:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-24 14:16:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 104 transitions. [2020-10-24 14:16:02,094 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 104 transitions. Word has length 6 [2020-10-24 14:16:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:02,106 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 104 transitions. [2020-10-24 14:16:02,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 104 transitions. [2020-10-24 14:16:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 14:16:02,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:02,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:02,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 14:16:02,323 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]=== [2020-10-24 14:16:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:02,324 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-10-24 14:16:02,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:02,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561139200] [2020-10-24 14:16:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:02,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:16:02,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:02,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:02,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561139200] [2020-10-24 14:16:02,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:02,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:16:02,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103660962] [2020-10-24 14:16:02,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:16:02,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:02,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:16:02,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:16:02,566 INFO L87 Difference]: Start difference. First operand 105 states and 104 transitions. Second operand 5 states. [2020-10-24 14:16:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:02,926 INFO L93 Difference]: Finished difference Result 105 states and 104 transitions. [2020-10-24 14:16:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:16:02,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-24 14:16:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:02,930 INFO L225 Difference]: With dead ends: 105 [2020-10-24 14:16:02,931 INFO L226 Difference]: Without dead ends: 103 [2020-10-24 14:16:02,935 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 [2020-10-24 14:16:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-24 14:16:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-24 14:16:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-24 14:16:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 102 transitions. [2020-10-24 14:16:02,954 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 102 transitions. Word has length 8 [2020-10-24 14:16:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:02,954 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 102 transitions. [2020-10-24 14:16:02,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:16:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 102 transitions. [2020-10-24 14:16:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 14:16:02,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:02,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:03,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 14:16:03,164 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]=== [2020-10-24 14:16:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:03,166 INFO L82 PathProgramCache]: Analyzing trace with hash 179821258, now seen corresponding path program 1 times [2020-10-24 14:16:03,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:03,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18896978] [2020-10-24 14:16:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:03,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:16:03,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:03,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:03,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18896978] [2020-10-24 14:16:03,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:03,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:03,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384064645] [2020-10-24 14:16:03,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:03,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:03,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:03,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:03,342 INFO L87 Difference]: Start difference. First operand 103 states and 102 transitions. Second operand 4 states. [2020-10-24 14:16:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:03,372 INFO L93 Difference]: Finished difference Result 103 states and 102 transitions. [2020-10-24 14:16:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:03,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-24 14:16:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:03,376 INFO L225 Difference]: With dead ends: 103 [2020-10-24 14:16:03,376 INFO L226 Difference]: Without dead ends: 101 [2020-10-24 14:16:03,377 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 [2020-10-24 14:16:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-24 14:16:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-24 14:16:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-24 14:16:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 100 transitions. [2020-10-24 14:16:03,384 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 100 transitions. Word has length 10 [2020-10-24 14:16:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:03,384 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 100 transitions. [2020-10-24 14:16:03,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 100 transitions. [2020-10-24 14:16:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 14:16:03,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:03,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:03,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 14:16:03,601 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]=== [2020-10-24 14:16:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:03,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1009724140, now seen corresponding path program 1 times [2020-10-24 14:16:03,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:03,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017418279] [2020-10-24 14:16:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:03,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:16:03,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:03,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:03,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017418279] [2020-10-24 14:16:03,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:03,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:03,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309852554] [2020-10-24 14:16:03,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:03,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:03,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:03,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:03,833 INFO L87 Difference]: Start difference. First operand 101 states and 100 transitions. Second operand 4 states. [2020-10-24 14:16:03,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:03,859 INFO L93 Difference]: Finished difference Result 101 states and 100 transitions. [2020-10-24 14:16:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:03,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-24 14:16:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:03,862 INFO L225 Difference]: With dead ends: 101 [2020-10-24 14:16:03,862 INFO L226 Difference]: Without dead ends: 99 [2020-10-24 14:16:03,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-24 14:16:03,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-24 14:16:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-24 14:16:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 98 transitions. [2020-10-24 14:16:03,882 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 98 transitions. Word has length 12 [2020-10-24 14:16:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:03,883 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 98 transitions. [2020-10-24 14:16:03,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 98 transitions. [2020-10-24 14:16:03,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 14:16:03,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:03,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:04,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-24 14:16:04,100 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]=== [2020-10-24 14:16:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:04,102 INFO L82 PathProgramCache]: Analyzing trace with hash -317522962, now seen corresponding path program 1 times [2020-10-24 14:16:04,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:04,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274262903] [2020-10-24 14:16:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:04,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:16:04,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:04,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:04,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274262903] [2020-10-24 14:16:04,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:04,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:16:04,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135847458] [2020-10-24 14:16:04,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:16:04,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:04,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:16:04,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:16:04,355 INFO L87 Difference]: Start difference. First operand 99 states and 98 transitions. Second operand 5 states. [2020-10-24 14:16:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:04,613 INFO L93 Difference]: Finished difference Result 99 states and 98 transitions. [2020-10-24 14:16:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:16:04,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-24 14:16:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:04,615 INFO L225 Difference]: With dead ends: 99 [2020-10-24 14:16:04,615 INFO L226 Difference]: Without dead ends: 97 [2020-10-24 14:16:04,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:16:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-24 14:16:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-24 14:16:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-24 14:16:04,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 96 transitions. [2020-10-24 14:16:04,629 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 96 transitions. Word has length 14 [2020-10-24 14:16:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:04,630 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 96 transitions. [2020-10-24 14:16:04,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:16:04,631 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 96 transitions. [2020-10-24 14:16:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 14:16:04,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:04,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:04,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-24 14:16:04,847 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]=== [2020-10-24 14:16:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:04,848 INFO L82 PathProgramCache]: Analyzing trace with hash -196700720, now seen corresponding path program 1 times [2020-10-24 14:16:04,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:04,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276755311] [2020-10-24 14:16:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:05,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:16:05,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:05,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:05,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276755311] [2020-10-24 14:16:05,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:05,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:05,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676637196] [2020-10-24 14:16:05,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:05,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:05,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:05,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:05,093 INFO L87 Difference]: Start difference. First operand 97 states and 96 transitions. Second operand 4 states. [2020-10-24 14:16:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:05,118 INFO L93 Difference]: Finished difference Result 97 states and 96 transitions. [2020-10-24 14:16:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:05,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-24 14:16:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:05,120 INFO L225 Difference]: With dead ends: 97 [2020-10-24 14:16:05,121 INFO L226 Difference]: Without dead ends: 95 [2020-10-24 14:16:05,121 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 [2020-10-24 14:16:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-24 14:16:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-24 14:16:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-24 14:16:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 94 transitions. [2020-10-24 14:16:05,126 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 94 transitions. Word has length 16 [2020-10-24 14:16:05,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:05,127 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 94 transitions. [2020-10-24 14:16:05,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:05,127 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 94 transitions. [2020-10-24 14:16:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 14:16:05,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:05,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:05,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-24 14:16:05,342 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]=== [2020-10-24 14:16:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:05,343 INFO L82 PathProgramCache]: Analyzing trace with hash -50642798, now seen corresponding path program 1 times [2020-10-24 14:16:05,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:05,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034396354] [2020-10-24 14:16:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:05,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:16:05,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:05,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:05,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034396354] [2020-10-24 14:16:05,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:05,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:05,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430844477] [2020-10-24 14:16:05,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:05,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:05,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:05,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:05,598 INFO L87 Difference]: Start difference. First operand 95 states and 94 transitions. Second operand 4 states. [2020-10-24 14:16:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:05,617 INFO L93 Difference]: Finished difference Result 95 states and 94 transitions. [2020-10-24 14:16:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:05,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-24 14:16:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:05,619 INFO L225 Difference]: With dead ends: 95 [2020-10-24 14:16:05,619 INFO L226 Difference]: Without dead ends: 93 [2020-10-24 14:16:05,620 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 [2020-10-24 14:16:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-24 14:16:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-24 14:16:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-24 14:16:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 92 transitions. [2020-10-24 14:16:05,624 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 92 transitions. Word has length 18 [2020-10-24 14:16:05,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:05,625 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 92 transitions. [2020-10-24 14:16:05,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 92 transitions. [2020-10-24 14:16:05,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-24 14:16:05,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:05,626 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] [2020-10-24 14:16:05,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-24 14:16:05,843 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]=== [2020-10-24 14:16:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1422900172, now seen corresponding path program 1 times [2020-10-24 14:16:05,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:05,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275707737] [2020-10-24 14:16:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:05,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:16:05,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:06,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:06,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275707737] [2020-10-24 14:16:06,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:06,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:06,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053454822] [2020-10-24 14:16:06,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:06,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:06,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:06,034 INFO L87 Difference]: Start difference. First operand 93 states and 92 transitions. Second operand 4 states. [2020-10-24 14:16:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:06,050 INFO L93 Difference]: Finished difference Result 93 states and 92 transitions. [2020-10-24 14:16:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:06,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-24 14:16:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:06,052 INFO L225 Difference]: With dead ends: 93 [2020-10-24 14:16:06,052 INFO L226 Difference]: Without dead ends: 91 [2020-10-24 14:16:06,053 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 [2020-10-24 14:16:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-24 14:16:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-24 14:16:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-24 14:16:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 90 transitions. [2020-10-24 14:16:06,056 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 90 transitions. Word has length 20 [2020-10-24 14:16:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:06,057 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 90 transitions. [2020-10-24 14:16:06,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 90 transitions. [2020-10-24 14:16:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 14:16:06,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:06,058 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] [2020-10-24 14:16:06,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-24 14:16:06,270 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]=== [2020-10-24 14:16:06,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:06,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1607276362, now seen corresponding path program 1 times [2020-10-24 14:16:06,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:06,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684550987] [2020-10-24 14:16:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:06,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:16:06,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:06,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:06,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684550987] [2020-10-24 14:16:06,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:06,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:06,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028544278] [2020-10-24 14:16:06,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:06,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:06,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:06,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:06,520 INFO L87 Difference]: Start difference. First operand 91 states and 90 transitions. Second operand 4 states. [2020-10-24 14:16:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:06,542 INFO L93 Difference]: Finished difference Result 91 states and 90 transitions. [2020-10-24 14:16:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:06,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-24 14:16:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:06,544 INFO L225 Difference]: With dead ends: 91 [2020-10-24 14:16:06,545 INFO L226 Difference]: Without dead ends: 89 [2020-10-24 14:16:06,545 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 [2020-10-24 14:16:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-24 14:16:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-24 14:16:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-24 14:16:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 88 transitions. [2020-10-24 14:16:06,549 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 88 transitions. Word has length 22 [2020-10-24 14:16:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:06,549 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 88 transitions. [2020-10-24 14:16:06,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 88 transitions. [2020-10-24 14:16:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-24 14:16:06,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:06,550 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] [2020-10-24 14:16:06,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-24 14:16:06,752 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]=== [2020-10-24 14:16:06,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:06,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1595831832, now seen corresponding path program 1 times [2020-10-24 14:16:06,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:06,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78895596] [2020-10-24 14:16:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:06,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:16:06,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:06,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:07,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78895596] [2020-10-24 14:16:07,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:07,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:07,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073622003] [2020-10-24 14:16:07,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:07,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:07,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:07,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:07,043 INFO L87 Difference]: Start difference. First operand 89 states and 88 transitions. Second operand 4 states. [2020-10-24 14:16:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:07,064 INFO L93 Difference]: Finished difference Result 89 states and 88 transitions. [2020-10-24 14:16:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:07,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-24 14:16:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:07,067 INFO L225 Difference]: With dead ends: 89 [2020-10-24 14:16:07,067 INFO L226 Difference]: Without dead ends: 87 [2020-10-24 14:16:07,068 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 [2020-10-24 14:16:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-24 14:16:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-24 14:16:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-24 14:16:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 86 transitions. [2020-10-24 14:16:07,071 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 86 transitions. Word has length 24 [2020-10-24 14:16:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:07,072 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 86 transitions. [2020-10-24 14:16:07,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 86 transitions. [2020-10-24 14:16:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 14:16:07,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:07,073 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] [2020-10-24 14:16:07,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-24 14:16:07,284 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]=== [2020-10-24 14:16:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:07,285 INFO L82 PathProgramCache]: Analyzing trace with hash 291255386, now seen corresponding path program 1 times [2020-10-24 14:16:07,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:07,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511884983] [2020-10-24 14:16:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:07,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-24 14:16:07,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:12,203 WARN L193 SmtUtils]: Spent 4.68 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-24 14:16:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:12,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:12,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511884983] [2020-10-24 14:16:12,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:12,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:16:12,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762454614] [2020-10-24 14:16:12,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:16:12,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:12,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:16:12,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:16:12,363 INFO L87 Difference]: Start difference. First operand 87 states and 86 transitions. Second operand 5 states. [2020-10-24 14:16:17,599 WARN L193 SmtUtils]: Spent 4.77 s on a formula simplification that was a NOOP. DAG size: 36 [2020-10-24 14:16:18,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:18,337 INFO L93 Difference]: Finished difference Result 87 states and 86 transitions. [2020-10-24 14:16:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:16:18,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-24 14:16:18,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:18,340 INFO L225 Difference]: With dead ends: 87 [2020-10-24 14:16:18,340 INFO L226 Difference]: Without dead ends: 85 [2020-10-24 14:16:18,340 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 [2020-10-24 14:16:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-24 14:16:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-24 14:16:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-24 14:16:18,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 84 transitions. [2020-10-24 14:16:18,343 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 84 transitions. Word has length 26 [2020-10-24 14:16:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:18,343 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 84 transitions. [2020-10-24 14:16:18,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:16:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 84 transitions. [2020-10-24 14:16:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-24 14:16:18,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:18,345 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] [2020-10-24 14:16:18,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-24 14:16:18,553 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]=== [2020-10-24 14:16:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:18,554 INFO L82 PathProgramCache]: Analyzing trace with hash 723741564, now seen corresponding path program 1 times [2020-10-24 14:16:18,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:18,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472701333] [2020-10-24 14:16:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:18,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:16:18,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:18,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:19,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472701333] [2020-10-24 14:16:19,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:19,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:19,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792924973] [2020-10-24 14:16:19,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:19,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:19,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:19,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:19,011 INFO L87 Difference]: Start difference. First operand 85 states and 84 transitions. Second operand 4 states. [2020-10-24 14:16:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:19,061 INFO L93 Difference]: Finished difference Result 85 states and 84 transitions. [2020-10-24 14:16:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:19,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-24 14:16:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:19,064 INFO L225 Difference]: With dead ends: 85 [2020-10-24 14:16:19,064 INFO L226 Difference]: Without dead ends: 83 [2020-10-24 14:16:19,065 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 [2020-10-24 14:16:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-24 14:16:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-24 14:16:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-24 14:16:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 82 transitions. [2020-10-24 14:16:19,067 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 82 transitions. Word has length 28 [2020-10-24 14:16:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:19,068 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 82 transitions. [2020-10-24 14:16:19,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 82 transitions. [2020-10-24 14:16:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-24 14:16:19,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:19,069 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] [2020-10-24 14:16:19,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-24 14:16:19,271 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]=== [2020-10-24 14:16:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:19,272 INFO L82 PathProgramCache]: Analyzing trace with hash -268868738, now seen corresponding path program 1 times [2020-10-24 14:16:19,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:19,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067689577] [2020-10-24 14:16:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:19,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:16:19,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:19,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:19,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067689577] [2020-10-24 14:16:19,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:19,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:19,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423496515] [2020-10-24 14:16:19,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:19,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:19,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:19,786 INFO L87 Difference]: Start difference. First operand 83 states and 82 transitions. Second operand 4 states. [2020-10-24 14:16:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:22,013 INFO L93 Difference]: Finished difference Result 83 states and 82 transitions. [2020-10-24 14:16:22,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:22,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-24 14:16:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:22,017 INFO L225 Difference]: With dead ends: 83 [2020-10-24 14:16:22,017 INFO L226 Difference]: Without dead ends: 81 [2020-10-24 14:16:22,017 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 [2020-10-24 14:16:22,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-24 14:16:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-24 14:16:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-24 14:16:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 80 transitions. [2020-10-24 14:16:22,021 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 80 transitions. Word has length 30 [2020-10-24 14:16:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:22,021 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 80 transitions. [2020-10-24 14:16:22,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 80 transitions. [2020-10-24 14:16:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 14:16:22,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:22,023 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] [2020-10-24 14:16:22,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-10-24 14:16:22,235 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]=== [2020-10-24 14:16:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:22,236 INFO L82 PathProgramCache]: Analyzing trace with hash -684628896, now seen corresponding path program 1 times [2020-10-24 14:16:22,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:22,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587177381] [2020-10-24 14:16:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:22,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-24 14:16:22,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:27,334 WARN L193 SmtUtils]: Spent 4.69 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-24 14:16:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:27,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:29,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587177381] [2020-10-24 14:16:29,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:29,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:16:29,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662277958] [2020-10-24 14:16:29,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:16:29,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:29,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:16:29,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2020-10-24 14:16:29,858 INFO L87 Difference]: Start difference. First operand 81 states and 80 transitions. Second operand 5 states. [2020-10-24 14:16:35,262 WARN L193 SmtUtils]: Spent 4.75 s on a formula simplification that was a NOOP. DAG size: 36 [2020-10-24 14:16:35,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:35,680 INFO L93 Difference]: Finished difference Result 81 states and 80 transitions. [2020-10-24 14:16:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:16:35,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-24 14:16:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:35,682 INFO L225 Difference]: With dead ends: 81 [2020-10-24 14:16:35,682 INFO L226 Difference]: Without dead ends: 79 [2020-10-24 14:16:35,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2020-10-24 14:16:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-24 14:16:35,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-24 14:16:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-24 14:16:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 78 transitions. [2020-10-24 14:16:35,685 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 78 transitions. Word has length 32 [2020-10-24 14:16:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:35,686 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 78 transitions. [2020-10-24 14:16:35,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:16:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 78 transitions. [2020-10-24 14:16:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-24 14:16:35,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:35,687 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] [2020-10-24 14:16:35,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-10-24 14:16:35,896 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]=== [2020-10-24 14:16:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:35,897 INFO L82 PathProgramCache]: Analyzing trace with hash -798181854, now seen corresponding path program 1 times [2020-10-24 14:16:35,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:35,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229251229] [2020-10-24 14:16:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:36,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:16:36,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:36,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:36,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229251229] [2020-10-24 14:16:36,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:36,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:36,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74528453] [2020-10-24 14:16:36,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:36,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:36,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:36,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:36,472 INFO L87 Difference]: Start difference. First operand 79 states and 78 transitions. Second operand 4 states. [2020-10-24 14:16:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:38,585 INFO L93 Difference]: Finished difference Result 79 states and 78 transitions. [2020-10-24 14:16:38,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:38,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-24 14:16:38,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:38,692 INFO L225 Difference]: With dead ends: 79 [2020-10-24 14:16:38,692 INFO L226 Difference]: Without dead ends: 77 [2020-10-24 14:16:38,693 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 [2020-10-24 14:16:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-24 14:16:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-24 14:16:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-24 14:16:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 76 transitions. [2020-10-24 14:16:38,696 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 76 transitions. Word has length 34 [2020-10-24 14:16:38,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:38,696 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 76 transitions. [2020-10-24 14:16:38,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:38,696 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 76 transitions. [2020-10-24 14:16:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-24 14:16:38,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:38,698 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] [2020-10-24 14:16:38,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-10-24 14:16:38,906 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]=== [2020-10-24 14:16:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:38,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1746575556, now seen corresponding path program 1 times [2020-10-24 14:16:38,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:38,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076667016] [2020-10-24 14:16:38,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:39,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:16:39,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:39,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:39,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076667016] [2020-10-24 14:16:39,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:39,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:39,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918186310] [2020-10-24 14:16:39,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:39,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:39,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:39,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:39,455 INFO L87 Difference]: Start difference. First operand 77 states and 76 transitions. Second operand 4 states. [2020-10-24 14:16:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:41,681 INFO L93 Difference]: Finished difference Result 77 states and 76 transitions. [2020-10-24 14:16:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:41,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-24 14:16:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:41,685 INFO L225 Difference]: With dead ends: 77 [2020-10-24 14:16:41,685 INFO L226 Difference]: Without dead ends: 75 [2020-10-24 14:16:41,685 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 [2020-10-24 14:16:41,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-24 14:16:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-24 14:16:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-24 14:16:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 74 transitions. [2020-10-24 14:16:41,687 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 74 transitions. Word has length 36 [2020-10-24 14:16:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:41,688 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 74 transitions. [2020-10-24 14:16:41,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 74 transitions. [2020-10-24 14:16:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-24 14:16:41,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:41,689 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] [2020-10-24 14:16:41,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-10-24 14:16:41,898 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]=== [2020-10-24 14:16:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:41,899 INFO L82 PathProgramCache]: Analyzing trace with hash -872911802, now seen corresponding path program 1 times [2020-10-24 14:16:41,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:41,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318694935] [2020-10-24 14:16:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:42,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:16:42,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:42,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:42,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318694935] [2020-10-24 14:16:42,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:42,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:42,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544592293] [2020-10-24 14:16:42,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:42,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:42,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:42,477 INFO L87 Difference]: Start difference. First operand 75 states and 74 transitions. Second operand 4 states. [2020-10-24 14:16:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:44,730 INFO L93 Difference]: Finished difference Result 75 states and 74 transitions. [2020-10-24 14:16:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:44,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-24 14:16:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:44,732 INFO L225 Difference]: With dead ends: 75 [2020-10-24 14:16:44,732 INFO L226 Difference]: Without dead ends: 73 [2020-10-24 14:16:44,733 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 [2020-10-24 14:16:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-24 14:16:44,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-24 14:16:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-24 14:16:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 72 transitions. [2020-10-24 14:16:44,735 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 72 transitions. Word has length 38 [2020-10-24 14:16:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:44,736 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 72 transitions. [2020-10-24 14:16:44,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 72 transitions. [2020-10-24 14:16:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-24 14:16:44,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:44,737 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] [2020-10-24 14:16:44,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-10-24 14:16:44,945 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]=== [2020-10-24 14:16:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1349427032, now seen corresponding path program 1 times [2020-10-24 14:16:44,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:44,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042310237] [2020-10-24 14:16:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:45,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:16:45,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:45,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:45,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042310237] [2020-10-24 14:16:45,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:45,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:45,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129735969] [2020-10-24 14:16:45,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:45,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:45,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:45,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:45,504 INFO L87 Difference]: Start difference. First operand 73 states and 72 transitions. Second operand 4 states. [2020-10-24 14:16:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:55,664 INFO L93 Difference]: Finished difference Result 73 states and 72 transitions. [2020-10-24 14:16:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:55,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-24 14:16:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:55,666 INFO L225 Difference]: With dead ends: 73 [2020-10-24 14:16:55,666 INFO L226 Difference]: Without dead ends: 71 [2020-10-24 14:16:55,666 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 [2020-10-24 14:16:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-24 14:16:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-24 14:16:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-24 14:16:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 70 transitions. [2020-10-24 14:16:55,669 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 70 transitions. Word has length 40 [2020-10-24 14:16:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:55,669 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 70 transitions. [2020-10-24 14:16:55,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 70 transitions. [2020-10-24 14:16:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-24 14:16:55,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:55,670 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] [2020-10-24 14:16:55,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-10-24 14:16:55,877 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]=== [2020-10-24 14:16:55,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:55,878 INFO L82 PathProgramCache]: Analyzing trace with hash 280937962, now seen corresponding path program 1 times [2020-10-24 14:16:55,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:55,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371020432] [2020-10-24 14:16:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:56,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:16:56,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:56,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:56,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371020432] [2020-10-24 14:16:56,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:56,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:56,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666198360] [2020-10-24 14:16:56,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:56,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:56,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:56,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:56,532 INFO L87 Difference]: Start difference. First operand 71 states and 70 transitions. Second operand 4 states. [2020-10-24 14:16:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:56,636 INFO L93 Difference]: Finished difference Result 71 states and 70 transitions. [2020-10-24 14:16:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:56,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-24 14:16:56,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:56,639 INFO L225 Difference]: With dead ends: 71 [2020-10-24 14:16:56,639 INFO L226 Difference]: Without dead ends: 69 [2020-10-24 14:16:56,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-24 14:16:56,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-24 14:16:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-24 14:16:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 68 transitions. [2020-10-24 14:16:56,641 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 68 transitions. Word has length 42 [2020-10-24 14:16:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:56,642 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 68 transitions. [2020-10-24 14:16:56,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 68 transitions. [2020-10-24 14:16:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-24 14:16:56,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:56,643 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] [2020-10-24 14:16:56,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-10-24 14:16:56,846 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]=== [2020-10-24 14:16:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:56,847 INFO L82 PathProgramCache]: Analyzing trace with hash -601365492, now seen corresponding path program 1 times [2020-10-24 14:16:56,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:56,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331837510] [2020-10-24 14:16:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:57,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:16:57,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:57,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:57,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:57,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331837510] [2020-10-24 14:16:57,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:57,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:57,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185541801] [2020-10-24 14:16:57,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:57,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:57,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:57,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:57,501 INFO L87 Difference]: Start difference. First operand 69 states and 68 transitions. Second operand 4 states. [2020-10-24 14:16:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:57,594 INFO L93 Difference]: Finished difference Result 69 states and 68 transitions. [2020-10-24 14:16:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:57,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-24 14:16:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:57,600 INFO L225 Difference]: With dead ends: 69 [2020-10-24 14:16:57,600 INFO L226 Difference]: Without dead ends: 67 [2020-10-24 14:16:57,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-24 14:16:57,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-24 14:16:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-24 14:16:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 66 transitions. [2020-10-24 14:16:57,603 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 66 transitions. Word has length 44 [2020-10-24 14:16:57,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:57,603 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 66 transitions. [2020-10-24 14:16:57,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:57,603 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 66 transitions. [2020-10-24 14:16:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-24 14:16:57,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:57,604 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] [2020-10-24 14:16:57,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2020-10-24 14:16:57,805 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]=== [2020-10-24 14:16:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:57,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1908540174, now seen corresponding path program 1 times [2020-10-24 14:16:57,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:57,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918436057] [2020-10-24 14:16:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:16:58,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:58,355 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-10-24 14:16:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:58,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:58,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918436057] [2020-10-24 14:16:58,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:58,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:16:58,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771259959] [2020-10-24 14:16:58,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:16:58,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:58,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:16:58,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:58,512 INFO L87 Difference]: Start difference. First operand 67 states and 66 transitions. Second operand 4 states. [2020-10-24 14:16:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:58,617 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2020-10-24 14:16:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:16:58,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-24 14:16:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:58,624 INFO L225 Difference]: With dead ends: 67 [2020-10-24 14:16:58,624 INFO L226 Difference]: Without dead ends: 65 [2020-10-24 14:16:58,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:16:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-24 14:16:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-24 14:16:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-24 14:16:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 64 transitions. [2020-10-24 14:16:58,628 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 64 transitions. Word has length 46 [2020-10-24 14:16:58,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:58,629 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 64 transitions. [2020-10-24 14:16:58,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:16:58,629 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 64 transitions. [2020-10-24 14:16:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-24 14:16:58,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:58,629 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] [2020-10-24 14:16:58,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-10-24 14:16:58,830 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]=== [2020-10-24 14:16:58,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:58,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2031963900, now seen corresponding path program 1 times [2020-10-24 14:16:58,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:58,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109782547] [2020-10-24 14:16:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:59,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:16:59,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:59,566 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-10-24 14:16:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:59,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:59,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109782547] [2020-10-24 14:16:59,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:59,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:16:59,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650297181] [2020-10-24 14:16:59,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:16:59,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:59,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:16:59,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:16:59,734 INFO L87 Difference]: Start difference. First operand 65 states and 64 transitions. Second operand 5 states. [2020-10-24 14:17:00,672 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-10-24 14:17:00,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:17:00,816 INFO L93 Difference]: Finished difference Result 65 states and 64 transitions. [2020-10-24 14:17:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:17:00,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-24 14:17:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:17:00,818 INFO L225 Difference]: With dead ends: 65 [2020-10-24 14:17:00,818 INFO L226 Difference]: Without dead ends: 63 [2020-10-24 14:17:00,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:17:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-24 14:17:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-24 14:17:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-24 14:17:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 62 transitions. [2020-10-24 14:17:00,821 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 62 transitions. Word has length 52 [2020-10-24 14:17:00,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:17:00,821 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 62 transitions. [2020-10-24 14:17:00,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:17:00,821 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 62 transitions. [2020-10-24 14:17:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-24 14:17:00,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:17:00,822 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] [2020-10-24 14:17:01,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-10-24 14:17:01,025 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]=== [2020-10-24 14:17:01,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:17:01,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1493006790, now seen corresponding path program 1 times [2020-10-24 14:17:01,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:17:01,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708753709] [2020-10-24 14:17:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:17:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:17:01,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-24 14:17:01,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:17:03,930 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-24 14:17:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:17:03,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:17:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:17:04,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708753709] [2020-10-24 14:17:04,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:17:04,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:17:04,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073482221] [2020-10-24 14:17:04,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:17:04,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:17:04,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:17:04,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:17:04,134 INFO L87 Difference]: Start difference. First operand 63 states and 62 transitions. Second operand 5 states. [2020-10-24 14:17:07,429 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 37 [2020-10-24 14:17:07,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:17:07,547 INFO L93 Difference]: Finished difference Result 63 states and 62 transitions. [2020-10-24 14:17:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:17:07,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-24 14:17:07,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:17:07,554 INFO L225 Difference]: With dead ends: 63 [2020-10-24 14:17:07,554 INFO L226 Difference]: Without dead ends: 61 [2020-10-24 14:17:07,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:17:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-24 14:17:07,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-24 14:17:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-24 14:17:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 60 transitions. [2020-10-24 14:17:07,556 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 60 transitions. Word has length 54 [2020-10-24 14:17:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:17:07,556 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 60 transitions. [2020-10-24 14:17:07,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:17:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 60 transitions. [2020-10-24 14:17:07,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-24 14:17:07,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:17:07,557 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] [2020-10-24 14:17:07,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-10-24 14:17:07,758 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]=== [2020-10-24 14:17:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:17:07,759 INFO L82 PathProgramCache]: Analyzing trace with hash 260643688, now seen corresponding path program 1 times [2020-10-24 14:17:07,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:17:07,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955862723] [2020-10-24 14:17:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:17:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:17:08,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:17:08,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:17:08,451 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-10-24 14:17:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:17:08,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:17:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:17:08,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955862723] [2020-10-24 14:17:08,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:17:08,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:17:08,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628779406] [2020-10-24 14:17:08,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:17:08,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:17:08,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:17:08,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:17:08,624 INFO L87 Difference]: Start difference. First operand 61 states and 60 transitions. Second operand 5 states. [2020-10-24 14:17:10,361 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-10-24 14:17:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:17:10,475 INFO L93 Difference]: Finished difference Result 61 states and 60 transitions. [2020-10-24 14:17:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:17:10,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-24 14:17:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:17:10,477 INFO L225 Difference]: With dead ends: 61 [2020-10-24 14:17:10,477 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 14:17:10,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:17:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 14:17:10,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-24 14:17:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-24 14:17:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 58 transitions. [2020-10-24 14:17:10,479 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 58 transitions. Word has length 56 [2020-10-24 14:17:10,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:17:10,479 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 58 transitions. [2020-10-24 14:17:10,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:17:10,480 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 58 transitions. [2020-10-24 14:17:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-24 14:17:10,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:17:10,480 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] [2020-10-24 14:17:10,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2020-10-24 14:17:10,681 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]=== [2020-10-24 14:17:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:17:10,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1370676714, now seen corresponding path program 1 times [2020-10-24 14:17:10,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:17:10,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025688922] [2020-10-24 14:17:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:17:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:17:11,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-24 14:17:11,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:17:13,577 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-24 14:17:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:17:13,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:17:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:17:13,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025688922] [2020-10-24 14:17:13,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:17:13,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:17:13,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206130074] [2020-10-24 14:17:13,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:17:13,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:17:13,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:17:13,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:17:13,752 INFO L87 Difference]: Start difference. First operand 59 states and 58 transitions. Second operand 5 states. [2020-10-24 14:17:17,560 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 37 [2020-10-24 14:17:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:17:17,561 INFO L93 Difference]: Finished difference Result 59 states and 58 transitions. [2020-10-24 14:17:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:17:17,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-24 14:17:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:17:17,561 INFO L225 Difference]: With dead ends: 59 [2020-10-24 14:17:17,562 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 14:17:17,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:17:17,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 14:17:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 14:17:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 14:17:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 14:17:17,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-10-24 14:17:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:17:17,563 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 14:17:17,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:17:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 14:17:17,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 14:17:17,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2020-10-24 14:17:17,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 14:17:17,770 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,771 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-6(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-7(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-8(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-9(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-10(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-11(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,772 INFO L274 CegarLoopResult]: For program point L3-12(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-13(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-14(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-15(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-16(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-17(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-18(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-19(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-20(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-21(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,773 INFO L274 CegarLoopResult]: For program point L3-22(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-23(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-24(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-25(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-26(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-27(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-28(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-29(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-30(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-31(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L4(lines 4 42) no Hoare annotation was computed. [2020-10-24 14:17:17,774 INFO L274 CegarLoopResult]: For program point L3-32(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-33(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-34(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-35(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-36(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-37(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-38(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-39(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-40(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,775 INFO L274 CegarLoopResult]: For program point L3-41(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,776 INFO L274 CegarLoopResult]: For program point L3-42(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,776 INFO L274 CegarLoopResult]: For program point L3-43(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,776 INFO L274 CegarLoopResult]: For program point L3-44(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,776 INFO L274 CegarLoopResult]: For program point L3-45(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,776 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-24 14:17:17,776 INFO L274 CegarLoopResult]: For program point L3-46(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,777 INFO L274 CegarLoopResult]: For program point L3-47(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,777 INFO L274 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-10-24 14:17:17,777 INFO L274 CegarLoopResult]: For program point L3-48(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,777 INFO L274 CegarLoopResult]: For program point L3-49(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,777 INFO L274 CegarLoopResult]: For program point L3-50(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,777 INFO L274 CegarLoopResult]: For program point L3-51(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,777 INFO L274 CegarLoopResult]: For program point L3-52(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point L3-53(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point L3-54(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point L3-55(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point L3-56(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point L3-57(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point L3-58(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point L3-59(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,778 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-10-24 14:17:17,779 INFO L274 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-10-24 14:17:17,779 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,779 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-24 14:17:17,779 INFO L274 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-10-24 14:17:17,779 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,779 INFO L274 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-10-24 14:17:17,780 INFO L274 CegarLoopResult]: For program point L39-2(line 39) no Hoare annotation was computed. [2020-10-24 14:17:17,780 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-24 14:17:17,780 INFO L274 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-10-24 14:17:17,780 INFO L274 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-10-24 14:17:17,780 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-24 14:17:17,780 INFO L274 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-10-24 14:17:17,780 INFO L274 CegarLoopResult]: For program point L7-2(line 7) no Hoare annotation was computed. [2020-10-24 14:17:17,781 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,781 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,781 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-10-24 14:17:17,781 INFO L274 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-10-24 14:17:17,781 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,781 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-10-24 14:17:17,782 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-24 14:17:17,782 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-10-24 14:17:17,782 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 14:17:17,782 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,782 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-24 14:17:17,782 INFO L274 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-10-24 14:17:17,783 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-24 14:17:17,784 INFO L274 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-10-24 14:17:17,785 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,785 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-10-24 14:17:17,785 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,785 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-10-24 14:17:17,785 INFO L274 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-10-24 14:17:17,785 INFO L274 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-10-24 14:17:17,785 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-24 14:17:17,785 INFO L274 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point L32-2(lines 5 42) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,786 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,787 INFO L274 CegarLoopResult]: For program point L33-1(lines 5 42) no Hoare annotation was computed. [2020-10-24 14:17:17,787 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,787 INFO L274 CegarLoopResult]: For program point L34-1(lines 5 42) no Hoare annotation was computed. [2020-10-24 14:17:17,787 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,787 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-24 14:17:17,787 INFO L274 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-10-24 14:17:17,788 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:17:17,788 INFO L274 CegarLoopResult]: For program point L35-1(lines 5 42) no Hoare annotation was computed. [2020-10-24 14:17:17,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:17:17 BoogieIcfgContainer [2020-10-24 14:17:17,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:17:17,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:17:17,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:17:17,796 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:17:17,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:01" (3/4) ... [2020-10-24 14:17:17,801 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 14:17:17,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-24 14:17:17,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 14:17:17,835 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-24 14:17:17,836 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 14:17:17,913 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 14:17:17,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:17:17,915 INFO L168 Benchmark]: Toolchain (without parser) took 78658.51 ms. Allocated memory was 41.9 MB in the beginning and 73.4 MB in the end (delta: 31.5 MB). Free memory was 28.4 MB in the beginning and 32.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-10-24 14:17:17,916 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory is still 22.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:17:17,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.28 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 27.8 MB in the beginning and 34.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:17:17,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.72 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 31.6 MB in the end (delta: 2.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:17:17,917 INFO L168 Benchmark]: Boogie Preprocessor took 104.79 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 29.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 14:17:17,918 INFO L168 Benchmark]: RCFGBuilder took 1132.53 ms. Allocated memory is still 50.3 MB. Free memory was 29.3 MB in the beginning and 29.9 MB in the end (delta: -596.9 kB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-10-24 14:17:17,918 INFO L168 Benchmark]: TraceAbstraction took 76754.59 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 29.5 MB in the beginning and 38.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-10-24 14:17:17,919 INFO L168 Benchmark]: Witness Printer took 118.19 ms. Allocated memory is still 73.4 MB. Free memory was 38.9 MB in the beginning and 32.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-24 14:17:17,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory is still 22.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 411.28 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 27.8 MB in the beginning and 34.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 121.72 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 31.6 MB in the end (delta: 2.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.79 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 29.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1132.53 ms. Allocated memory is still 50.3 MB. Free memory was 29.3 MB in the beginning and 29.9 MB in the end (delta: -596.9 kB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 76754.59 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 29.5 MB in the beginning and 38.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Witness Printer took 118.19 ms. Allocated memory is still 73.4 MB. Free memory was 38.9 MB in the beginning and 32.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 30 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 150 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 76.6s, OverallIterations: 26, TraceHistogramMax: 1, AutomataDifference: 42.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1880 SDtfs, 313 SDslu, 2572 SDs, 0 SdLazy, 594 SolverSat, 7 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 25.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1496 GetRequests, 1420 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred 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: 0.5s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 22.1s 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...