./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN --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 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:10:04,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:04,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:04,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:04,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:04,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:04,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:04,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:04,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:04,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:04,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:04,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:04,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:04,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:04,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:04,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:04,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:04,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:04,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:04,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:04,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:04,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:04,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:04,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:04,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:04,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:04,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:04,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:04,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:04,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:04,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:04,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:04,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:04,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:04,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:04,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:04,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:04,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:04,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:04,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:04,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:04,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:10:04,496 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:04,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:04,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:04,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:04,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:04,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:04,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:04,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:04,502 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:04,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:04,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:04,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:04,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:04,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:04,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:04,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:04,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:04,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:04,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:04,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:04,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:04,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:04,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:04,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:04,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:04,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:10:04,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:10:04,507 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:04,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:04,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:04,508 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_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-11-20 12:10:04,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:04,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:04,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:04,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:04,849 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:04,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-11-20 12:10:07,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:08,607 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:08,608 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-11-20 12:10:08,651 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/data/93d431bf7/88706959d5254abcb56c86b9d4b19441/FLAGa9a6ec0d3 [2022-11-20 12:10:08,673 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/data/93d431bf7/88706959d5254abcb56c86b9d4b19441 [2022-11-20 12:10:08,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:08,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:08,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:08,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:08,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:08,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:08" (1/1) ... [2022-11-20 12:10:08,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a985b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:08, skipping insertion in model container [2022-11-20 12:10:08,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:08" (1/1) ... [2022-11-20 12:10:08,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:08,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:09,335 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) 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:2446) 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:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) 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:2446) 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.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) 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:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) 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) [2022-11-20 12:10:09,346 INFO L158 Benchmark]: Toolchain (without parser) took 667.53ms. Allocated memory is still 161.5MB. Free memory was 119.6MB in the beginning and 79.0MB in the end (delta: 40.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-20 12:10:09,347 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory was 51.4MB in the beginning and 51.3MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:10:09,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 663.75ms. Allocated memory is still 161.5MB. Free memory was 119.6MB in the beginning and 79.0MB in the end (delta: 40.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-20 12:10:09,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory was 51.4MB in the beginning and 51.3MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 663.75ms. Allocated memory is still 161.5MB. Free memory was 119.6MB in the beginning and 79.0MB in the end (delta: 40.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN --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 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:10:11,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:11,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:11,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:11,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:11,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:11,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:11,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:11,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:11,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:11,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:11,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:11,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:11,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:11,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:11,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:11,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:11,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:11,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:11,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:11,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:11,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:11,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:11,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:11,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:11,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:11,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:11,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:11,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:11,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:11,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:11,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:11,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:11,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:11,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:11,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:11,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:11,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:11,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:11,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:11,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:11,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:10:11,852 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:11,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:11,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:11,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:11,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:11,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:11,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:11,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:11,856 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:11,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:11,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:11,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:11,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:11,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:11,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:10:11,858 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:10:11,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:10:11,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:11,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:11,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:11,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:11,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:11,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:11,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:11,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:11,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:11,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:11,861 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:10:11,861 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:10:11,861 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:11,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:11,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:11,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:10:11,862 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_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-11-20 12:10:12,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:12,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:12,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:12,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:12,305 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:12,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-11-20 12:10:15,571 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:16,073 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:16,074 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-11-20 12:10:16,117 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/data/d98ec3f0e/513906f08f29480a9d81a8a404df5378/FLAG813226b53 [2022-11-20 12:10:16,146 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/data/d98ec3f0e/513906f08f29480a9d81a8a404df5378 [2022-11-20 12:10:16,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:16,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:16,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:16,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:16,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:16,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:16" (1/1) ... [2022-11-20 12:10:16,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0f0a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:16, skipping insertion in model container [2022-11-20 12:10:16,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:16" (1/1) ... [2022-11-20 12:10:16,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:16,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:17,600 WARN L237 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_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-11-20 12:10:17,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:17,732 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:10:17,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:18,087 WARN L237 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_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-11-20 12:10:18,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:18,143 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:10:18,397 WARN L237 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_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-11-20 12:10:18,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:18,538 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:10:18,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18 WrapperNode [2022-11-20 12:10:18,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:18,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:18,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:10:18,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:10:18,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,701 INFO L138 Inliner]: procedures = 206, calls = 1013, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2435 [2022-11-20 12:10:18,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:18,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:10:18,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:10:18,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:10:18,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:10:18,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:10:18,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:10:18,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:10:18,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:18,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:18,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:10:18,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:10:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:10:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:10:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 12:10:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:10:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2022-11-20 12:10:18,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2022-11-20 12:10:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-20 12:10:18,959 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-20 12:10:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:10:18,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:10:18,960 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2022-11-20 12:10:18,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2022-11-20 12:10:18,960 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-20 12:10:18,960 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-20 12:10:18,960 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 12:10:18,960 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 12:10:18,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:10:18,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:10:18,961 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 12:10:18,961 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 12:10:18,961 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2022-11-20 12:10:18,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2022-11-20 12:10:18,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:10:18,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:10:18,962 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2022-11-20 12:10:18,962 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2022-11-20 12:10:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:10:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:10:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:10:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:10:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-20 12:10:18,964 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-20 12:10:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2022-11-20 12:10:18,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2022-11-20 12:10:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:10:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 12:10:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:10:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:10:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 12:10:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 12:10:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 12:10:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2022-11-20 12:10:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2022-11-20 12:10:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2022-11-20 12:10:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2022-11-20 12:10:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-20 12:10:18,967 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-20 12:10:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2022-11-20 12:10:18,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2022-11-20 12:10:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-20 12:10:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-20 12:10:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2022-11-20 12:10:18,969 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2022-11-20 12:10:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2022-11-20 12:10:18,970 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2022-11-20 12:10:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-20 12:10:18,970 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-20 12:10:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2022-11-20 12:10:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2022-11-20 12:10:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 12:10:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 12:10:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2022-11-20 12:10:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2022-11-20 12:10:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 12:10:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 12:10:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2022-11-20 12:10:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2022-11-20 12:10:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:10:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:10:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-20 12:10:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-20 12:10:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-20 12:10:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-20 12:10:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:10:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:10:18,974 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2022-11-20 12:10:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2022-11-20 12:10:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2022-11-20 12:10:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2022-11-20 12:10:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:10:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-20 12:10:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-20 12:10:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:10:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2022-11-20 12:10:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2022-11-20 12:10:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2022-11-20 12:10:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2022-11-20 12:10:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2022-11-20 12:10:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2022-11-20 12:10:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:10:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2022-11-20 12:10:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2022-11-20 12:10:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2022-11-20 12:10:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2022-11-20 12:10:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2022-11-20 12:10:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2022-11-20 12:10:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2022-11-20 12:10:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2022-11-20 12:10:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:10:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:10:19,607 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:10:19,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:10:43,655 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:10:43,667 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:10:43,667 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:10:43,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:43 BoogieIcfgContainer [2022-11-20 12:10:43,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:10:43,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:10:43,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:10:43,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:10:43,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:16" (1/3) ... [2022-11-20 12:10:43,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524df1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:43, skipping insertion in model container [2022-11-20 12:10:43,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18" (2/3) ... [2022-11-20 12:10:43,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524df1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:43, skipping insertion in model container [2022-11-20 12:10:43,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:43" (3/3) ... [2022-11-20 12:10:43,679 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-11-20 12:10:43,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:10:43,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:10:43,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:10:43,775 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bc002a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:10:43,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:10:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2022-11-20 12:10:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:10:43,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:43,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:43,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:10:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:43,804 INFO L85 PathProgramCache]: Analyzing trace with hash -750438681, now seen corresponding path program 1 times [2022-11-20 12:10:43,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:43,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997192801] [2022-11-20 12:10:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:43,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:43,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:43,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:10:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:45,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:10:45,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:45,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:45,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:45,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997192801] [2022-11-20 12:10:45,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997192801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:45,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:45,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:45,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980336376] [2022-11-20 12:10:45,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:45,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:45,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:45,545 INFO L87 Difference]: Start difference. First operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:47,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:48,216 INFO L93 Difference]: Finished difference Result 2070 states and 3094 transitions. [2022-11-20 12:10:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 12:10:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:48,255 INFO L225 Difference]: With dead ends: 2070 [2022-11-20 12:10:48,255 INFO L226 Difference]: Without dead ends: 1369 [2022-11-20 12:10:48,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:48,274 INFO L413 NwaCegarLoop]: 1121 mSDtfsCounter, 971 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:48,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2119 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 12:10:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-11-20 12:10:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1365. [2022-11-20 12:10:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.451552210724365) internal successors, (1543), 1091 states have internal predecessors, (1543), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-11-20 12:10:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1986 transitions. [2022-11-20 12:10:48,452 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1986 transitions. Word has length 22 [2022-11-20 12:10:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:48,452 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1986 transitions. [2022-11-20 12:10:48,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1986 transitions. [2022-11-20 12:10:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:10:48,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:48,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:48,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:48,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:48,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:10:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash 577706747, now seen corresponding path program 1 times [2022-11-20 12:10:48,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:48,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017376857] [2022-11-20 12:10:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:48,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:48,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:48,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:10:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:50,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:10:50,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:50,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:50,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:50,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017376857] [2022-11-20 12:10:50,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017376857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:50,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:50,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:50,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483849660] [2022-11-20 12:10:50,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:50,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:50,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:50,058 INFO L87 Difference]: Start difference. First operand 1365 states and 1986 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:50,378 INFO L93 Difference]: Finished difference Result 1391 states and 2018 transitions. [2022-11-20 12:10:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:50,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:10:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:50,393 INFO L225 Difference]: With dead ends: 1391 [2022-11-20 12:10:50,393 INFO L226 Difference]: Without dead ends: 1378 [2022-11-20 12:10:50,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:50,400 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 1003 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:50,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1039 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:10:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-11-20 12:10:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1365. [2022-11-20 12:10:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.4506114769520226) internal successors, (1542), 1091 states have internal predecessors, (1542), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-11-20 12:10:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1985 transitions. [2022-11-20 12:10:50,522 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1985 transitions. Word has length 25 [2022-11-20 12:10:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:50,523 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1985 transitions. [2022-11-20 12:10:50,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1985 transitions. [2022-11-20 12:10:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:10:50,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:50,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:50,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:50,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:50,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:10:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 634965049, now seen corresponding path program 1 times [2022-11-20 12:10:50,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:50,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463416920] [2022-11-20 12:10:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:50,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:50,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:50,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:50,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:10:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:52,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:10:52,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:52,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:52,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:52,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463416920] [2022-11-20 12:10:52,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463416920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:52,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:52,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521976953] [2022-11-20 12:10:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:52,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:52,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:52,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:52,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:52,460 INFO L87 Difference]: Start difference. First operand 1365 states and 1985 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:54,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:54,818 INFO L93 Difference]: Finished difference Result 1367 states and 1986 transitions. [2022-11-20 12:10:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:54,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:10:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:54,827 INFO L225 Difference]: With dead ends: 1367 [2022-11-20 12:10:54,827 INFO L226 Difference]: Without dead ends: 1364 [2022-11-20 12:10:54,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:54,829 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 984 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:54,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1005 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 12:10:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-11-20 12:10:54,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-11-20 12:10:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1063 states have (on average 1.4496707431796803) internal successors, (1541), 1090 states have internal predecessors, (1541), 224 states have call successors, (224), 77 states have call predecessors, (224), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-11-20 12:10:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1983 transitions. [2022-11-20 12:10:54,936 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1983 transitions. Word has length 25 [2022-11-20 12:10:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:54,937 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 1983 transitions. [2022-11-20 12:10:54,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1983 transitions. [2022-11-20 12:10:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:10:54,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:54,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:54,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:55,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:10:55,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1791173724, now seen corresponding path program 1 times [2022-11-20 12:10:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:55,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880156169] [2022-11-20 12:10:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:55,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:55,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:55,168 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:55,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:10:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:56,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:10:56,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:56,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:56,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:56,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880156169] [2022-11-20 12:10:56,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880156169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:56,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:56,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269169960] [2022-11-20 12:10:56,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:56,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:56,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:56,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:56,948 INFO L87 Difference]: Start difference. First operand 1364 states and 1983 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:59,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:59,386 INFO L93 Difference]: Finished difference Result 1366 states and 1984 transitions. [2022-11-20 12:10:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:10:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:59,394 INFO L225 Difference]: With dead ends: 1366 [2022-11-20 12:10:59,394 INFO L226 Difference]: Without dead ends: 1363 [2022-11-20 12:10:59,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:59,396 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:59,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1003 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 12:10:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-11-20 12:10:59,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2022-11-20 12:10:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1063 states have (on average 1.4487300094073376) internal successors, (1540), 1089 states have internal predecessors, (1540), 223 states have call successors, (223), 77 states have call predecessors, (223), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-11-20 12:10:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1981 transitions. [2022-11-20 12:10:59,500 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1981 transitions. Word has length 26 [2022-11-20 12:10:59,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:59,501 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1981 transitions. [2022-11-20 12:10:59,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1981 transitions. [2022-11-20 12:10:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 12:10:59,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:59,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:59,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:59,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:59,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:10:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash 307940508, now seen corresponding path program 1 times [2022-11-20 12:10:59,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:59,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569202610] [2022-11-20 12:10:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:59,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:59,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:59,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:59,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:11:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:00,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:11:00,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:01,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:01,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:01,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569202610] [2022-11-20 12:11:01,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569202610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:01,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:01,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596703619] [2022-11-20 12:11:01,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:01,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:01,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:01,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:01,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:01,491 INFO L87 Difference]: Start difference. First operand 1363 states and 1981 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:03,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:03,812 INFO L93 Difference]: Finished difference Result 1365 states and 1982 transitions. [2022-11-20 12:11:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:03,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 12:11:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:03,821 INFO L225 Difference]: With dead ends: 1365 [2022-11-20 12:11:03,821 INFO L226 Difference]: Without dead ends: 1362 [2022-11-20 12:11:03,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:03,829 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:03,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1001 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 12:11:03,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-11-20 12:11:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2022-11-20 12:11:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1063 states have (on average 1.4477892756349953) internal successors, (1539), 1088 states have internal predecessors, (1539), 222 states have call successors, (222), 77 states have call predecessors, (222), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-11-20 12:11:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1979 transitions. [2022-11-20 12:11:03,946 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1979 transitions. Word has length 27 [2022-11-20 12:11:03,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:03,947 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1979 transitions. [2022-11-20 12:11:03,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1979 transitions. [2022-11-20 12:11:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 12:11:03,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:03,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:03,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:04,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:04,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:04,176 INFO L85 PathProgramCache]: Analyzing trace with hash 955977127, now seen corresponding path program 1 times [2022-11-20 12:11:04,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:04,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562125884] [2022-11-20 12:11:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:04,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:04,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:04,179 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:04,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:11:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:05,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:11:05,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:05,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:05,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:05,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562125884] [2022-11-20 12:11:05,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562125884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:05,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:05,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:05,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935739733] [2022-11-20 12:11:05,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:05,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:05,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:05,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:05,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:05,990 INFO L87 Difference]: Start difference. First operand 1362 states and 1979 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:08,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:08,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:08,394 INFO L93 Difference]: Finished difference Result 1364 states and 1980 transitions. [2022-11-20 12:11:08,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:08,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 12:11:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:08,404 INFO L225 Difference]: With dead ends: 1364 [2022-11-20 12:11:08,404 INFO L226 Difference]: Without dead ends: 1361 [2022-11-20 12:11:08,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:08,408 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 975 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:08,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 999 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 12:11:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-11-20 12:11:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-11-20 12:11:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1063 states have (on average 1.4468485418626529) internal successors, (1538), 1087 states have internal predecessors, (1538), 221 states have call successors, (221), 77 states have call predecessors, (221), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-11-20 12:11:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1977 transitions. [2022-11-20 12:11:08,532 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1977 transitions. Word has length 28 [2022-11-20 12:11:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:08,533 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1977 transitions. [2022-11-20 12:11:08,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1977 transitions. [2022-11-20 12:11:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 12:11:08,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:08,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:08,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:08,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:08,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash -429719297, now seen corresponding path program 1 times [2022-11-20 12:11:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267626665] [2022-11-20 12:11:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:08,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:08,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:08,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:08,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:11:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:10,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:11:10,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:10,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:10,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:10,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267626665] [2022-11-20 12:11:10,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267626665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:10,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:10,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758864817] [2022-11-20 12:11:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:10,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:10,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:10,759 INFO L87 Difference]: Start difference. First operand 1361 states and 1977 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:12,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:13,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:13,328 INFO L93 Difference]: Finished difference Result 3323 states and 4738 transitions. [2022-11-20 12:11:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:13,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-20 12:11:13,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:13,340 INFO L225 Difference]: With dead ends: 3323 [2022-11-20 12:11:13,340 INFO L226 Difference]: Without dead ends: 1957 [2022-11-20 12:11:13,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:13,346 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 941 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:13,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1473 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 12:11:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2022-11-20 12:11:13,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1951. [2022-11-20 12:11:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1486 states have (on average 1.3909825033647376) internal successors, (2067), 1518 states have internal predecessors, (2067), 330 states have call successors, (330), 135 states have call predecessors, (330), 134 states have return successors, (334), 321 states have call predecessors, (334), 328 states have call successors, (334) [2022-11-20 12:11:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2731 transitions. [2022-11-20 12:11:13,609 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2731 transitions. Word has length 29 [2022-11-20 12:11:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:13,610 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 2731 transitions. [2022-11-20 12:11:13,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2731 transitions. [2022-11-20 12:11:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-20 12:11:13,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:13,626 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:13,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:13,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:13,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash -278866688, now seen corresponding path program 1 times [2022-11-20 12:11:13,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:13,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866360796] [2022-11-20 12:11:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:13,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:13,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:13,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:13,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:11:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:16,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:11:16,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-20 12:11:16,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:16,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:16,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866360796] [2022-11-20 12:11:16,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866360796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:16,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:16,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:16,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145007466] [2022-11-20 12:11:16,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:16,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:16,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:16,980 INFO L87 Difference]: Start difference. First operand 1951 states and 2731 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 12:11:17,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:17,683 INFO L93 Difference]: Finished difference Result 4599 states and 6524 transitions. [2022-11-20 12:11:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:17,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 207 [2022-11-20 12:11:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:17,697 INFO L225 Difference]: With dead ends: 4599 [2022-11-20 12:11:17,697 INFO L226 Difference]: Without dead ends: 2651 [2022-11-20 12:11:17,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:17,704 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 527 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:17,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2005 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:11:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-11-20 12:11:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2651. [2022-11-20 12:11:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2068 states have (on average 1.4361702127659575) internal successors, (2970), 2102 states have internal predecessors, (2970), 410 states have call successors, (410), 173 states have call predecessors, (410), 172 states have return successors, (414), 401 states have call predecessors, (414), 408 states have call successors, (414) [2022-11-20 12:11:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3794 transitions. [2022-11-20 12:11:17,975 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3794 transitions. Word has length 207 [2022-11-20 12:11:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:17,975 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3794 transitions. [2022-11-20 12:11:17,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 12:11:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3794 transitions. [2022-11-20 12:11:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 12:11:17,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:17,987 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:18,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:18,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:18,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:18,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:18,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1362685847, now seen corresponding path program 1 times [2022-11-20 12:11:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:18,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229996914] [2022-11-20 12:11:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:18,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:18,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:18,212 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:18,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:11:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:21,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:11:21,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-20 12:11:21,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:21,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:21,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229996914] [2022-11-20 12:11:21,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229996914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:21,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:21,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:11:21,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867923340] [2022-11-20 12:11:21,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:21,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:11:21,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:21,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:11:21,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:11:21,429 INFO L87 Difference]: Start difference. First operand 2651 states and 3794 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:11:21,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:21,981 INFO L93 Difference]: Finished difference Result 5315 states and 7623 transitions. [2022-11-20 12:11:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:11:21,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 225 [2022-11-20 12:11:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:21,997 INFO L225 Difference]: With dead ends: 5315 [2022-11-20 12:11:21,997 INFO L226 Difference]: Without dead ends: 2667 [2022-11-20 12:11:22,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:22,008 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 5 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:22,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2957 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:11:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-11-20 12:11:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2663. [2022-11-20 12:11:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2078 states have (on average 1.4340712223291627) internal successors, (2980), 2114 states have internal predecessors, (2980), 410 states have call successors, (410), 173 states have call predecessors, (410), 174 states have return successors, (416), 401 states have call predecessors, (416), 408 states have call successors, (416) [2022-11-20 12:11:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3806 transitions. [2022-11-20 12:11:22,317 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3806 transitions. Word has length 225 [2022-11-20 12:11:22,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:22,318 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3806 transitions. [2022-11-20 12:11:22,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:11:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3806 transitions. [2022-11-20 12:11:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 12:11:22,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:22,330 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:22,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:22,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:22,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:22,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:22,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1370684821, now seen corresponding path program 1 times [2022-11-20 12:11:22,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:22,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074137034] [2022-11-20 12:11:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:22,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:22,548 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:22,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:11:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:25,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:11:25,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-20 12:11:27,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:27,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:27,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074137034] [2022-11-20 12:11:27,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074137034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:27,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:27,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:11:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652044194] [2022-11-20 12:11:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:27,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:11:27,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:11:27,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:11:27,571 INFO L87 Difference]: Start difference. First operand 2663 states and 3806 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:11:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:29,646 INFO L93 Difference]: Finished difference Result 5371 states and 7707 transitions. [2022-11-20 12:11:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:11:29,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 225 [2022-11-20 12:11:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:29,662 INFO L225 Difference]: With dead ends: 5371 [2022-11-20 12:11:29,662 INFO L226 Difference]: Without dead ends: 2711 [2022-11-20 12:11:29,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:11:29,672 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 7 mSDsluCounter, 6881 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7868 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:29,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7868 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:11:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-11-20 12:11:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-11-20 12:11:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2106 states have (on average 1.4283000949667617) internal successors, (3008), 2142 states have internal predecessors, (3008), 410 states have call successors, (410), 173 states have call predecessors, (410), 182 states have return successors, (452), 409 states have call predecessors, (452), 408 states have call successors, (452) [2022-11-20 12:11:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3870 transitions. [2022-11-20 12:11:29,953 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3870 transitions. Word has length 225 [2022-11-20 12:11:29,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:29,954 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3870 transitions. [2022-11-20 12:11:29,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:11:29,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3870 transitions. [2022-11-20 12:11:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-20 12:11:29,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:29,966 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:30,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:30,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:30,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:30,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1261399318, now seen corresponding path program 1 times [2022-11-20 12:11:30,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:30,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27704890] [2022-11-20 12:11:30,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:30,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:30,192 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:30,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:11:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:33,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:11:33,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-20 12:11:33,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:33,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:33,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27704890] [2022-11-20 12:11:33,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27704890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:33,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:33,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:11:33,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327564446] [2022-11-20 12:11:33,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:33,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:11:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:33,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:11:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:11:33,716 INFO L87 Difference]: Start difference. First operand 2699 states and 3870 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:11:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:34,761 INFO L93 Difference]: Finished difference Result 5419 states and 7787 transitions. [2022-11-20 12:11:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:11:34,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 228 [2022-11-20 12:11:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:34,777 INFO L225 Difference]: With dead ends: 5419 [2022-11-20 12:11:34,778 INFO L226 Difference]: Without dead ends: 2723 [2022-11-20 12:11:34,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:34,793 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:34,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:11:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-11-20 12:11:35,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2711. [2022-11-20 12:11:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2116 states have (on average 1.4262759924385633) internal successors, (3018), 2152 states have internal predecessors, (3018), 412 states have call successors, (412), 173 states have call predecessors, (412), 182 states have return successors, (454), 411 states have call predecessors, (454), 410 states have call successors, (454) [2022-11-20 12:11:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3884 transitions. [2022-11-20 12:11:35,056 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3884 transitions. Word has length 228 [2022-11-20 12:11:35,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:35,057 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3884 transitions. [2022-11-20 12:11:35,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:11:35,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3884 transitions. [2022-11-20 12:11:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-20 12:11:35,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:35,069 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:35,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:35,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:35,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1945602355, now seen corresponding path program 1 times [2022-11-20 12:11:35,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:35,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284983268] [2022-11-20 12:11:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:35,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:35,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:35,288 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:11:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:38,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:11:38,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-20 12:11:39,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:39,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:39,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284983268] [2022-11-20 12:11:39,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284983268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:39,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:39,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:11:39,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869099745] [2022-11-20 12:11:39,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:39,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:39,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:39,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:39,494 INFO L87 Difference]: Start difference. First operand 2711 states and 3884 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:11:41,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:42,125 INFO L93 Difference]: Finished difference Result 5459 states and 7831 transitions. [2022-11-20 12:11:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:42,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 238 [2022-11-20 12:11:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:42,141 INFO L225 Difference]: With dead ends: 5459 [2022-11-20 12:11:42,142 INFO L226 Difference]: Without dead ends: 2751 [2022-11-20 12:11:42,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:11:42,152 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 6 mSDsluCounter, 3946 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4936 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:42,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4936 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 12:11:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2022-11-20 12:11:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2723. [2022-11-20 12:11:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2128 states have (on average 1.4238721804511278) internal successors, (3030), 2160 states have internal predecessors, (3030), 412 states have call successors, (412), 173 states have call predecessors, (412), 182 states have return successors, (454), 415 states have call predecessors, (454), 410 states have call successors, (454) [2022-11-20 12:11:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3896 transitions. [2022-11-20 12:11:42,461 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3896 transitions. Word has length 238 [2022-11-20 12:11:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:42,461 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3896 transitions. [2022-11-20 12:11:42,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:11:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3896 transitions. [2022-11-20 12:11:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:11:42,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:42,473 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:42,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:42,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:42,695 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:42,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash 332974640, now seen corresponding path program 2 times [2022-11-20 12:11:42,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638212569] [2022-11-20 12:11:42,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:42,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:42,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:42,698 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:42,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 12:11:44,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:11:44,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:44,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:11:44,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-20 12:11:45,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:45,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:45,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638212569] [2022-11-20 12:11:45,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638212569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:45,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:45,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:45,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858315521] [2022-11-20 12:11:45,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:45,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:45,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:45,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:45,012 INFO L87 Difference]: Start difference. First operand 2723 states and 3896 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:11:47,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:47,503 INFO L93 Difference]: Finished difference Result 3548 states and 4926 transitions. [2022-11-20 12:11:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:47,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 241 [2022-11-20 12:11:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:47,527 INFO L225 Difference]: With dead ends: 3548 [2022-11-20 12:11:47,528 INFO L226 Difference]: Without dead ends: 2711 [2022-11-20 12:11:47,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:47,532 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 403 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:47,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2301 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 12:11:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-11-20 12:11:47,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-11-20 12:11:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2112 states have (on average 1.4247159090909092) internal successors, (3009), 2142 states have internal predecessors, (3009), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-11-20 12:11:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-11-20 12:11:47,800 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 241 [2022-11-20 12:11:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:47,801 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-11-20 12:11:47,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:11:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-11-20 12:11:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-20 12:11:47,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:47,820 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:47,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:48,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:48,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2084236656, now seen corresponding path program 1 times [2022-11-20 12:11:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:48,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661288210] [2022-11-20 12:11:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:48,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:48,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:48,037 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:48,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:11:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:52,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 4866 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:11:52,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-11-20 12:11:53,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:53,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:53,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661288210] [2022-11-20 12:11:53,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661288210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:53,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:53,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244223835] [2022-11-20 12:11:53,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:53,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:53,447 INFO L87 Difference]: Start difference. First operand 2699 states and 3859 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 12:11:55,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:55,411 INFO L93 Difference]: Finished difference Result 5443 states and 7785 transitions. [2022-11-20 12:11:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:11:55,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 440 [2022-11-20 12:11:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:55,432 INFO L225 Difference]: With dead ends: 5443 [2022-11-20 12:11:55,432 INFO L226 Difference]: Without dead ends: 2747 [2022-11-20 12:11:55,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:55,440 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 20 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:55,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3927 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:11:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2022-11-20 12:11:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2699. [2022-11-20 12:11:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2112 states have (on average 1.4247159090909092) internal successors, (3009), 2142 states have internal predecessors, (3009), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-11-20 12:11:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-11-20 12:11:55,706 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 440 [2022-11-20 12:11:55,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:55,706 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-11-20 12:11:55,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 12:11:55,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-11-20 12:11:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-20 12:11:55,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:55,725 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:55,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-20 12:11:55,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:55,947 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash 735862630, now seen corresponding path program 1 times [2022-11-20 12:11:55,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:55,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943100251] [2022-11-20 12:11:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:55,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:55,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:55,953 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:55,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 12:12:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:01,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 4878 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:12:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-11-20 12:12:01,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:01,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:01,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943100251] [2022-11-20 12:12:01,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943100251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:01,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:01,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:12:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514200489] [2022-11-20 12:12:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:01,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:12:01,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:01,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:12:01,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:12:01,470 INFO L87 Difference]: Start difference. First operand 2699 states and 3859 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:12:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:02,258 INFO L93 Difference]: Finished difference Result 5423 states and 7765 transitions. [2022-11-20 12:12:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:12:02,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 440 [2022-11-20 12:12:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:02,269 INFO L225 Difference]: With dead ends: 5423 [2022-11-20 12:12:02,269 INFO L226 Difference]: Without dead ends: 2727 [2022-11-20 12:12:02,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:12:02,279 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 7 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:02,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:12:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2022-11-20 12:12:02,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2707. [2022-11-20 12:12:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2120 states have (on average 1.4231132075471697) internal successors, (3017), 2150 states have internal predecessors, (3017), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-11-20 12:12:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3867 transitions. [2022-11-20 12:12:02,606 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3867 transitions. Word has length 440 [2022-11-20 12:12:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:02,607 INFO L495 AbstractCegarLoop]: Abstraction has 2707 states and 3867 transitions. [2022-11-20 12:12:02,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:12:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3867 transitions. [2022-11-20 12:12:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-20 12:12:02,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:02,623 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:02,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:02,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:02,839 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1782441170, now seen corresponding path program 1 times [2022-11-20 12:12:02,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:02,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869300556] [2022-11-20 12:12:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:02,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:02,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:02,843 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:02,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 12:12:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:08,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 5054 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:12:08,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-11-20 12:12:09,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:09,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:09,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869300556] [2022-11-20 12:12:09,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869300556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:09,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:09,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:12:09,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23405097] [2022-11-20 12:12:09,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:09,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:12:09,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:12:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:12:09,185 INFO L87 Difference]: Start difference. First operand 2707 states and 3867 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:12:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:10,031 INFO L93 Difference]: Finished difference Result 5459 states and 7801 transitions. [2022-11-20 12:12:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:12:10,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 486 [2022-11-20 12:12:10,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:10,043 INFO L225 Difference]: With dead ends: 5459 [2022-11-20 12:12:10,043 INFO L226 Difference]: Without dead ends: 2755 [2022-11-20 12:12:10,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:12:10,052 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 7 mSDsluCounter, 3948 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:10,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4939 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:12:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-11-20 12:12:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2719. [2022-11-20 12:12:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2132 states have (on average 1.420731707317073) internal successors, (3029), 2158 states have internal predecessors, (3029), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 414 states have call predecessors, (442), 406 states have call successors, (442) [2022-11-20 12:12:10,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3879 transitions. [2022-11-20 12:12:10,379 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3879 transitions. Word has length 486 [2022-11-20 12:12:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:10,380 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3879 transitions. [2022-11-20 12:12:10,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:12:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3879 transitions. [2022-11-20 12:12:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-20 12:12:10,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:10,393 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:10,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:10,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:10,607 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1213120962, now seen corresponding path program 2 times [2022-11-20 12:12:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:10,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405847424] [2022-11-20 12:12:10,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:10,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:10,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:10,613 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:10,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 12:12:17,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:12:17,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:17,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 5088 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:12:17,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-11-20 12:12:18,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:18,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:18,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405847424] [2022-11-20 12:12:18,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405847424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:18,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:18,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:12:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142933487] [2022-11-20 12:12:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:18,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:12:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:12:18,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:12:18,770 INFO L87 Difference]: Start difference. First operand 2719 states and 3879 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:12:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:19,585 INFO L93 Difference]: Finished difference Result 5491 states and 7837 transitions. [2022-11-20 12:12:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:12:19,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 492 [2022-11-20 12:12:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:19,597 INFO L225 Difference]: With dead ends: 5491 [2022-11-20 12:12:19,598 INFO L226 Difference]: Without dead ends: 2775 [2022-11-20 12:12:19,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:12:19,606 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 6 mSDsluCounter, 4951 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:19,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5946 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:12:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-11-20 12:12:19,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2739. [2022-11-20 12:12:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2148 states have (on average 1.4175977653631284) internal successors, (3045), 2170 states have internal predecessors, (3045), 408 states have call successors, (408), 172 states have call predecessors, (408), 182 states have return successors, (450), 422 states have call predecessors, (450), 406 states have call successors, (450) [2022-11-20 12:12:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3903 transitions. [2022-11-20 12:12:19,865 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3903 transitions. Word has length 492 [2022-11-20 12:12:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:19,866 INFO L495 AbstractCegarLoop]: Abstraction has 2739 states and 3903 transitions. [2022-11-20 12:12:19,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:12:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3903 transitions. [2022-11-20 12:12:19,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-11-20 12:12:19,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:19,878 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:19,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:20,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:20,079 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:20,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1711081881, now seen corresponding path program 3 times [2022-11-20 12:12:20,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:20,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523675023] [2022-11-20 12:12:20,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:12:20,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:20,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:20,085 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:20,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 12:12:24,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:12:24,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:24,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:12:24,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-20 12:12:25,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:25,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:25,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523675023] [2022-11-20 12:12:25,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523675023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:25,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:25,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:12:25,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015065291] [2022-11-20 12:12:25,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:25,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:12:25,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:25,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:12:25,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:12:25,258 INFO L87 Difference]: Start difference. First operand 2739 states and 3903 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:12:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:25,985 INFO L93 Difference]: Finished difference Result 5503 states and 7899 transitions. [2022-11-20 12:12:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:12:25,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 501 [2022-11-20 12:12:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:25,997 INFO L225 Difference]: With dead ends: 5503 [2022-11-20 12:12:25,997 INFO L226 Difference]: Without dead ends: 2767 [2022-11-20 12:12:26,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:12:26,005 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 2 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:26,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3924 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:12:26,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2022-11-20 12:12:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2755. [2022-11-20 12:12:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2160 states have (on average 1.4152777777777779) internal successors, (3057), 2182 states have internal predecessors, (3057), 408 states have call successors, (408), 172 states have call predecessors, (408), 186 states have return successors, (496), 426 states have call predecessors, (496), 406 states have call successors, (496) [2022-11-20 12:12:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3961 transitions. [2022-11-20 12:12:26,322 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3961 transitions. Word has length 501 [2022-11-20 12:12:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:26,325 INFO L495 AbstractCegarLoop]: Abstraction has 2755 states and 3961 transitions. [2022-11-20 12:12:26,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:12:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3961 transitions. [2022-11-20 12:12:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-11-20 12:12:26,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:26,338 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:26,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:26,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:26,551 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash 577896194, now seen corresponding path program 1 times [2022-11-20 12:12:26,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:26,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243343450] [2022-11-20 12:12:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:26,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:26,557 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:26,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 12:12:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:33,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 5864 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:12:33,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2022-11-20 12:12:34,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:34,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:34,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243343450] [2022-11-20 12:12:34,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243343450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:34,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:34,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:12:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697159877] [2022-11-20 12:12:34,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:34,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:12:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:34,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:12:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:12:34,981 INFO L87 Difference]: Start difference. First operand 2755 states and 3961 transitions. Second operand has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 12:12:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:35,754 INFO L93 Difference]: Finished difference Result 5551 states and 7985 transitions. [2022-11-20 12:12:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:12:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) Word has length 556 [2022-11-20 12:12:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:35,765 INFO L225 Difference]: With dead ends: 5551 [2022-11-20 12:12:35,765 INFO L226 Difference]: Without dead ends: 2799 [2022-11-20 12:12:35,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:12:35,773 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 6 mSDsluCounter, 4951 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:35,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5946 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:12:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-11-20 12:12:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2763. [2022-11-20 12:12:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2168 states have (on average 1.4137453874538746) internal successors, (3065), 2186 states have internal predecessors, (3065), 408 states have call successors, (408), 172 states have call predecessors, (408), 186 states have return successors, (496), 430 states have call predecessors, (496), 406 states have call successors, (496) [2022-11-20 12:12:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3969 transitions. [2022-11-20 12:12:36,037 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3969 transitions. Word has length 556 [2022-11-20 12:12:36,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:36,038 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3969 transitions. [2022-11-20 12:12:36,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 12:12:36,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3969 transitions. [2022-11-20 12:12:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-11-20 12:12:36,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:36,058 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:36,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:36,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:36,283 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:36,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1327618987, now seen corresponding path program 2 times [2022-11-20 12:12:36,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:36,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253637119] [2022-11-20 12:12:36,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:36,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:36,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:36,289 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:36,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 12:12:39,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:12:39,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:39,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:12:39,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2022-11-20 12:12:39,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:39,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:39,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253637119] [2022-11-20 12:12:39,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253637119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:39,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:39,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:12:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930213519] [2022-11-20 12:12:39,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:39,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:12:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:12:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:12:39,701 INFO L87 Difference]: Start difference. First operand 2763 states and 3969 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:12:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:40,163 INFO L93 Difference]: Finished difference Result 5559 states and 8159 transitions. [2022-11-20 12:12:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:12:40,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 559 [2022-11-20 12:12:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:40,176 INFO L225 Difference]: With dead ends: 5559 [2022-11-20 12:12:40,176 INFO L226 Difference]: Without dead ends: 2799 [2022-11-20 12:12:40,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:12:40,184 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:40,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:12:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-11-20 12:12:40,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2787. [2022-11-20 12:12:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2186 states have (on average 1.4103385178408052) internal successors, (3083), 2204 states have internal predecessors, (3083), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 436 states have call predecessors, (514), 406 states have call successors, (514) [2022-11-20 12:12:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4005 transitions. [2022-11-20 12:12:40,498 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4005 transitions. Word has length 559 [2022-11-20 12:12:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:40,502 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4005 transitions. [2022-11-20 12:12:40,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:12:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4005 transitions. [2022-11-20 12:12:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-11-20 12:12:40,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:40,519 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:40,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:40,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:40,743 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash 776342615, now seen corresponding path program 1 times [2022-11-20 12:12:40,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:40,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191626415] [2022-11-20 12:12:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:40,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:40,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:40,750 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:40,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 12:12:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:48,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 5881 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:12:48,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2022-11-20 12:12:48,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:48,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:48,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191626415] [2022-11-20 12:12:48,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191626415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:48,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:48,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:12:48,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261427480] [2022-11-20 12:12:48,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:48,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:12:48,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:12:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:12:48,366 INFO L87 Difference]: Start difference. First operand 2787 states and 4005 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 12:12:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:48,985 INFO L93 Difference]: Finished difference Result 5603 states and 8065 transitions. [2022-11-20 12:12:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:12:48,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 559 [2022-11-20 12:12:48,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:49,002 INFO L225 Difference]: With dead ends: 5603 [2022-11-20 12:12:49,002 INFO L226 Difference]: Without dead ends: 2819 [2022-11-20 12:12:49,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:12:49,010 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:49,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2956 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:12:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2022-11-20 12:12:49,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2795. [2022-11-20 12:12:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 2194 states have (on average 1.4088422971741112) internal successors, (3091), 2212 states have internal predecessors, (3091), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 436 states have call predecessors, (514), 406 states have call successors, (514) [2022-11-20 12:12:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4013 transitions. [2022-11-20 12:12:49,383 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4013 transitions. Word has length 559 [2022-11-20 12:12:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:49,383 INFO L495 AbstractCegarLoop]: Abstraction has 2795 states and 4013 transitions. [2022-11-20 12:12:49,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 12:12:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4013 transitions. [2022-11-20 12:12:49,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-11-20 12:12:49,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:49,395 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:49,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:49,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:49,619 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1716624338, now seen corresponding path program 1 times [2022-11-20 12:12:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:49,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742978374] [2022-11-20 12:12:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:49,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:49,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:49,624 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:49,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 12:12:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:57,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 5992 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:12:57,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2022-11-20 12:12:59,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:59,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:59,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742978374] [2022-11-20 12:12:59,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742978374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:59,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:59,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:12:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851791024] [2022-11-20 12:12:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:59,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:12:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:12:59,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:12:59,704 INFO L87 Difference]: Start difference. First operand 2795 states and 4013 transitions. Second operand has 10 states, 10 states have (on average 20.3) internal successors, (203), 8 states have internal predecessors, (203), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 12:13:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:02,171 INFO L93 Difference]: Finished difference Result 5635 states and 8097 transitions. [2022-11-20 12:13:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:13:02,172 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.3) internal successors, (203), 8 states have internal predecessors, (203), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 570 [2022-11-20 12:13:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:02,185 INFO L225 Difference]: With dead ends: 5635 [2022-11-20 12:13:02,185 INFO L226 Difference]: Without dead ends: 2843 [2022-11-20 12:13:02,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:13:02,195 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 16 mSDsluCounter, 7935 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8932 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:02,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8932 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:13:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2022-11-20 12:13:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2807. [2022-11-20 12:13:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2206 states have (on average 1.4066183136899366) internal successors, (3103), 2220 states have internal predecessors, (3103), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-11-20 12:13:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4025 transitions. [2022-11-20 12:13:02,485 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4025 transitions. Word has length 570 [2022-11-20 12:13:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:02,486 INFO L495 AbstractCegarLoop]: Abstraction has 2807 states and 4025 transitions. [2022-11-20 12:13:02,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.3) internal successors, (203), 8 states have internal predecessors, (203), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 12:13:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4025 transitions. [2022-11-20 12:13:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-11-20 12:13:02,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:02,498 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:02,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:02,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:02,713 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash -625586725, now seen corresponding path program 2 times [2022-11-20 12:13:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:02,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095134304] [2022-11-20 12:13:02,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:02,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:02,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:02,720 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:02,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 12:13:05,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:13:05,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:05,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:13:05,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2022-11-20 12:13:06,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:06,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:06,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095134304] [2022-11-20 12:13:06,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095134304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:06,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:06,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450857627] [2022-11-20 12:13:06,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:06,024 INFO L87 Difference]: Start difference. First operand 2807 states and 4025 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 12:13:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:06,294 INFO L93 Difference]: Finished difference Result 5615 states and 8067 transitions. [2022-11-20 12:13:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:06,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 573 [2022-11-20 12:13:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:06,306 INFO L225 Difference]: With dead ends: 5615 [2022-11-20 12:13:06,307 INFO L226 Difference]: Without dead ends: 2811 [2022-11-20 12:13:06,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:06,314 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:06,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1970 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:13:06,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-11-20 12:13:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2811. [2022-11-20 12:13:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4058823529411764) internal successors, (3107), 2224 states have internal predecessors, (3107), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-11-20 12:13:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4029 transitions. [2022-11-20 12:13:06,596 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4029 transitions. Word has length 573 [2022-11-20 12:13:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:06,597 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4029 transitions. [2022-11-20 12:13:06,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 12:13:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4029 transitions. [2022-11-20 12:13:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-11-20 12:13:06,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:06,608 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:06,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:06,827 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1290265901, now seen corresponding path program 1 times [2022-11-20 12:13:06,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:06,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364319874] [2022-11-20 12:13:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:06,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:06,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:06,834 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:06,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 12:13:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:14,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 6031 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:13:14,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-11-20 12:13:15,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:15,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364319874] [2022-11-20 12:13:15,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364319874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:15,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:15,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:13:15,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380336817] [2022-11-20 12:13:15,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:15,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:13:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:13:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:13:15,176 INFO L87 Difference]: Start difference. First operand 2811 states and 4029 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 12:13:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:16,336 INFO L93 Difference]: Finished difference Result 5683 states and 8157 transitions. [2022-11-20 12:13:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:13:16,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 575 [2022-11-20 12:13:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:16,344 INFO L225 Difference]: With dead ends: 5683 [2022-11-20 12:13:16,345 INFO L226 Difference]: Without dead ends: 2875 [2022-11-20 12:13:16,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:13:16,351 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 18 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3955 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:16,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3955 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:13:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-11-20 12:13:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2811. [2022-11-20 12:13:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4058823529411764) internal successors, (3107), 2224 states have internal predecessors, (3107), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-11-20 12:13:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4029 transitions. [2022-11-20 12:13:16,696 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4029 transitions. Word has length 575 [2022-11-20 12:13:16,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:16,697 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4029 transitions. [2022-11-20 12:13:16,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 12:13:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4029 transitions. [2022-11-20 12:13:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-11-20 12:13:16,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:16,709 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:16,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-20 12:13:16,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:16,923 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:16,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1466773769, now seen corresponding path program 1 times [2022-11-20 12:13:16,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:16,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107525235] [2022-11-20 12:13:16,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:16,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:16,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:16,928 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:16,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 12:13:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:24,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 6053 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:13:25,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2022-11-20 12:13:25,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:25,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:25,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107525235] [2022-11-20 12:13:25,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107525235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:25,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:25,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609752127] [2022-11-20 12:13:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:25,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:25,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:25,110 INFO L87 Difference]: Start difference. First operand 2811 states and 4029 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 12:13:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:25,667 INFO L93 Difference]: Finished difference Result 5747 states and 8269 transitions. [2022-11-20 12:13:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:25,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 575 [2022-11-20 12:13:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:25,678 INFO L225 Difference]: With dead ends: 5747 [2022-11-20 12:13:25,679 INFO L226 Difference]: Without dead ends: 2939 [2022-11-20 12:13:25,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:25,686 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 27 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:25,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1963 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:13:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-11-20 12:13:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2819. [2022-11-20 12:13:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2218 states have (on average 1.4044183949504059) internal successors, (3115), 2232 states have internal predecessors, (3115), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-11-20 12:13:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4037 transitions. [2022-11-20 12:13:25,970 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4037 transitions. Word has length 575 [2022-11-20 12:13:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:25,972 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4037 transitions. [2022-11-20 12:13:25,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 12:13:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4037 transitions. [2022-11-20 12:13:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-11-20 12:13:25,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:25,985 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:26,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:26,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:26,202 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:26,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:26,203 INFO L85 PathProgramCache]: Analyzing trace with hash -408299781, now seen corresponding path program 1 times [2022-11-20 12:13:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:26,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550990955] [2022-11-20 12:13:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:26,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:26,209 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:26,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 12:13:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:34,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 6103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:13:34,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 481 proven. 1 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-11-20 12:13:34,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-11-20 12:13:35,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:35,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550990955] [2022-11-20 12:13:35,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550990955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:35,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:35,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:13:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572560552] [2022-11-20 12:13:35,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:13:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:13:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:13:35,538 INFO L87 Difference]: Start difference. First operand 2819 states and 4037 transitions. Second operand has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-11-20 12:13:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:37,055 INFO L93 Difference]: Finished difference Result 5891 states and 8489 transitions. [2022-11-20 12:13:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:13:37,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 593 [2022-11-20 12:13:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:37,064 INFO L225 Difference]: With dead ends: 5891 [2022-11-20 12:13:37,064 INFO L226 Difference]: Without dead ends: 3075 [2022-11-20 12:13:37,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:13:37,070 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 177 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:37,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 2997 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:13:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2022-11-20 12:13:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3075. [2022-11-20 12:13:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 2402 states have (on average 1.3934221482098252) internal successors, (3347), 2416 states have internal predecessors, (3347), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 512 states have call predecessors, (602), 478 states have call successors, (602) [2022-11-20 12:13:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4429 transitions. [2022-11-20 12:13:37,449 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4429 transitions. Word has length 593 [2022-11-20 12:13:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:37,451 INFO L495 AbstractCegarLoop]: Abstraction has 3075 states and 4429 transitions. [2022-11-20 12:13:37,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-11-20 12:13:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4429 transitions. [2022-11-20 12:13:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-11-20 12:13:37,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:37,465 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:37,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:37,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:37,687 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash 214102459, now seen corresponding path program 2 times [2022-11-20 12:13:37,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:37,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257440661] [2022-11-20 12:13:37,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:37,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:37,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:37,692 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:37,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 12:13:48,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:13:48,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:49,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 6203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:13:49,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2022-11-20 12:13:49,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:49,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:49,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257440661] [2022-11-20 12:13:49,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257440661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:49,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:49,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:13:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503305248] [2022-11-20 12:13:49,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:49,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:13:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:13:49,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:13:49,573 INFO L87 Difference]: Start difference. First operand 3075 states and 4429 transitions. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-20 12:13:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:50,342 INFO L93 Difference]: Finished difference Result 6167 states and 8901 transitions. [2022-11-20 12:13:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:13:50,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 629 [2022-11-20 12:13:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:50,355 INFO L225 Difference]: With dead ends: 6167 [2022-11-20 12:13:50,355 INFO L226 Difference]: Without dead ends: 3095 [2022-11-20 12:13:50,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:13:50,364 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 2 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:50,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3917 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:13:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-11-20 12:13:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3083. [2022-11-20 12:13:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 2410 states have (on average 1.392116182572614) internal successors, (3355), 2420 states have internal predecessors, (3355), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 516 states have call predecessors, (602), 478 states have call successors, (602) [2022-11-20 12:13:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4437 transitions. [2022-11-20 12:13:50,763 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4437 transitions. Word has length 629 [2022-11-20 12:13:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:50,763 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 4437 transitions. [2022-11-20 12:13:50,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-20 12:13:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4437 transitions. [2022-11-20 12:13:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-11-20 12:13:50,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:50,776 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:50,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:50,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:50,999 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:50,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash 586231223, now seen corresponding path program 3 times [2022-11-20 12:13:51,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:51,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473059824] [2022-11-20 12:13:51,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:13:51,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:51,005 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:51,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 12:14:00,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:14:00,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:00,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:01,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2022-11-20 12:14:01,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:01,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:01,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473059824] [2022-11-20 12:14:01,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473059824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:01,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:01,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:14:01,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295153424] [2022-11-20 12:14:01,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:01,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:01,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:01,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:01,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:01,385 INFO L87 Difference]: Start difference. First operand 3083 states and 4437 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:14:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:01,888 INFO L93 Difference]: Finished difference Result 6187 states and 9141 transitions. [2022-11-20 12:14:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 687 [2022-11-20 12:14:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:01,900 INFO L225 Difference]: With dead ends: 6187 [2022-11-20 12:14:01,900 INFO L226 Difference]: Without dead ends: 3107 [2022-11-20 12:14:01,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:01,908 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:01,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:14:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-11-20 12:14:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3095. [2022-11-20 12:14:02,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2422 states have (on average 1.3901734104046244) internal successors, (3367), 2426 states have internal predecessors, (3367), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 522 states have call predecessors, (602), 478 states have call successors, (602) [2022-11-20 12:14:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4449 transitions. [2022-11-20 12:14:02,176 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4449 transitions. Word has length 687 [2022-11-20 12:14:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:02,177 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4449 transitions. [2022-11-20 12:14:02,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:14:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4449 transitions. [2022-11-20 12:14:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-11-20 12:14:02,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:02,185 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:02,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:02,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:02,385 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:02,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:02,386 INFO L85 PathProgramCache]: Analyzing trace with hash 327773175, now seen corresponding path program 1 times [2022-11-20 12:14:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:02,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003061918] [2022-11-20 12:14:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:02,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:02,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:02,390 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:14:02,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 12:14:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:13,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 6945 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:13,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 838 proven. 0 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2022-11-20 12:14:13,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:13,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:13,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003061918] [2022-11-20 12:14:13,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003061918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:13,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:13,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:14:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117328851] [2022-11-20 12:14:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:13,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:13,731 INFO L87 Difference]: Start difference. First operand 3095 states and 4449 transitions. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 12:14:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:14,150 INFO L93 Difference]: Finished difference Result 6223 states and 9189 transitions. [2022-11-20 12:14:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:14,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 687 [2022-11-20 12:14:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:14,164 INFO L225 Difference]: With dead ends: 6223 [2022-11-20 12:14:14,164 INFO L226 Difference]: Without dead ends: 3131 [2022-11-20 12:14:14,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:14,174 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 2 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3981 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:14,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3981 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:14:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-11-20 12:14:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3119. [2022-11-20 12:14:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 2440 states have (on average 1.3872950819672132) internal successors, (3385), 2444 states have internal predecessors, (3385), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 528 states have call predecessors, (620), 478 states have call successors, (620) [2022-11-20 12:14:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4485 transitions. [2022-11-20 12:14:14,446 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4485 transitions. Word has length 687 [2022-11-20 12:14:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:14,446 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 4485 transitions. [2022-11-20 12:14:14,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 12:14:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4485 transitions. [2022-11-20 12:14:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-11-20 12:14:14,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:14,461 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:14,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:14,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:14,675 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1845683625, now seen corresponding path program 1 times [2022-11-20 12:14:14,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:14,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51621901] [2022-11-20 12:14:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:14,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:14,680 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:14:14,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 12:14:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:27,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 6945 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:27,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2022-11-20 12:14:27,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:27,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:27,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51621901] [2022-11-20 12:14:27,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51621901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:27,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:27,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:14:27,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662432920] [2022-11-20 12:14:27,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:27,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:27,510 INFO L87 Difference]: Start difference. First operand 3119 states and 4485 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 12:14:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:28,189 INFO L93 Difference]: Finished difference Result 6255 states and 9013 transitions. [2022-11-20 12:14:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:28,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) Word has length 687 [2022-11-20 12:14:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:28,198 INFO L225 Difference]: With dead ends: 6255 [2022-11-20 12:14:28,198 INFO L226 Difference]: Without dead ends: 3139 [2022-11-20 12:14:28,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:28,204 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 2 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:28,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3924 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:14:28,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-11-20 12:14:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3127. [2022-11-20 12:14:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 2448 states have (on average 1.3860294117647058) internal successors, (3393), 2448 states have internal predecessors, (3393), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 532 states have call predecessors, (620), 478 states have call successors, (620) [2022-11-20 12:14:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4493 transitions. [2022-11-20 12:14:28,471 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4493 transitions. Word has length 687 [2022-11-20 12:14:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:28,472 INFO L495 AbstractCegarLoop]: Abstraction has 3127 states and 4493 transitions. [2022-11-20 12:14:28,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 12:14:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4493 transitions. [2022-11-20 12:14:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2022-11-20 12:14:28,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:28,480 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:28,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:28,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:28,681 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2086507226, now seen corresponding path program 2 times [2022-11-20 12:14:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:28,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011386841] [2022-11-20 12:14:28,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:14:28,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:28,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:28,687 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:14:28,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 12:14:43,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:14:43,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:43,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 7687 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:43,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 1576 trivial. 0 not checked. [2022-11-20 12:14:44,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:44,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:44,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011386841] [2022-11-20 12:14:44,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011386841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:44,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:44,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:14:44,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198689858] [2022-11-20 12:14:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:44,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:44,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:44,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:44,369 INFO L87 Difference]: Start difference. First operand 3127 states and 4493 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-20 12:14:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:44,805 INFO L93 Difference]: Finished difference Result 6263 states and 9181 transitions. [2022-11-20 12:14:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 745 [2022-11-20 12:14:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:44,813 INFO L225 Difference]: With dead ends: 6263 [2022-11-20 12:14:44,813 INFO L226 Difference]: Without dead ends: 3139 [2022-11-20 12:14:44,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:44,819 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 13 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4002 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:44,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4002 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:14:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-11-20 12:14:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3127. [2022-11-20 12:14:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 2448 states have (on average 1.383578431372549) internal successors, (3387), 2448 states have internal predecessors, (3387), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 532 states have call predecessors, (620), 478 states have call successors, (620) [2022-11-20 12:14:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4487 transitions. [2022-11-20 12:14:45,040 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4487 transitions. Word has length 745 [2022-11-20 12:14:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:45,040 INFO L495 AbstractCegarLoop]: Abstraction has 3127 states and 4487 transitions. [2022-11-20 12:14:45,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-20 12:14:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4487 transitions. [2022-11-20 12:14:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2022-11-20 12:14:45,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:45,049 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:45,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:45,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:45,250 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1751353659, now seen corresponding path program 3 times [2022-11-20 12:14:45,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:45,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250865950] [2022-11-20 12:14:45,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:14:45,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:45,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:45,256 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:14:45,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 12:14:52,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:14:52,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:52,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:52,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 2276 trivial. 0 not checked. [2022-11-20 12:14:53,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2022-11-20 12:14:53,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:53,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250865950] [2022-11-20 12:14:53,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250865950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:53,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:53,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:14:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064169378] [2022-11-20 12:14:53,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:14:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:14:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:14:53,900 INFO L87 Difference]: Start difference. First operand 3127 states and 4487 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:14:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:54,645 INFO L93 Difference]: Finished difference Result 6263 states and 9007 transitions. [2022-11-20 12:14:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:14:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 745 [2022-11-20 12:14:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:54,656 INFO L225 Difference]: With dead ends: 6263 [2022-11-20 12:14:54,656 INFO L226 Difference]: Without dead ends: 3139 [2022-11-20 12:14:54,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1489 GetRequests, 1484 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:14:54,663 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:54,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3938 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:14:54,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-11-20 12:14:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3139. [2022-11-20 12:14:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2460 states have (on average 1.3817073170731706) internal successors, (3399), 2460 states have internal predecessors, (3399), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 532 states have call predecessors, (620), 478 states have call successors, (620) [2022-11-20 12:14:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4499 transitions. [2022-11-20 12:14:54,944 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4499 transitions. Word has length 745 [2022-11-20 12:14:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:54,945 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4499 transitions. [2022-11-20 12:14:54,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:14:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4499 transitions. [2022-11-20 12:14:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2022-11-20 12:14:54,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:54,954 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:55,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:55,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:55,171 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:55,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash 669511135, now seen corresponding path program 4 times [2022-11-20 12:14:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:55,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783800628] [2022-11-20 12:14:55,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:14:55,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:55,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:55,176 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:14:55,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 12:15:12,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:15:12,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:13,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 7753 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:15:13,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 1352 proven. 10 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-20 12:15:14,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 148 proven. 10 refuted. 0 times theorem prover too weak. 2233 trivial. 0 not checked. [2022-11-20 12:15:17,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:17,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783800628] [2022-11-20 12:15:17,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783800628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:17,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:17,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 12:15:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680652348] [2022-11-20 12:15:17,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:17,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:15:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:15:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:15:17,369 INFO L87 Difference]: Start difference. First operand 3139 states and 4499 transitions. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-11-20 12:15:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:20,729 INFO L93 Difference]: Finished difference Result 6299 states and 9055 transitions. [2022-11-20 12:15:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:15:20,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 751 [2022-11-20 12:15:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:20,738 INFO L225 Difference]: With dead ends: 6299 [2022-11-20 12:15:20,738 INFO L226 Difference]: Without dead ends: 3163 [2022-11-20 12:15:20,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1490 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:15:20,744 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 6888 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7874 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:20,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7874 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:15:20,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-11-20 12:15:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3163. [2022-11-20 12:15:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 2484 states have (on average 1.3780193236714975) internal successors, (3423), 2484 states have internal predecessors, (3423), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 532 states have call predecessors, (620), 478 states have call successors, (620) [2022-11-20 12:15:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4523 transitions. [2022-11-20 12:15:21,044 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4523 transitions. Word has length 751 [2022-11-20 12:15:21,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:21,045 INFO L495 AbstractCegarLoop]: Abstraction has 3163 states and 4523 transitions. [2022-11-20 12:15:21,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-11-20 12:15:21,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4523 transitions. [2022-11-20 12:15:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2022-11-20 12:15:21,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:21,056 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:21,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:21,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:21,257 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:21,257 INFO L85 PathProgramCache]: Analyzing trace with hash -516016225, now seen corresponding path program 5 times [2022-11-20 12:15:21,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:21,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532447809] [2022-11-20 12:15:21,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:15:21,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:21,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:21,262 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:15:21,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10eaa900-eeec-4cd4-b08f-255cdb7c9e31/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process