./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0875.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0875.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 027149746a3758b07c50ff16b2dbdfe672cfd188ffc035544f53bfbbaccdb52e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:46:49,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:46:49,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:46:49,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:46:49,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:46:49,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:46:49,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:46:49,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:46:49,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:46:49,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:46:49,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:46:49,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:46:49,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:46:49,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:46:49,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:46:49,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:46:49,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:46:49,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:46:49,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:46:49,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:46:49,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:46:49,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:46:49,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:46:49,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:46:49,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:46:49,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:46:49,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:46:49,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:46:49,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:46:49,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:46:49,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:46:49,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:46:49,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:46:49,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:46:49,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:46:49,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:46:49,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:46:49,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:46:49,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:46:49,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:46:49,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:46:49,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:46:49,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:46:49,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:46:49,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:46:49,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:46:49,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:46:49,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:46:49,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:46:49,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:46:49,345 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:46:49,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:46:49,345 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:46:49,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:46:49,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:46:49,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:46:49,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:46:49,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:46:49,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:46:49,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:46:49,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:46:49,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:46:49,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:46:49,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:46:49,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:46:49,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:46:49,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:46:49,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:46:49,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:46:49,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:46:49,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:46:49,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:46:49,349 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:46:49,350 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:46:49,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:46:49,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:46:49,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 027149746a3758b07c50ff16b2dbdfe672cfd188ffc035544f53bfbbaccdb52e [2021-12-15 23:46:49,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:46:49,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:46:49,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:46:49,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:46:49,581 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:46:49,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0875.c [2021-12-15 23:46:49,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3870837e8/2ddba11ad8ef4cfdb995c618c453d4ce/FLAG791cc290a [2021-12-15 23:46:50,019 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:46:50,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0875.c [2021-12-15 23:46:50,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3870837e8/2ddba11ad8ef4cfdb995c618c453d4ce/FLAG791cc290a [2021-12-15 23:46:50,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3870837e8/2ddba11ad8ef4cfdb995c618c453d4ce [2021-12-15 23:46:50,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:46:50,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:46:50,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:46:50,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:46:50,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:46:50,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:50" (1/1) ... [2021-12-15 23:46:50,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d70117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:50, skipping insertion in model container [2021-12-15 23:46:50,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:50" (1/1) ... [2021-12-15 23:46:50,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:46:50,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:46:50,254 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:1784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$50(StandardFunctionHandler.java:415) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:235) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1434) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:539) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2021) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1633) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1069) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1069) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1456) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2342) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:595) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 23:46:50,259 INFO L158 Benchmark]: Toolchain (without parser) took 211.24ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 52.9MB in the beginning and 89.2MB in the end (delta: -36.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:46:50,259 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 31.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:46:50,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.54ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 52.6MB in the beginning and 89.2MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:46:50,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 31.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.54ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 52.6MB in the beginning and 89.2MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0875.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 027149746a3758b07c50ff16b2dbdfe672cfd188ffc035544f53bfbbaccdb52e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:46:51,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:46:51,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:46:51,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:46:51,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:46:51,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:46:51,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:46:51,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:46:51,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:46:51,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:46:51,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:46:51,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:46:51,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:46:51,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:46:51,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:46:51,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:46:51,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:46:51,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:46:51,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:46:51,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:46:51,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:46:51,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:46:51,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:46:51,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:46:51,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:46:51,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:46:51,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:46:51,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:46:51,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:46:51,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:46:51,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:46:51,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:46:51,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:46:51,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:46:51,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:46:51,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:46:51,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:46:51,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:46:51,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:46:51,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:46:51,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:46:51,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:46:51,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:46:51,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:46:51,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:46:51,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:46:51,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:46:51,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:46:51,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:46:51,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:46:51,809 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:46:51,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:46:51,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:46:51,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:46:51,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:46:51,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:46:51,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:46:51,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:46:51,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:46:51,811 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:46:51,811 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:46:51,811 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:46:51,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:46:51,811 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:46:51,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:46:51,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:46:51,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:46:51,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:46:51,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:46:51,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:46:51,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:46:51,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:46:51,812 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:46:51,813 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:46:51,813 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:46:51,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:46:51,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:46:51,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:46:51,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:46:51,814 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 027149746a3758b07c50ff16b2dbdfe672cfd188ffc035544f53bfbbaccdb52e [2021-12-15 23:46:52,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:46:52,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:46:52,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:46:52,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:46:52,092 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:46:52,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0875.c [2021-12-15 23:46:52,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba43da4bc/29531e082e1c47e48d124274c0a1d9c8/FLAG105f8d329 [2021-12-15 23:46:52,551 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:46:52,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0875.c [2021-12-15 23:46:52,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba43da4bc/29531e082e1c47e48d124274c0a1d9c8/FLAG105f8d329 [2021-12-15 23:46:52,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba43da4bc/29531e082e1c47e48d124274c0a1d9c8 [2021-12-15 23:46:52,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:46:52,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:46:52,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:46:52,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:46:52,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:46:52,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:52" (1/1) ... [2021-12-15 23:46:52,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a59975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:52, skipping insertion in model container [2021-12-15 23:46:52,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:52" (1/1) ... [2021-12-15 23:46:52,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:46:52,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:46:52,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0875.c[14084,14097] [2021-12-15 23:46:52,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:46:52,882 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:46:52,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0875.c[14084,14097] [2021-12-15 23:46:52,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:46:53,002 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:46:53,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53 WrapperNode [2021-12-15 23:46:53,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:46:53,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:46:53,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:46:53,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:46:53,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,085 INFO L137 Inliner]: procedures = 26, calls = 193, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 739 [2021-12-15 23:46:53,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:46:53,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:46:53,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:46:53,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:46:53,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:46:53,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:46:53,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:46:53,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:46:53,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (1/1) ... [2021-12-15 23:46:53,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:46:53,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:46:53,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 23:46:53,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 23:46:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:46:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:46:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:46:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-15 23:46:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-12-15 23:46:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-12-15 23:46:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 23:46:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-15 23:46:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-12-15 23:46:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-12-15 23:46:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-12-15 23:46:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:46:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:46:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 23:46:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:46:53,403 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:46:53,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:47:16,098 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:47:16,116 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:47:16,120 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-12-15 23:47:16,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:16 BoogieIcfgContainer [2021-12-15 23:47:16,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:47:16,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:47:16,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:47:16,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:47:16,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:46:52" (1/3) ... [2021-12-15 23:47:16,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bafd5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:16, skipping insertion in model container [2021-12-15 23:47:16,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:53" (2/3) ... [2021-12-15 23:47:16,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bafd5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:16, skipping insertion in model container [2021-12-15 23:47:16,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:16" (3/3) ... [2021-12-15 23:47:16,130 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0875.c [2021-12-15 23:47:16,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:47:16,135 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:47:16,166 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:47:16,171 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:47:16,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:47:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 191 states have (on average 1.7172774869109948) internal successors, (328), 192 states have internal predecessors, (328), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:47:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 23:47:16,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:47:16,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:47:16,190 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:47:16,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:47:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash 703028076, now seen corresponding path program 1 times [2021-12-15 23:47:16,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:47:16,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451416367] [2021-12-15 23:47:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:47:16,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:47:16,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:47:16,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:47:16,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:47:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:47:16,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 23:47:16,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:47:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:47:17,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:47:17,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:47:17,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451416367] [2021-12-15 23:47:17,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451416367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:47:17,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:47:17,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:47:17,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755476751] [2021-12-15 23:47:17,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:47:17,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:47:17,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:47:17,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:47:17,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:47:17,105 INFO L87 Difference]: Start difference. First operand has 200 states, 191 states have (on average 1.7172774869109948) internal successors, (328), 192 states have internal predecessors, (328), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:47:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:47:17,145 INFO L93 Difference]: Finished difference Result 397 states and 677 transitions. [2021-12-15 23:47:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:47:17,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-15 23:47:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:47:17,156 INFO L225 Difference]: With dead ends: 397 [2021-12-15 23:47:17,157 INFO L226 Difference]: Without dead ends: 196 [2021-12-15 23:47:17,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:47:17,175 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:47:17,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:47:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-15 23:47:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-12-15 23:47:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 188 states have (on average 1.3297872340425532) internal successors, (250), 188 states have internal predecessors, (250), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:47:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2021-12-15 23:47:17,215 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 18 [2021-12-15 23:47:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:47:17,216 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2021-12-15 23:47:17,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:47:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2021-12-15 23:47:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 23:47:17,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:47:17,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:47:17,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 23:47:17,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:47:17,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:47:17,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:47:17,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1530787270, now seen corresponding path program 1 times [2021-12-15 23:47:17,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:47:17,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780348721] [2021-12-15 23:47:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:47:17,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:47:17,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:47:17,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:47:17,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 23:47:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:47:18,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 23:47:18,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:47:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:47:18,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:47:18,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:47:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780348721] [2021-12-15 23:47:18,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780348721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:47:18,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:47:18,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 23:47:18,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264563600] [2021-12-15 23:47:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:47:18,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 23:47:18,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:47:18,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 23:47:18,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:47:18,921 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:47:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:47:18,939 INFO L93 Difference]: Finished difference Result 205 states and 269 transitions. [2021-12-15 23:47:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 23:47:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-15 23:47:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:47:18,940 INFO L225 Difference]: With dead ends: 205 [2021-12-15 23:47:18,940 INFO L226 Difference]: Without dead ends: 196 [2021-12-15 23:47:18,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:47:18,942 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:47:18,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1236 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2021-12-15 23:47:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-15 23:47:18,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-12-15 23:47:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 188 states have (on average 1.324468085106383) internal successors, (249), 188 states have internal predecessors, (249), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:47:18,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 259 transitions. [2021-12-15 23:47:18,953 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 259 transitions. Word has length 22 [2021-12-15 23:47:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:47:18,954 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 259 transitions. [2021-12-15 23:47:18,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:47:18,955 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 259 transitions. [2021-12-15 23:47:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:47:18,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:47:18,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:47:18,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 23:47:19,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:47:19,156 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:47:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:47:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash 459364139, now seen corresponding path program 1 times [2021-12-15 23:47:19,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:47:19,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377275813] [2021-12-15 23:47:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:47:19,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:47:19,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:47:19,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:47:19,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 23:47:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:47:19,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-15 23:47:19,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:47:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:47:20,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:47:20,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:47:20,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377275813] [2021-12-15 23:47:20,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377275813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:47:20,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:47:20,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 23:47:20,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058508087] [2021-12-15 23:47:20,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:47:20,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 23:47:20,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:47:20,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 23:47:20,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:47:20,947 INFO L87 Difference]: Start difference. First operand 196 states and 259 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:47:23,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:47:23,935 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions. [2021-12-15 23:47:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 23:47:23,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-15 23:47:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:47:23,937 INFO L225 Difference]: With dead ends: 214 [2021-12-15 23:47:23,937 INFO L226 Difference]: Without dead ends: 205 [2021-12-15 23:47:23,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:47:23,939 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 10 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:47:23,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1450 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 1 Unknown, 42 Unchecked, 3.0s Time] [2021-12-15 23:47:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-15 23:47:23,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 196. [2021-12-15 23:47:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 188 states have (on average 1.3191489361702127) internal successors, (248), 188 states have internal predecessors, (248), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:47:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-12-15 23:47:23,949 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 24 [2021-12-15 23:47:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:47:23,950 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-12-15 23:47:23,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:47:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-12-15 23:47:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:47:23,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:47:23,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:47:23,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 23:47:24,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:47:24,168 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:47:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:47:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash 461211181, now seen corresponding path program 1 times [2021-12-15 23:47:24,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:47:24,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811476442] [2021-12-15 23:47:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:47:24,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:47:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:47:24,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:47:24,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 23:47:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:47:24,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-15 23:47:24,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:47:25,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 23:47:25,580 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-12-15 23:47:25,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 30 [2021-12-15 23:47:27,758 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-15 23:47:27,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 35 [2021-12-15 23:47:28,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-12-15 23:47:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:47:30,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:47:30,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:47:30,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811476442] [2021-12-15 23:47:30,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811476442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:47:30,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:47:30,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-15 23:47:30,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064831053] [2021-12-15 23:47:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:47:30,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 23:47:30,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:47:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 23:47:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-15 23:47:30,381 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:47:34,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:37,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:40,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:42,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:45,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:47,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:48,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:50,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:53,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:54,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:56,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 23:47:58,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:01,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:48:04,296 INFO L93 Difference]: Finished difference Result 205 states and 267 transitions. [2021-12-15 23:48:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 23:48:04,308 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-15 23:48:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:48:04,309 INFO L225 Difference]: With dead ends: 205 [2021-12-15 23:48:04,309 INFO L226 Difference]: Without dead ends: 195 [2021-12-15 23:48:04,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-15 23:48:04,310 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 2 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 284 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2021-12-15 23:48:04,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2132 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 9 Unknown, 284 Unchecked, 33.7s Time] [2021-12-15 23:48:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-15 23:48:04,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-15 23:48:04,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 187 states have (on average 1.3155080213903743) internal successors, (246), 187 states have internal predecessors, (246), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:48:04,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2021-12-15 23:48:04,317 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 24 [2021-12-15 23:48:04,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:48:04,318 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2021-12-15 23:48:04,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:48:04,318 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2021-12-15 23:48:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 23:48:04,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:04,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:04,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-15 23:48:04,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:48:04,523 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:04,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:04,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1729146785, now seen corresponding path program 1 times [2021-12-15 23:48:04,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:48:04,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016901248] [2021-12-15 23:48:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:04,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:48:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:48:04,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:48:04,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 23:48:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:05,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-15 23:48:05,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:48:05,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 23:48:05,841 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-12-15 23:48:05,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 30 [2021-12-15 23:48:07,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17