./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3 --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 fcc9cdbda1dfb552072e950db05ca157e6d0c3fd ......................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3 --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 fcc9cdbda1dfb552072e950db05ca157e6d0c3fd ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:07:14,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:07:14,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:07:14,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:07:14,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:07:14,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:07:14,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:07:14,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:07:14,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:07:14,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:07:14,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:07:14,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:07:14,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:07:14,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:07:14,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:07:14,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:07:14,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:07:14,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:07:14,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:07:14,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:07:14,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:07:14,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:07:14,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:07:14,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:07:14,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:07:14,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:07:14,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:07:14,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:07:14,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:07:14,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:07:14,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:07:14,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:07:14,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:07:14,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:07:14,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:07:14,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:07:14,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:07:14,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:07:14,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:07:14,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:07:14,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:07:14,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:07:14,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:07:14,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:07:14,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:07:14,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:07:14,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:07:14,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:07:14,457 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:07:14,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:07:14,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:07:14,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:07:14,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:07:14,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:07:14,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:07:14,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:07:14,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:07:14,460 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:07:14,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:07:14,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:07:14,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:07:14,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:07:14,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:07:14,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:07:14,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:07:14,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:07:14,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:07:14,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:07:14,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:07:14,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:07:14,464 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:07:14,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:07:14,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:07:14,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:07:14,465 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcc9cdbda1dfb552072e950db05ca157e6d0c3fd [2021-10-15 19:07:14,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:07:14,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:07:14,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:07:14,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:07:14,801 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:07:14,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-10-15 19:07:14,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data/a57ed8565/1662d9c4b5634835bf7e868b144f18e2/FLAGe6e9d2d40 [2021-10-15 19:07:15,352 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:07:15,353 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-10-15 19:07:15,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data/a57ed8565/1662d9c4b5634835bf7e868b144f18e2/FLAGe6e9d2d40 [2021-10-15 19:07:15,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data/a57ed8565/1662d9c4b5634835bf7e868b144f18e2 [2021-10-15 19:07:15,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:07:15,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:07:15,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:07:15,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:07:15,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:07:15,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:07:15" (1/1) ... [2021-10-15 19:07:15,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b762ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:15, skipping insertion in model container [2021-10-15 19:07:15,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:07:15" (1/1) ... [2021-10-15 19:07:15,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:07:15,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:07:16,364 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1694) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1408) 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.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2349) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:712) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2349) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2349) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1576) 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:1052) 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:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430) 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:3218) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2299) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:580) 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) [2021-10-15 19:07:16,369 INFO L168 Benchmark]: Toolchain (without parser) took 689.06 ms. Allocated memory is still 98.6 MB. Free memory was 55.8 MB in the beginning and 70.9 MB in the end (delta: -15.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:07:16,370 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 73.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:07:16,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.44 ms. Allocated memory is still 98.6 MB. Free memory was 55.6 MB in the beginning and 70.9 MB in the end (delta: -15.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:07:16,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 73.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.44 ms. Allocated memory is still 98.6 MB. Free memory was 55.6 MB in the beginning and 70.9 MB in the end (delta: -15.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:07:18,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:07:18,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:07:18,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:07:18,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:07:18,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:07:18,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:07:18,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:07:18,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:07:18,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:07:18,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:07:18,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:07:18,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:07:18,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:07:18,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:07:18,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:07:18,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:07:18,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:07:18,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:07:18,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:07:18,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:07:18,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:07:18,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:07:18,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:07:18,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:07:18,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:07:18,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:07:18,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:07:18,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:07:18,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:07:18,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:07:18,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:07:18,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:07:18,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:07:18,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:07:18,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:07:18,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:07:18,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:07:18,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:07:18,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:07:18,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:07:18,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:07:18,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:07:18,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:07:18,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:07:18,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:07:18,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:07:18,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:07:18,952 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:07:18,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:07:18,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:07:18,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:07:18,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:07:18,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:07:18,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:07:18,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:07:18,956 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:07:18,956 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:07:18,956 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:07:18,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:07:18,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:07:18,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:07:18,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:07:18,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:07:18,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:07:18,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:07:18,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:07:18,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:07:18,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:07:18,959 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:07:18,960 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:07:18,960 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:07:18,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:07:18,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:07:18,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:07:18,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:07:18,961 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcc9cdbda1dfb552072e950db05ca157e6d0c3fd [2021-10-15 19:07:19,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:07:19,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:07:19,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:07:19,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:07:19,362 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:07:19,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-10-15 19:07:19,435 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data/6df850350/3a0864d4a44644f9bc04489dedb72d12/FLAGe4408efc9 [2021-10-15 19:07:20,100 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:07:20,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-10-15 19:07:20,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data/6df850350/3a0864d4a44644f9bc04489dedb72d12/FLAGe4408efc9 [2021-10-15 19:07:20,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/data/6df850350/3a0864d4a44644f9bc04489dedb72d12 [2021-10-15 19:07:20,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:07:20,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:07:20,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:07:20,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:07:20,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:07:20,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:07:20" (1/1) ... [2021-10-15 19:07:20,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac676f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:20, skipping insertion in model container [2021-10-15 19:07:20,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:07:20" (1/1) ... [2021-10-15 19:07:20,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:07:20,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:07:21,048 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2021-10-15 19:07:21,057 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2021-10-15 19:07:21,061 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2021-10-15 19:07:21,064 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2021-10-15 19:07:21,066 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2021-10-15 19:07:21,068 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2021-10-15 19:07:21,069 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2021-10-15 19:07:21,070 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2021-10-15 19:07:21,071 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2021-10-15 19:07:21,072 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2021-10-15 19:07:21,074 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2021-10-15 19:07:21,075 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2021-10-15 19:07:21,081 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2021-10-15 19:07:21,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:07:21,103 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:07:21,144 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2021-10-15 19:07:21,152 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2021-10-15 19:07:21,156 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2021-10-15 19:07:21,165 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2021-10-15 19:07:21,166 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2021-10-15 19:07:21,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2021-10-15 19:07:21,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2021-10-15 19:07:21,175 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2021-10-15 19:07:21,176 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2021-10-15 19:07:21,178 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2021-10-15 19:07:21,181 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2021-10-15 19:07:21,182 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2021-10-15 19:07:21,188 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2021-10-15 19:07:21,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:07:21,357 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:07:21,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21 WrapperNode [2021-10-15 19:07:21,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:07:21,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:07:21,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:07:21,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:07:21,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:07:21,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:07:21,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:07:21,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:07:21,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:07:21,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:07:21,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:07:21,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:07:21,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (1/1) ... [2021-10-15 19:07:21,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:07:21,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:07:21,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:07:21,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:07:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:07:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:07:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:07:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:07:32,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:07:32,395 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-15 19:07:32,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:32 BoogieIcfgContainer [2021-10-15 19:07:32,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:07:32,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:07:32,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:07:32,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:07:32,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:07:20" (1/3) ... [2021-10-15 19:07:32,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3622aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:07:32, skipping insertion in model container [2021-10-15 19:07:32,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:21" (2/3) ... [2021-10-15 19:07:32,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3622aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:07:32, skipping insertion in model container [2021-10-15 19:07:32,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:32" (3/3) ... [2021-10-15 19:07:32,407 INFO L111 eAbstractionObserver]: Analyzing ICFG float21.i [2021-10-15 19:07:32,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:07:32,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-15 19:07:32,458 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:07:32,467 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, mConcurrency=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 [2021-10-15 19:07:32,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-15 19:07:32,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 66 transitions, 132 flow [2021-10-15 19:07:32,546 INFO L129 PetriNetUnfolder]: 16/66 cut-off events. [2021-10-15 19:07:32,549 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:32,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 66 events. 16/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:07:32,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 66 transitions, 132 flow [2021-10-15 19:07:32,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 61 transitions, 122 flow [2021-10-15 19:07:32,566 INFO L129 PetriNetUnfolder]: 1/5 cut-off events. [2021-10-15 19:07:32,567 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:32,567 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:32,568 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:07:32,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:07:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:32,597 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-15 19:07:32,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:07:32,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630183768] [2021-10-15 19:07:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:32,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:07:32,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:07:32,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:07:32,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:07:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:07:32,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:07:32,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:07:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:07:32,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:07:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:07:32,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:07:32,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630183768] [2021-10-15 19:07:32,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630183768] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:07:32,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:07:32,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-15 19:07:32,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492022030] [2021-10-15 19:07:33,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:07:33,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:07:33,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:07:33,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:07:33,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2021-10-15 19:07:33,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 61 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:33,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:07:33,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2021-10-15 19:07:33,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:07:38,236 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-10-15 19:07:38,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:38,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 42 events. 0/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 13/45 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2021-10-15 19:07:38,238 INFO L132 encePairwiseOnDemand]: 49/66 looper letters, 11 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2021-10-15 19:07:38,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 110 flow [2021-10-15 19:07:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:07:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:07:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2021-10-15 19:07:38,275 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6717171717171717 [2021-10-15 19:07:38,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2021-10-15 19:07:38,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2021-10-15 19:07:38,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:07:38,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2021-10-15 19:07:38,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:38,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:38,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:38,291 INFO L186 Difference]: Start difference. First operand has 47 places, 61 transitions, 122 flow. Second operand 3 states and 133 transitions. [2021-10-15 19:07:38,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 110 flow [2021-10-15 19:07:38,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:07:38,298 INFO L242 Difference]: Finished difference. Result has 45 places, 42 transitions, 88 flow [2021-10-15 19:07:38,300 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2021-10-15 19:07:38,301 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2021-10-15 19:07:38,301 INFO L470 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 88 flow [2021-10-15 19:07:38,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:38,302 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:38,302 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:07:38,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:07:38,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:07:38,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:07:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:38,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1808724044, now seen corresponding path program 1 times [2021-10-15 19:07:38,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:07:38,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578214648] [2021-10-15 19:07:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:38,535 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:07:38,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:07:38,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:07:38,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:07:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:07:38,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:07:38,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:07:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:07:40,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:07:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:07:41,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:07:41,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578214648] [2021-10-15 19:07:41,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578214648] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:07:41,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:07:41,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 19:07:41,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876538006] [2021-10-15 19:07:41,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:07:41,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:07:41,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:07:41,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:07:41,335 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2021-10-15 19:07:41,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 26.25) internal successors, (210), 8 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:41,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:07:41,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2021-10-15 19:07:41,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:07:47,755 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-10-15 19:07:47,756 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:07:47,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 40 events. 0/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2021-10-15 19:07:47,757 INFO L132 encePairwiseOnDemand]: 60/66 looper letters, 16 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2021-10-15 19:07:47,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 126 flow [2021-10-15 19:07:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:07:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:07:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2021-10-15 19:07:47,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2021-10-15 19:07:47,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 147 transitions. [2021-10-15 19:07:47,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 147 transitions. [2021-10-15 19:07:47,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:07:47,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 147 transitions. [2021-10-15 19:07:47,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:47,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:47,780 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:47,780 INFO L186 Difference]: Start difference. First operand has 45 places, 42 transitions, 88 flow. Second operand 5 states and 147 transitions. [2021-10-15 19:07:47,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 126 flow [2021-10-15 19:07:47,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:07:47,785 INFO L242 Difference]: Finished difference. Result has 45 places, 40 transitions, 90 flow [2021-10-15 19:07:47,785 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2021-10-15 19:07:47,786 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2021-10-15 19:07:47,787 INFO L470 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 90 flow [2021-10-15 19:07:47,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.25) internal successors, (210), 8 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:47,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:47,788 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:07:47,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-15 19:07:48,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:07:48,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:07:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:48,004 INFO L82 PathProgramCache]: Analyzing trace with hash 235874606, now seen corresponding path program 1 times [2021-10-15 19:07:48,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:07:48,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843818522] [2021-10-15 19:07:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:48,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:07:48,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:07:48,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:07:48,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:07:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:07:48,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:07:48,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:07:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:07:48,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:07:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:07:48,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:07:48,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843818522] [2021-10-15 19:07:48,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843818522] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:07:48,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:07:48,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-15 19:07:48,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981897411] [2021-10-15 19:07:48,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:07:48,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:07:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:07:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:07:48,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2021-10-15 19:07:48,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:48,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:07:48,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2021-10-15 19:07:48,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:07:54,838 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-10-15 19:07:54,838 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:07:54,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 36 events. 0/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-10-15 19:07:54,839 INFO L132 encePairwiseOnDemand]: 61/66 looper letters, 12 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2021-10-15 19:07:54,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 112 flow [2021-10-15 19:07:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:07:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:07:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2021-10-15 19:07:54,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2021-10-15 19:07:54,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2021-10-15 19:07:54,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2021-10-15 19:07:54,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:07:54,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2021-10-15 19:07:54,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:54,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:54,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:54,851 INFO L186 Difference]: Start difference. First operand has 45 places, 40 transitions, 90 flow. Second operand 3 states and 116 transitions. [2021-10-15 19:07:54,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 112 flow [2021-10-15 19:07:54,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:07:54,853 INFO L242 Difference]: Finished difference. Result has 39 places, 36 transitions, 78 flow [2021-10-15 19:07:54,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2021-10-15 19:07:54,854 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2021-10-15 19:07:54,854 INFO L470 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 78 flow [2021-10-15 19:07:54,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:07:54,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:54,855 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:07:54,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:07:55,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:07:55,074 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:07:55,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:55,075 INFO L82 PathProgramCache]: Analyzing trace with hash 377772985, now seen corresponding path program 1 times [2021-10-15 19:07:55,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:07:55,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290193219] [2021-10-15 19:07:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:55,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:07:55,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:07:55,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:07:55,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:07:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:07:55,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:07:55,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:07:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:07:56,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:11,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:11,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290193219] [2021-10-15 19:08:11,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290193219] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:11,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:11,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 19:08:11,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595495176] [2021-10-15 19:08:11,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:08:11,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:08:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:08:11,460 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 66 [2021-10-15 19:08:11,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 78 flow. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:11,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:11,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 66 [2021-10-15 19:08:11,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:23,109 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-10-15 19:08:23,109 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:23,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 34 events. 0/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2021-10-15 19:08:23,109 INFO L132 encePairwiseOnDemand]: 60/66 looper letters, 21 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2021-10-15 19:08:23,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 126 flow [2021-10-15 19:08:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:08:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:08:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2021-10-15 19:08:23,128 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2021-10-15 19:08:23,128 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 117 transitions. [2021-10-15 19:08:23,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 117 transitions. [2021-10-15 19:08:23,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:23,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 117 transitions. [2021-10-15 19:08:23,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,133 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,133 INFO L186 Difference]: Start difference. First operand has 39 places, 36 transitions, 78 flow. Second operand 5 states and 117 transitions. [2021-10-15 19:08:23,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 126 flow [2021-10-15 19:08:23,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:08:23,135 INFO L242 Difference]: Finished difference. Result has 39 places, 34 transitions, 78 flow [2021-10-15 19:08:23,136 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2021-10-15 19:08:23,136 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2021-10-15 19:08:23,136 INFO L470 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 78 flow [2021-10-15 19:08:23,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,136 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:23,136 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:08:23,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:08:23,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:23,338 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:08:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1173935240, now seen corresponding path program 1 times [2021-10-15 19:08:23,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:23,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626358304] [2021-10-15 19:08:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:23,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:23,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:23,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:23,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 19:08:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:23,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:08:23,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:23,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:23,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:23,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626358304] [2021-10-15 19:08:23,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626358304] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:23,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:23,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-15 19:08:23,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947920663] [2021-10-15 19:08:23,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:08:23,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:23,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:08:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:08:23,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2021-10-15 19:08:23,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:23,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2021-10-15 19:08:23,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:28,745 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-10-15 19:08:28,746 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:08:28,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 30 events. 0/30 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-10-15 19:08:28,746 INFO L132 encePairwiseOnDemand]: 63/66 looper letters, 16 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2021-10-15 19:08:28,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 104 flow [2021-10-15 19:08:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:08:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:08:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2021-10-15 19:08:28,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2021-10-15 19:08:28,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2021-10-15 19:08:28,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2021-10-15 19:08:28,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:28,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2021-10-15 19:08:28,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:28,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:28,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:28,758 INFO L186 Difference]: Start difference. First operand has 39 places, 34 transitions, 78 flow. Second operand 3 states and 94 transitions. [2021-10-15 19:08:28,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 104 flow [2021-10-15 19:08:28,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:08:28,760 INFO L242 Difference]: Finished difference. Result has 33 places, 30 transitions, 62 flow [2021-10-15 19:08:28,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2021-10-15 19:08:28,761 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -14 predicate places. [2021-10-15 19:08:28,761 INFO L470 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 62 flow [2021-10-15 19:08:28,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:28,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:28,761 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:08:28,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:08:28,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:28,977 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:08:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:28,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1424765088, now seen corresponding path program 1 times [2021-10-15 19:08:28,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:28,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662696414] [2021-10-15 19:08:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:28,978 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:28,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:28,979 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:28,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-15 19:08:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:29,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:08:29,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:29,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:32,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:32,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662696414] [2021-10-15 19:08:32,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662696414] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:32,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:32,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-15 19:08:32,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067065810] [2021-10-15 19:08:32,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:08:32,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:08:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:08:32,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2021-10-15 19:08:32,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:32,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:32,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2021-10-15 19:08:32,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:36,872 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-10-15 19:08:36,872 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:36,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2021-10-15 19:08:36,873 INFO L132 encePairwiseOnDemand]: 64/66 looper letters, 16 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2021-10-15 19:08:36,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 92 flow [2021-10-15 19:08:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:08:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:08:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2021-10-15 19:08:36,886 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2021-10-15 19:08:36,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 90 transitions. [2021-10-15 19:08:36,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 90 transitions. [2021-10-15 19:08:36,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:36,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 90 transitions. [2021-10-15 19:08:36,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:36,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:36,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:36,889 INFO L186 Difference]: Start difference. First operand has 33 places, 30 transitions, 62 flow. Second operand 3 states and 90 transitions. [2021-10-15 19:08:36,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 92 flow [2021-10-15 19:08:36,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:08:36,890 INFO L242 Difference]: Finished difference. Result has 32 places, 28 transitions, 59 flow [2021-10-15 19:08:36,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2021-10-15 19:08:36,891 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -15 predicate places. [2021-10-15 19:08:36,891 INFO L470 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 59 flow [2021-10-15 19:08:36,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:36,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:36,891 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:08:36,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:08:37,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:37,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:08:37,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:37,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1218048905, now seen corresponding path program 1 times [2021-10-15 19:08:37,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:37,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996387634] [2021-10-15 19:08:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:37,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:37,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:37,094 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:37,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-15 19:08:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:37,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:08:37,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:37,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:40,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:40,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996387634] [2021-10-15 19:08:40,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996387634] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:40,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:40,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-15 19:08:40,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417717734] [2021-10-15 19:08:40,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:08:40,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:08:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:08:40,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2021-10-15 19:08:40,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:40,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:40,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2021-10-15 19:08:40,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:45,535 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-10-15 19:08:45,536 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:45,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 26 events. 0/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2021-10-15 19:08:45,536 INFO L132 encePairwiseOnDemand]: 64/66 looper letters, 14 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2021-10-15 19:08:45,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 85 flow [2021-10-15 19:08:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:08:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:08:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2021-10-15 19:08:45,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2021-10-15 19:08:45,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2021-10-15 19:08:45,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2021-10-15 19:08:45,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:45,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2021-10-15 19:08:45,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:45,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:45,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:45,552 INFO L186 Difference]: Start difference. First operand has 32 places, 28 transitions, 59 flow. Second operand 3 states and 94 transitions. [2021-10-15 19:08:45,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 85 flow [2021-10-15 19:08:45,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:08:45,554 INFO L242 Difference]: Finished difference. Result has 31 places, 26 transitions, 56 flow [2021-10-15 19:08:45,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-10-15 19:08:45,554 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -16 predicate places. [2021-10-15 19:08:45,554 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 56 flow [2021-10-15 19:08:45,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:45,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:45,554 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:08:45,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-15 19:08:45,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:45,755 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:08:45,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:45,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1279638800, now seen corresponding path program 1 times [2021-10-15 19:08:45,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:45,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230507310] [2021-10-15 19:08:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:45,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:45,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:45,757 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:45,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-15 19:08:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:46,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:08:46,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:46,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:52,553 WARN L838 $PredicateComparison]: unable to prove that (fp.leq (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~smallestNormalFloat~0) c_ULTIMATE.start_main_~v~0) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~v~0 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~largestSubnormalFloat~0))) is different from false [2021-10-15 19:08:54,578 WARN L860 $PredicateComparison]: unable to prove that (fp.leq (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~smallestNormalFloat~0) c_ULTIMATE.start_main_~v~0) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~v~0 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~largestSubnormalFloat~0))) is different from true [2021-10-15 19:09:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:09:51,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:09:51,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230507310] [2021-10-15 19:09:51,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230507310] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:09:51,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:09:51,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 19:09:51,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315946396] [2021-10-15 19:09:51,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:09:51,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:09:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:09:51,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=6, Unknown=2, NotChecked=4, Total=20 [2021-10-15 19:09:51,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2021-10-15 19:09:51,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:09:51,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:09:51,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2021-10-15 19:09:51,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:09:53,355 WARN L860 $PredicateComparison]: unable to prove that (and (fp.leq (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~smallestNormalFloat~0) c_ULTIMATE.start_main_~v~0) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~v~0 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~largestSubnormalFloat~0))) (= c_ULTIMATE.start_main_~v~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 33554431.0 2854495385411919762116571938898990272765493248.0))) (= c_ULTIMATE.start_main_~largestSubnormalFloat~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 8388607.0 713623846352979940529142984724747568191373312.0))) (= c_ULTIMATE.start_main_~smallestNormalFloat~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-15 19:09:54,559 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-10-15 19:09:54,559 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:09:54,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-10-15 19:09:54,560 INFO L132 encePairwiseOnDemand]: 62/66 looper letters, 13 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-10-15 19:09:54,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 84 flow [2021-10-15 19:09:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:09:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:09:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2021-10-15 19:09:54,579 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2021-10-15 19:09:54,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 105 transitions. [2021-10-15 19:09:54,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 105 transitions. [2021-10-15 19:09:54,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:09:54,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 105 transitions. [2021-10-15 19:09:54,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:09:54,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:09:54,581 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:09:54,581 INFO L186 Difference]: Start difference. First operand has 31 places, 26 transitions, 56 flow. Second operand 4 states and 105 transitions. [2021-10-15 19:09:54,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 84 flow [2021-10-15 19:09:54,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 83 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:09:54,583 INFO L242 Difference]: Finished difference. Result has 31 places, 24 transitions, 57 flow [2021-10-15 19:09:54,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2021-10-15 19:09:54,584 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -16 predicate places. [2021-10-15 19:09:54,584 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 57 flow [2021-10-15 19:09:54,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:09:54,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:09:54,584 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:09:54,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-15 19:09:54,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:09:54,790 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:09:54,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:09:54,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1014092967, now seen corresponding path program 1 times [2021-10-15 19:09:54,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:09:54,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477296432] [2021-10-15 19:09:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:09:54,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:09:54,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:09:54,792 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:09:54,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-15 19:09:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:09:55,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:09:55,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:09:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:09:55,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:10:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:10:02,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:10:02,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477296432] [2021-10-15 19:10:02,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477296432] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:10:02,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:10:02,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 19:10:02,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324641940] [2021-10-15 19:10:02,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:10:02,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:10:02,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:10:02,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:10:02,385 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2021-10-15 19:10:02,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 57 flow. Second operand has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:10:02,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:10:02,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2021-10-15 19:10:02,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:10:06,837 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-10-15 19:10:06,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:10:06,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2021-10-15 19:10:06,838 INFO L132 encePairwiseOnDemand]: 63/66 looper letters, 11 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2021-10-15 19:10:06,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 79 flow [2021-10-15 19:10:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:10:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:10:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2021-10-15 19:10:06,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2021-10-15 19:10:06,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2021-10-15 19:10:06,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2021-10-15 19:10:06,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:10:06,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2021-10-15 19:10:06,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:10:06,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:10:06,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:10:06,862 INFO L186 Difference]: Start difference. First operand has 31 places, 24 transitions, 57 flow. Second operand 4 states and 118 transitions. [2021-10-15 19:10:06,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 79 flow [2021-10-15 19:10:06,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 73 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:10:06,864 INFO L242 Difference]: Finished difference. Result has 29 places, 22 transitions, 51 flow [2021-10-15 19:10:06,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=51, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2021-10-15 19:10:06,864 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -18 predicate places. [2021-10-15 19:10:06,864 INFO L470 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 51 flow [2021-10-15 19:10:06,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:10:06,865 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:10:06,865 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:10:06,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-15 19:10:07,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:10:07,066 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-15 19:10:07,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:10:07,066 INFO L82 PathProgramCache]: Analyzing trace with hash -39659491, now seen corresponding path program 1 times [2021-10-15 19:10:07,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:10:07,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829587594] [2021-10-15 19:10:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:10:07,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:10:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:10:07,068 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:10:07,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-15 19:10:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:10:07,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:10:07,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:10:19,088 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~f~0 (_ FloatingPoint 8 24))) (and (not (fp.eq ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ULTIMATE.start_main_~f~0)) ULTIMATE.start_main_~f~0)) (fp.isSubnormal ULTIMATE.start_main_~f~0))) is different from false [2021-10-15 19:10:21,101 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~f~0 (_ FloatingPoint 8 24))) (and (not (fp.eq ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ULTIMATE.start_main_~f~0)) ULTIMATE.start_main_~f~0)) (fp.isSubnormal ULTIMATE.start_main_~f~0))) is different from true [2021-10-15 19:10:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:10:21,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:10:44,941 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-15 19:11:03,952 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~f~0_36 (_ FloatingPoint 8 24))) (or (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode v_ULTIMATE.start_main_~f~0_36)) v_ULTIMATE.start_main_~f~0_36) (not (fp.isSubnormal v_ULTIMATE.start_main_~f~0_36)))) is different from false [2021-10-15 19:11:05,966 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~f~0_36 (_ FloatingPoint 8 24))) (or (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode v_ULTIMATE.start_main_~f~0_36)) v_ULTIMATE.start_main_~f~0_36) (not (fp.isSubnormal v_ULTIMATE.start_main_~f~0_36)))) is different from true [2021-10-15 19:12:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:12:41,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:12:41,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829587594] [2021-10-15 19:12:41,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829587594] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:12:41,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:12:41,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-15 19:12:41,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447843469] [2021-10-15 19:12:41,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-15 19:12:41,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:12:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-15 19:12:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=25, Unknown=7, NotChecked=22, Total=72 [2021-10-15 19:12:41,703 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2021-10-15 19:12:41,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 51 flow. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:12:41,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:12:41,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2021-10-15 19:12:41,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:12:44,261 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~f~0_36 (_ FloatingPoint 8 24))) (or (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode v_ULTIMATE.start_main_~f~0_36)) v_ULTIMATE.start_main_~f~0_36) (not (fp.isSubnormal v_ULTIMATE.start_main_~f~0_36)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-15 19:13:05,772 WARN L207 SmtUtils]: Spent 18.06 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-15 19:13:28,383 WARN L207 SmtUtils]: Spent 19.63 s on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2021-10-15 19:13:28,385 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-10-15 19:13:28,385 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:13:28,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-10-15 19:13:28,385 INFO L132 encePairwiseOnDemand]: 62/66 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-10-15 19:13:28,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 20 transitions, 81 flow [2021-10-15 19:13:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:13:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:13:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2021-10-15 19:13:28,387 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2021-10-15 19:13:28,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 128 transitions. [2021-10-15 19:13:28,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 128 transitions. [2021-10-15 19:13:28,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:13:28,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 128 transitions. [2021-10-15 19:13:28,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:13:28,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:13:28,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:13:28,389 INFO L186 Difference]: Start difference. First operand has 29 places, 22 transitions, 51 flow. Second operand 5 states and 128 transitions. [2021-10-15 19:13:28,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 20 transitions, 81 flow [2021-10-15 19:13:28,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 78 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:13:28,390 INFO L242 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-10-15 19:13:28,392 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-10-15 19:13:28,392 INFO L334 CegarLoopForPetriNet]: 47 programPoint places, -18 predicate places. [2021-10-15 19:13:28,393 INFO L470 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2021-10-15 19:13:28,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:13:28,398 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,399 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,399 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,400 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,403 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,403 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:28,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-15 19:13:28,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:13:28,616 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:13:28,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:13:28 BoogieIcfgContainer [2021-10-15 19:13:28,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:13:28,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:13:28,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:13:28,621 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:13:28,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:32" (3/4) ... [2021-10-15 19:13:28,624 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:13:28,635 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 19:13:28,635 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:13:28,636 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:13:28,636 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:13:28,689 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:13:28,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:13:28,691 INFO L168 Benchmark]: Toolchain (without parser) took 368347.47 ms. Allocated memory was 56.6 MB in the beginning and 111.1 MB in the end (delta: 54.5 MB). Free memory was 33.0 MB in the beginning and 72.6 MB in the end (delta: -39.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:28,692 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:13:28,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1012.64 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 32.8 MB in the beginning and 55.4 MB in the end (delta: -22.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:28,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.46 ms. Allocated memory is still 75.5 MB. Free memory was 55.4 MB in the beginning and 52.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:28,694 INFO L168 Benchmark]: Boogie Preprocessor took 30.91 ms. Allocated memory is still 75.5 MB. Free memory was 52.7 MB in the beginning and 51.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:28,694 INFO L168 Benchmark]: RCFGBuilder took 10951.26 ms. Allocated memory is still 75.5 MB. Free memory was 51.0 MB in the beginning and 39.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:28,695 INFO L168 Benchmark]: TraceAbstraction took 356220.32 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 39.5 MB in the beginning and 76.7 MB in the end (delta: -37.2 MB). Peak memory consumption was 359.4 kB. Max. memory is 16.1 GB. [2021-10-15 19:13:28,696 INFO L168 Benchmark]: Witness Printer took 69.75 ms. Allocated memory is still 111.1 MB. Free memory was 76.7 MB in the beginning and 72.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:28,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1012.64 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 32.8 MB in the beginning and 55.4 MB in the end (delta: -22.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.46 ms. Allocated memory is still 75.5 MB. Free memory was 55.4 MB in the beginning and 52.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.91 ms. Allocated memory is still 75.5 MB. Free memory was 52.7 MB in the beginning and 51.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10951.26 ms. Allocated memory is still 75.5 MB. Free memory was 51.0 MB in the beginning and 39.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 356220.32 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 39.5 MB in the beginning and 76.7 MB in the end (delta: -37.2 MB). Peak memory consumption was 359.4 kB. Max. memory is 16.1 GB. * Witness Printer took 69.75 ms. Allocated memory is still 111.1 MB. Free memory was 76.7 MB in the beginning and 72.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 384]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 387]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 388]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 392]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 393]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 394]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 395]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 396]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 397]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 398]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 399]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 402]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 356160.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 99739.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 95.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 35 SDtfs, 186 SDslu, 7 SDs, 0 SdLazy, 177 SolverSat, 3 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 50261.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 88770.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 64.4ms SsaConstructionTime, 1116.5ms SatisfiabilityAnalysisTime, 252171.9ms InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 240 ConstructedInterpolants, 46 QuantifiedInterpolants, 1932 SizeOfPredicates, 41 NumberOfNonLiveVariables, 354 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:13:28,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94fdaadb-505a-4c7a-903b-e055daa660c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...