./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- 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 11:46:49,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:46:49,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:46:49,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:46:49,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:46:49,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:46:49,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:46:49,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:46:49,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:46:49,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:46:49,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:46:49,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:46:49,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:46:49,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:46:49,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:46:49,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:46:49,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:46:49,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:46:49,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:46:49,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:46:49,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:46:49,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:46:49,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:46:49,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:46:49,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:46:49,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:46:49,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:46:49,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:46:49,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:46:49,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:46:49,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:46:49,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:46:49,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:46:49,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:46:49,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:46:49,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:46:49,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:46:49,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:46:49,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:46:49,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:46:49,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:46:49,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:46:49,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:46:49,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:46:49,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:46:49,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:46:49,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:46:49,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:46:49,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:46:49,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:46:49,778 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:46:49,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:46:49,778 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:46:49,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:46:49,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:46:49,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:46:49,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:46:49,780 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:46:49,780 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:46:49,780 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:46:49,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:46:49,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:46:49,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:46:49,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:46:49,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:46:49,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:46:49,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:46:49,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:49,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:46:49,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:46:49,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:46:49,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:46:49,790 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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2022-11-20 11:46:50,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:46:50,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:46:50,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:46:50,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:46:50,085 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:46:50,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-11-20 11:46:53,100 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:46:53,642 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:46:53,643 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-11-20 11:46:53,715 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/data/2379c8c7e/b856e95971e24c94a5f75f986d670eb7/FLAG399769f91 [2022-11-20 11:46:53,730 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/data/2379c8c7e/b856e95971e24c94a5f75f986d670eb7 [2022-11-20 11:46:53,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:46:53,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:46:53,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:53,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:46:53,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:46:53,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:53" (1/1) ... [2022-11-20 11:46:53,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6d5a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:53, skipping insertion in model container [2022-11-20 11:46:53,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:53" (1/1) ... [2022-11-20 11:46:53,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:46:53,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:46:54,589 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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-11-20 11:46:54,667 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-20 11:46:54,888 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: Unknown Expression StructAccessExpression at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:407) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValueFromBinaryExpression(TypeSizes.java:545) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:399) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValueFromBinaryExpression(TypeSizes.java:545) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:399) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractBooleanValueFromBinaryExpression(TypeSizes.java:639) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractBooleanValue(TypeSizes.java:615) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValueFromIfThenElseExpression(TypeSizes.java:533) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:401) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:354) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftLeft(BitabsTranslation.java:148) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:187) 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:728) 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:728) 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:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) 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:1646) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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:1646) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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:1646) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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:1646) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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 11:46:54,897 INFO L158 Benchmark]: Toolchain (without parser) took 1161.93ms. Allocated memory is still 188.7MB. Free memory was 147.8MB in the beginning and 150.1MB in the end (delta: -2.3MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2022-11-20 11:46:54,897 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:46:54,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1158.80ms. Allocated memory is still 188.7MB. Free memory was 147.4MB in the beginning and 150.1MB in the end (delta: -2.6MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2022-11-20 11:46:54,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1158.80ms. Allocated memory is still 188.7MB. Free memory was 147.4MB in the beginning and 150.1MB in the end (delta: -2.6MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: Unknown Expression StructAccessExpression de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: Unknown Expression StructAccessExpression: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:407) 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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- 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 11:46:57,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:46:57,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:46:57,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:46:57,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:46:57,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:46:57,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:46:57,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:46:57,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:46:57,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:46:57,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:46:57,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:46:57,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:46:57,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:46:57,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:46:57,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:46:57,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:46:57,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:46:57,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:46:57,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:46:57,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:46:57,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:46:57,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:46:57,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:46:57,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:46:57,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:46:57,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:46:57,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:46:57,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:46:57,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:46:57,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:46:57,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:46:57,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:46:57,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:46:57,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:46:57,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:46:57,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:46:57,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:46:57,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:46:57,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:46:57,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:46:57,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:46:57,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:46:57,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:46:57,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:46:57,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:46:57,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:46:57,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:46:57,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:46:57,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:46:57,349 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:46:57,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:46:57,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:46:57,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:46:57,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:46:57,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:46:57,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:46:57,352 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:46:57,352 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:46:57,353 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:46:57,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:46:57,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:46:57,354 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:46:57,354 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:46:57,354 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:46:57,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:46:57,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:46:57,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:46:57,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:46:57,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:57,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:46:57,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:46:57,357 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:46:57,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:46:57,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:46:57,358 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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2022-11-20 11:46:57,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:46:57,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:46:57,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:46:57,794 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:46:57,795 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:46:57,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-11-20 11:47:01,004 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:47:01,519 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:47:01,520 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-11-20 11:47:01,573 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/data/7980d46d1/572a25347fdd4008b42df3b04ac086e1/FLAG5efb2ec9e [2022-11-20 11:47:01,594 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/data/7980d46d1/572a25347fdd4008b42df3b04ac086e1 [2022-11-20 11:47:01,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:47:01,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:47:01,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:01,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:47:01,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:47:01,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f36023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01, skipping insertion in model container [2022-11-20 11:47:01,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:47:01,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:47:02,581 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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-11-20 11:47:03,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:03,207 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:47:03,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:47:03,330 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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-11-20 11:47:03,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:03,671 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:47:03,751 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_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-11-20 11:47:04,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:04,094 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:47:04,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04 WrapperNode [2022-11-20 11:47:04,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:04,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:04,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:47:04,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:47:04,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,329 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2022-11-20 11:47:04,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:04,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:47:04,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:47:04,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:47:04,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,601 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:47:04,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:47:04,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:47:04,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:47:04,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (1/1) ... [2022-11-20 11:47:04,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:47:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:04,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:47:04,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:47:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-11-20 11:47:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-11-20 11:47:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 11:47:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:47:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:47:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 11:47:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:47:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-20 11:47:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-20 11:47:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-11-20 11:47:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-11-20 11:47:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-11-20 11:47:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-11-20 11:47:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-11-20 11:47:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-11-20 11:47:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 11:47:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-11-20 11:47:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-11-20 11:47:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 11:47:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 11:47:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-11-20 11:47:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-11-20 11:47:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 11:47:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:47:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:47:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-20 11:47:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-20 11:47:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-11-20 11:47:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-11-20 11:47:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-11-20 11:47:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-11-20 11:47:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:47:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:47:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-11-20 11:47:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-11-20 11:47:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-11-20 11:47:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-11-20 11:47:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:47:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:47:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-20 11:47:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-20 11:47:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 11:47:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 11:47:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 11:47:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:47:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-11-20 11:47:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-11-20 11:47:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 11:47:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 11:47:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:47:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:47:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 11:47:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:47:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 11:47:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-11-20 11:47:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-11-20 11:47:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-20 11:47:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-20 11:47:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 11:47:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-11-20 11:47:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-11-20 11:47:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-11-20 11:47:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-11-20 11:47:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-11-20 11:47:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-11-20 11:47:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:47:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:47:05,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:47:05,485 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:47:05,561 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:05,580 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-11-20 11:47:05,580 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-11-20 11:47:05,588 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:06,167 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-11-20 11:47:06,167 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-11-20 11:47:06,239 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:06,264 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-11-20 11:47:06,265 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-11-20 11:47:06,273 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:08,467 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:08,491 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:08,545 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-11-20 11:47:08,546 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-11-20 11:47:08,549 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:08,550 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:08,550 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:09,021 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-11-20 11:47:09,021 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-11-20 11:47:09,022 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-11-20 11:47:09,022 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-11-20 11:47:09,022 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-11-20 11:47:09,022 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-11-20 11:47:09,027 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:09,059 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:09,063 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:13,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-11-20 11:47:13,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-11-20 11:47:13,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-11-20 11:47:13,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-11-20 11:47:13,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2022-11-20 11:47:13,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2022-11-20 11:47:14,021 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:14,155 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-11-20 11:47:14,155 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-11-20 11:47:14,170 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:14,205 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:14,208 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:14,212 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:14,219 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:14,225 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:14,227 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:14,230 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 11:47:19,047 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2022-11-20 11:47:19,047 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-11-20 11:47:19,048 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-11-20 11:47:19,049 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-11-20 11:47:19,049 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-11-20 11:47:19,049 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-11-20 11:47:19,049 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2022-11-20 11:47:19,049 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2022-11-20 11:47:19,071 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:47:19,090 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:47:19,090 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:47:19,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:19 BoogieIcfgContainer [2022-11-20 11:47:19,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:47:19,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:47:19,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:47:19,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:47:19,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:47:01" (1/3) ... [2022-11-20 11:47:19,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1912d3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:19, skipping insertion in model container [2022-11-20 11:47:19,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:04" (2/3) ... [2022-11-20 11:47:19,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1912d3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:19, skipping insertion in model container [2022-11-20 11:47:19,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:19" (3/3) ... [2022-11-20 11:47:19,135 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-11-20 11:47:19,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:47:19,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2022-11-20 11:47:19,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:47:19,237 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@7e095b83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:47:19,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2022-11-20 11:47:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:47:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:47:19,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:19,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:47:19,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:47:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2022-11-20 11:47:19,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:19,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819991860] [2022-11-20 11:47:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:19,280 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 11:47:19,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:19,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:19,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:21,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:47:21,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:21,423 INFO L321 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size [2022-11-20 11:47:21,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 36 [2022-11-20 11:47:21,509 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 11:47:21,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:21,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:21,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819991860] [2022-11-20 11:47:21,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819991860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:21,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:21,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:47:21,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282538062] [2022-11-20 11:47:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:21,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:21,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:21,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:21,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:21,566 INFO L87 Difference]: Start difference. First operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:26,345 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2022-11-20 11:47:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:26,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 11:47:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:26,368 INFO L225 Difference]: With dead ends: 2077 [2022-11-20 11:47:26,369 INFO L226 Difference]: Without dead ends: 2075 [2022-11-20 11:47:26,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:47:26,373 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:26,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 11:47:26,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-11-20 11:47:26,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2022-11-20 11:47:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1017 states have (on average 2.1435594886922322) internal successors, (2180), 1991 states have internal predecessors, (2180), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:47:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2022-11-20 11:47:26,580 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2022-11-20 11:47:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:26,580 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2022-11-20 11:47:26,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2022-11-20 11:47:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:47:26,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:26,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:47:26,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:26,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:47:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2022-11-20 11:47:26,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:26,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273714979] [2022-11-20 11:47:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:26,807 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 11:47:26,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:26,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:26,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:28,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:47:28,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:28,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:47:28,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:47:28,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:47:28,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:47:29,000 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-20 11:47:29,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-20 11:47:29,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-11-20 11:47:29,069 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 11:47:29,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:29,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:29,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273714979] [2022-11-20 11:47:29,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273714979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:29,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:29,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:47:29,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397781865] [2022-11-20 11:47:29,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:29,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:29,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:29,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:29,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:29,074 INFO L87 Difference]: Start difference. First operand 2075 states and 2347 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:35,122 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2022-11-20 11:47:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:35,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 11:47:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:35,131 INFO L225 Difference]: With dead ends: 2073 [2022-11-20 11:47:35,132 INFO L226 Difference]: Without dead ends: 2073 [2022-11-20 11:47:35,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:47:35,133 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:35,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-20 11:47:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2022-11-20 11:47:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2022-11-20 11:47:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1017 states have (on average 2.1415929203539825) internal successors, (2178), 1989 states have internal predecessors, (2178), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:47:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2022-11-20 11:47:35,187 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2022-11-20 11:47:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:35,188 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2022-11-20 11:47:35,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2022-11-20 11:47:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:47:35,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:35,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:47:35,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:35,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:47:35,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2022-11-20 11:47:35,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:35,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003334868] [2022-11-20 11:47:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:35,414 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 11:47:35,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:35,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:35,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:36,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:47:36,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:36,820 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-20 11:47:36,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-20 11:47:36,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:47:36,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-20 11:47:36,920 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 11:47:36,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:36,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:36,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003334868] [2022-11-20 11:47:36,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003334868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:36,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:36,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:47:36,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869717754] [2022-11-20 11:47:36,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:36,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:47:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:47:36,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:47:36,923 INFO L87 Difference]: Start difference. First operand 2073 states and 2345 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:42,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:47:50,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:47:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:50,673 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2022-11-20 11:47:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:47:50,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:47:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:50,683 INFO L225 Difference]: With dead ends: 2072 [2022-11-20 11:47:50,683 INFO L226 Difference]: Without dead ends: 2072 [2022-11-20 11:47:50,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:47:50,685 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:50,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2022-11-20 11:47:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-20 11:47:50,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-11-20 11:47:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:47:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2022-11-20 11:47:50,735 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2022-11-20 11:47:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:50,736 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2022-11-20 11:47:50,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2022-11-20 11:47:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:47:50,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:50,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:47:50,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:50,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:50,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:47:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:50,952 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2022-11-20 11:47:50,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:50,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363741689] [2022-11-20 11:47:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:50,954 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 11:47:50,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:50,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:50,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:47:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:47:52,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:52,367 INFO L321 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2022-11-20 11:47:52,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 60 [2022-11-20 11:47:52,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:47:52,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:47:52,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-20 11:47:52,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 11:47:52,562 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 11:47:52,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:52,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:52,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363741689] [2022-11-20 11:47:52,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363741689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:52,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:52,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:47:52,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214140400] [2022-11-20 11:47:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:52,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:47:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:47:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:47:52,565 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:58,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:48:08,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:48:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:08,192 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2022-11-20 11:48:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:08,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:48:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:08,201 INFO L225 Difference]: With dead ends: 2071 [2022-11-20 11:48:08,201 INFO L226 Difference]: Without dead ends: 2071 [2022-11-20 11:48:08,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:08,202 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:08,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 15.4s Time] [2022-11-20 11:48:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-11-20 11:48:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2022-11-20 11:48:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1016 states have (on average 2.141732283464567) internal successors, (2176), 1987 states have internal predecessors, (2176), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:48:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2022-11-20 11:48:08,249 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2022-11-20 11:48:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:08,249 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2022-11-20 11:48:08,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2022-11-20 11:48:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:48:08,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:08,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:08,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:08,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:08,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:48:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2022-11-20 11:48:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:48:08,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722217220] [2022-11-20 11:48:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:08,470 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 11:48:08,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:48:08,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:08,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:09,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:48:09,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:09,639 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 11:48:09,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:48:09,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:48:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722217220] [2022-11-20 11:48:09,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722217220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:09,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:09,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:48:09,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207851098] [2022-11-20 11:48:09,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:09,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:48:09,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:48:09,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:48:09,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:48:09,642 INFO L87 Difference]: Start difference. First operand 2071 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:48:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:09,737 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2022-11-20 11:48:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:48:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-20 11:48:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:09,745 INFO L225 Difference]: With dead ends: 2074 [2022-11-20 11:48:09,745 INFO L226 Difference]: Without dead ends: 2072 [2022-11-20 11:48:09,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:48:09,747 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 2 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:09,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7018 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:48:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-20 11:48:09,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-11-20 11:48:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:48:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2022-11-20 11:48:09,792 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2022-11-20 11:48:09,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:09,792 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2022-11-20 11:48:09,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:48:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2022-11-20 11:48:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:48:09,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:09,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:09,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:10,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:10,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:48:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2022-11-20 11:48:10,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:48:10,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912432235] [2022-11-20 11:48:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:10,010 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 11:48:10,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:48:10,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:10,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:11,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:48:11,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:11,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:11,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:48:11,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912432235] [2022-11-20 11:48:11,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912432235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:11,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:48:11,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:48:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450352974] [2022-11-20 11:48:11,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:48:11,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:48:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:48:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:11,298 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:48:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:11,651 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2022-11-20 11:48:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:48:11,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-20 11:48:11,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:11,660 INFO L225 Difference]: With dead ends: 2084 [2022-11-20 11:48:11,661 INFO L226 Difference]: Without dead ends: 2082 [2022-11-20 11:48:11,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:48:11,664 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 13 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:11,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9352 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:48:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-11-20 11:48:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2022-11-20 11:48:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1026 states have (on average 2.1335282651072123) internal successors, (2189), 1997 states have internal predecessors, (2189), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:48:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2022-11-20 11:48:11,713 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2022-11-20 11:48:11,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:11,713 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2022-11-20 11:48:11,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:48:11,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2022-11-20 11:48:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:48:11,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:11,714 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:11,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:11,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:11,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:48:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2022-11-20 11:48:11,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:48:11,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050180476] [2022-11-20 11:48:11,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:48:11,938 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 11:48:11,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:48:11,940 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:11,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:14,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:48:14,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:48:14,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-20 11:48:14,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:14,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:14,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:14,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:14,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:15,294 INFO L217 Elim1Store]: Index analysis took 310 ms [2022-11-20 11:48:18,194 INFO L321 Elim1Store]: treesize reduction 1683, result has 16.4 percent of original size [2022-11-20 11:48:18,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 75 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 80 case distinctions, treesize of input 152 treesize of output 443 [2022-11-20 11:48:20,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:48:23,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 66 [2022-11-20 11:48:38,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:38,438 INFO L217 Elim1Store]: Index analysis took 144 ms [2022-11-20 11:48:39,105 INFO L321 Elim1Store]: treesize reduction 286, result has 33.5 percent of original size [2022-11-20 11:48:39,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 142 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 131 treesize of output 267 [2022-11-20 11:48:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:48:41,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:48:41,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:48:41,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050180476] [2022-11-20 11:48:41,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050180476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:41,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:41,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:41,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392544098] [2022-11-20 11:48:41,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:41,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:48:41,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:48:41,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:48:41,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:48:41,213 INFO L87 Difference]: Start difference. First operand 2082 states and 2356 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:48:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:46,249 INFO L93 Difference]: Finished difference Result 2083 states and 2356 transitions. [2022-11-20 11:48:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:48:46,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 11:48:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:46,256 INFO L225 Difference]: With dead ends: 2083 [2022-11-20 11:48:46,257 INFO L226 Difference]: Without dead ends: 2081 [2022-11-20 11:48:46,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:48:46,258 INFO L413 NwaCegarLoop]: 2334 mSDtfsCounter, 6 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1951 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:46,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6441 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 967 Invalid, 0 Unknown, 1951 Unchecked, 4.9s Time] [2022-11-20 11:48:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2022-11-20 11:48:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2081. [2022-11-20 11:48:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 1026 states have (on average 2.1306042884990255) internal successors, (2186), 1996 states have internal predecessors, (2186), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:48:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2353 transitions. [2022-11-20 11:48:46,298 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2353 transitions. Word has length 17 [2022-11-20 11:48:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:46,299 INFO L495 AbstractCegarLoop]: Abstraction has 2081 states and 2353 transitions. [2022-11-20 11:48:46,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:48:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2353 transitions. [2022-11-20 11:48:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:48:46,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:46,300 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:46,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:46,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:48:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times [2022-11-20 11:48:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:48:46,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738838965] [2022-11-20 11:48:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:46,527 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 11:48:46,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:48:46,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:46,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:47,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:48:47,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:47,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:48,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:48:48,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738838965] [2022-11-20 11:48:48,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738838965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:48,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:48:48,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 11:48:48,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112586450] [2022-11-20 11:48:48,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:48,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:48:48,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:48:48,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:48:48,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:48:48,111 INFO L87 Difference]: Start difference. First operand 2081 states and 2353 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:48:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:49,136 INFO L93 Difference]: Finished difference Result 2100 states and 2376 transitions. [2022-11-20 11:48:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:48:49,137 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-11-20 11:48:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:49,144 INFO L225 Difference]: With dead ends: 2100 [2022-11-20 11:48:49,144 INFO L226 Difference]: Without dead ends: 2090 [2022-11-20 11:48:49,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:48:49,145 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 34 mSDsluCounter, 18692 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 21033 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:49,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 21033 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:48:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-11-20 11:48:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090. [2022-11-20 11:48:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1035 states have (on average 2.1207729468599035) internal successors, (2195), 2005 states have internal predecessors, (2195), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:48:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2362 transitions. [2022-11-20 11:48:49,187 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2362 transitions. Word has length 17 [2022-11-20 11:48:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:49,188 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 2362 transitions. [2022-11-20 11:48:49,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:48:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2362 transitions. [2022-11-20 11:48:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:48:49,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:49,189 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:49,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:49,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:49,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:48:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times [2022-11-20 11:48:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:48:49,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376678718] [2022-11-20 11:48:49,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:48:49,416 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 11:48:49,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:48:49,417 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:49,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:48:52,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:48:52,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:48:52,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:48:52,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:52,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:52,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:52,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:52,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:52,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:52,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:53,188 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 11:48:53,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-20 11:48:53,259 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 11:48:53,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-20 11:48:53,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:53,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:48:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 11:48:53,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:48:53,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:48:53,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376678718] [2022-11-20 11:48:53,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376678718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:53,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:53,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:48:53,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506581505] [2022-11-20 11:48:53,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:53,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:48:53,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:48:53,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:48:53,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:48:53,853 INFO L87 Difference]: Start difference. First operand 2090 states and 2362 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:49:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:00,079 INFO L93 Difference]: Finished difference Result 2089 states and 2361 transitions. [2022-11-20 11:49:00,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:49:00,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-20 11:49:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:00,087 INFO L225 Difference]: With dead ends: 2089 [2022-11-20 11:49:00,088 INFO L226 Difference]: Without dead ends: 2089 [2022-11-20 11:49:00,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:49:00,089 INFO L413 NwaCegarLoop]: 2305 mSDtfsCounter, 54 mSDsluCounter, 4090 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 6395 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1845 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:00,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 6395 Invalid, 2804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 957 Invalid, 0 Unknown, 1845 Unchecked, 6.2s Time] [2022-11-20 11:49:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2022-11-20 11:49:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2089. [2022-11-20 11:49:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 1035 states have (on average 2.119806763285024) internal successors, (2194), 2004 states have internal predecessors, (2194), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:49:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2361 transitions. [2022-11-20 11:49:00,129 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2361 transitions. Word has length 23 [2022-11-20 11:49:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:00,130 INFO L495 AbstractCegarLoop]: Abstraction has 2089 states and 2361 transitions. [2022-11-20 11:49:00,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:49:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2361 transitions. [2022-11-20 11:49:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 11:49:00,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:00,131 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:00,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:00,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:00,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:49:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times [2022-11-20 11:49:00,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:49:00,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977472640] [2022-11-20 11:49:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:00,349 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 11:49:00,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:49:00,350 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:00,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:01,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:49:01,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:01,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:49:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:02,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:49:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977472640] [2022-11-20 11:49:02,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977472640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:49:02,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:49:02,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-20 11:49:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891538060] [2022-11-20 11:49:02,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:49:02,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:49:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:49:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:49:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:49:02,871 INFO L87 Difference]: Start difference. First operand 2089 states and 2361 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:49:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:06,600 INFO L93 Difference]: Finished difference Result 2123 states and 2405 transitions. [2022-11-20 11:49:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 11:49:06,601 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-20 11:49:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:06,606 INFO L225 Difference]: With dead ends: 2123 [2022-11-20 11:49:06,606 INFO L226 Difference]: Without dead ends: 2107 [2022-11-20 11:49:06,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=890, Invalid=1866, Unknown=0, NotChecked=0, Total=2756 [2022-11-20 11:49:06,608 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 114 mSDsluCounter, 25738 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 28081 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:06,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 28081 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:49:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2022-11-20 11:49:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 2107. [2022-11-20 11:49:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1053 states have (on average 2.100664767331434) internal successors, (2212), 2022 states have internal predecessors, (2212), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:49:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 2379 transitions. [2022-11-20 11:49:06,647 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 2379 transitions. Word has length 25 [2022-11-20 11:49:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:06,647 INFO L495 AbstractCegarLoop]: Abstraction has 2107 states and 2379 transitions. [2022-11-20 11:49:06,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:49:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 2379 transitions. [2022-11-20 11:49:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 11:49:06,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:06,649 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:06,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:06,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:06,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:49:06,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:06,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times [2022-11-20 11:49:06,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:49:06,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563123724] [2022-11-20 11:49:06,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:49:06,875 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 11:49:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:49:06,876 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:06,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:09,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:49:09,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:49:09,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:49:09,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:10,325 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2022-11-20 11:49:10,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2022-11-20 11:49:14,307 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2022-11-20 11:49:14,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 68 [2022-11-20 11:49:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-20 11:49:14,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:49:14,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:49:14,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563123724] [2022-11-20 11:49:14,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563123724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:14,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:14,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:14,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781122406] [2022-11-20 11:49:14,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:14,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:49:14,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:49:14,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:49:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:49:14,690 INFO L87 Difference]: Start difference. First operand 2107 states and 2379 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:49:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:18,772 INFO L93 Difference]: Finished difference Result 2106 states and 2378 transitions. [2022-11-20 11:49:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:49:18,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-20 11:49:18,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:18,780 INFO L225 Difference]: With dead ends: 2106 [2022-11-20 11:49:18,780 INFO L226 Difference]: Without dead ends: 2106 [2022-11-20 11:49:18,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:49:18,781 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 6 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5046 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 980 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:18,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5046 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 971 Invalid, 0 Unknown, 980 Unchecked, 4.0s Time] [2022-11-20 11:49:18,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2022-11-20 11:49:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2022-11-20 11:49:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1053 states have (on average 2.0997150997150995) internal successors, (2211), 2021 states have internal predecessors, (2211), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:49:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2378 transitions. [2022-11-20 11:49:18,840 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2378 transitions. Word has length 37 [2022-11-20 11:49:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:18,841 INFO L495 AbstractCegarLoop]: Abstraction has 2106 states and 2378 transitions. [2022-11-20 11:49:18,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:49:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2378 transitions. [2022-11-20 11:49:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 11:49:18,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:18,845 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:18,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:19,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:19,066 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:49:19,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times [2022-11-20 11:49:19,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:49:19,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578806486] [2022-11-20 11:49:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:19,068 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 11:49:19,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:49:19,069 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:19,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:49:20,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:21,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:49:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:24,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:49:24,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578806486] [2022-11-20 11:49:24,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578806486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:49:24,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:49:24,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-20 11:49:24,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407310548] [2022-11-20 11:49:24,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:49:24,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 11:49:24,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:49:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 11:49:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 11:49:24,581 INFO L87 Difference]: Start difference. First operand 2106 states and 2378 transitions. Second operand has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:49:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:40,452 INFO L93 Difference]: Finished difference Result 2170 states and 2464 transitions. [2022-11-20 11:49:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-20 11:49:40,453 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-11-20 11:49:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:40,461 INFO L225 Difference]: With dead ends: 2170 [2022-11-20 11:49:40,461 INFO L226 Difference]: Without dead ends: 2142 [2022-11-20 11:49:40,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342 [2022-11-20 11:49:40,465 INFO L413 NwaCegarLoop]: 2348 mSDtfsCounter, 402 mSDsluCounter, 53927 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 56275 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:40,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 56275 Invalid, 1986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 11:49:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2022-11-20 11:49:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2142. [2022-11-20 11:49:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1089 states have (on average 2.0633608815426996) internal successors, (2247), 2057 states have internal predecessors, (2247), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 11:49:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2414 transitions. [2022-11-20 11:49:40,524 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2414 transitions. Word has length 37 [2022-11-20 11:49:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:40,525 INFO L495 AbstractCegarLoop]: Abstraction has 2142 states and 2414 transitions. [2022-11-20 11:49:40,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:49:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2414 transitions. [2022-11-20 11:49:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 11:49:40,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:40,534 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:40,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:40,753 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:49:40,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times [2022-11-20 11:49:40,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:49:40,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58946476] [2022-11-20 11:49:40,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:49:40,756 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 11:49:40,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:49:40,757 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:40,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:49:44,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:49:44,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:49:44,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:49:44,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:44,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:44,920 INFO L217 Elim1Store]: Index analysis took 128 ms [2022-11-20 11:49:44,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 34 [2022-11-20 11:49:45,280 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2022-11-20 11:49:45,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2022-11-20 11:49:52,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:52,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:49:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2022-11-20 11:49:53,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:49:53,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:49:53,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58946476] [2022-11-20 11:49:53,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58946476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:53,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:53,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:49:53,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826148316] [2022-11-20 11:49:53,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:53,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:49:53,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:49:53,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:49:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:49:53,019 INFO L87 Difference]: Start difference. First operand 2142 states and 2414 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:50:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:04,262 INFO L93 Difference]: Finished difference Result 3532 states and 4049 transitions. [2022-11-20 11:50:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:50:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-11-20 11:50:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:04,275 INFO L225 Difference]: With dead ends: 3532 [2022-11-20 11:50:04,275 INFO L226 Difference]: Without dead ends: 3532 [2022-11-20 11:50:04,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:50:04,276 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 4455 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 3796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1268 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:04,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4457 Valid, 2760 Invalid, 3796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2340 Invalid, 0 Unknown, 1268 Unchecked, 11.1s Time] [2022-11-20 11:50:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2022-11-20 11:50:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 2867. [2022-11-20 11:50:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 1748 states have (on average 2.0635011441647597) internal successors, (3607), 2717 states have internal predecessors, (3607), 149 states have call successors, (149), 42 states have call predecessors, (149), 43 states have return successors, (132), 121 states have call predecessors, (132), 126 states have call successors, (132) [2022-11-20 11:50:04,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3888 transitions. [2022-11-20 11:50:04,353 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3888 transitions. Word has length 61 [2022-11-20 11:50:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:04,354 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 3888 transitions. [2022-11-20 11:50:04,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:50:04,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3888 transitions. [2022-11-20 11:50:04,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 11:50:04,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:04,355 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:04,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:50:04,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:50:04,571 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:50:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500246, now seen corresponding path program 1 times [2022-11-20 11:50:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:50:04,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519665857] [2022-11-20 11:50:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:04,574 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 11:50:04,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:50:04,577 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:50:04,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:50:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:06,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 11:50:06,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:50:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:09,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:50:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:22,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:50:22,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519665857] [2022-11-20 11:50:22,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519665857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:50:22,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:50:22,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2022-11-20 11:50:22,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26817373] [2022-11-20 11:50:22,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:50:22,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-11-20 11:50:22,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:50:22,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-11-20 11:50:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2022-11-20 11:50:22,055 INFO L87 Difference]: Start difference. First operand 2867 states and 3888 transitions. Second operand has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:51:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:43,328 INFO L93 Difference]: Finished difference Result 2991 states and 4058 transitions. [2022-11-20 11:51:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-11-20 11:51:43,329 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2022-11-20 11:51:43,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:43,337 INFO L225 Difference]: With dead ends: 2991 [2022-11-20 11:51:43,337 INFO L226 Difference]: Without dead ends: 2939 [2022-11-20 11:51:43,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3587 ImplicationChecksByTransitivity, 77.2s TimeCoverageRelationStatistics Valid=13940, Invalid=32070, Unknown=0, NotChecked=0, Total=46010 [2022-11-20 11:51:43,348 INFO L413 NwaCegarLoop]: 2354 mSDtfsCounter, 1295 mSDsluCounter, 112802 mSDsCounter, 0 mSdLazyCounter, 6124 mSolverCounterSat, 1247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 115156 SdHoareTripleChecker+Invalid, 7371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1247 IncrementalHoareTripleChecker+Valid, 6124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:43,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 115156 Invalid, 7371 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1247 Valid, 6124 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2022-11-20 11:51:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-11-20 11:51:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2939. [2022-11-20 11:51:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 1820 states have (on average 2.0214285714285714) internal successors, (3679), 2789 states have internal predecessors, (3679), 149 states have call successors, (149), 42 states have call predecessors, (149), 43 states have return successors, (132), 121 states have call predecessors, (132), 126 states have call successors, (132) [2022-11-20 11:51:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3960 transitions. [2022-11-20 11:51:43,447 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3960 transitions. Word has length 63 [2022-11-20 11:51:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:43,449 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 3960 transitions. [2022-11-20 11:51:43,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:51:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3960 transitions. [2022-11-20 11:51:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 11:51:43,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:43,453 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:43,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:43,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:51:43,674 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:51:43,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:43,675 INFO L85 PathProgramCache]: Analyzing trace with hash -387940330, now seen corresponding path program 2 times [2022-11-20 11:51:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:51:43,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628488605] [2022-11-20 11:51:43,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:51:43,677 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 11:51:43,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:51:43,677 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:51:43,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:51:45,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:51:45,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:46,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:51:46,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:46,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:51:46,216 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-20 11:51:46,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-20 11:51:52,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:51:52,245 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-20 11:51:52,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-20 11:51:53,166 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-20 11:51:53,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-20 11:51:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2022-11-20 11:51:53,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:53,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:51:53,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628488605] [2022-11-20 11:51:53,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628488605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:53,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:53,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:51:53,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084772940] [2022-11-20 11:51:53,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:53,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:51:53,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:51:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:51:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:51:53,451 INFO L87 Difference]: Start difference. First operand 2939 states and 3960 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:51:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:53,487 INFO L93 Difference]: Finished difference Result 2938 states and 3959 transitions. [2022-11-20 11:51:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:51:53,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2022-11-20 11:51:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:53,495 INFO L225 Difference]: With dead ends: 2938 [2022-11-20 11:51:53,495 INFO L226 Difference]: Without dead ends: 2938 [2022-11-20 11:51:53,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:51:53,496 INFO L413 NwaCegarLoop]: 2323 mSDtfsCounter, 2 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1936 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:53,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5039 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 1936 Unchecked, 0.0s Time] [2022-11-20 11:51:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-11-20 11:51:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2938. [2022-11-20 11:51:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 1820 states have (on average 2.020879120879121) internal successors, (3678), 2788 states have internal predecessors, (3678), 149 states have call successors, (149), 42 states have call predecessors, (149), 43 states have return successors, (132), 121 states have call predecessors, (132), 126 states have call successors, (132) [2022-11-20 11:51:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 3959 transitions. [2022-11-20 11:51:53,552 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 3959 transitions. Word has length 111 [2022-11-20 11:51:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:53,552 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 3959 transitions. [2022-11-20 11:51:53,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:51:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 3959 transitions. [2022-11-20 11:51:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 11:51:53,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:53,554 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:53,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:51:53,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:51:53,767 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-20 11:51:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash -387940329, now seen corresponding path program 1 times [2022-11-20 11:51:53,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:51:53,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424862207] [2022-11-20 11:51:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:53,769 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 11:51:53,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:51:53,770 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:51:53,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b56f5b-ddba-4ada-9b26-12b1b3782fdd/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 11:51:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:55,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-20 11:51:55,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:52:07,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:52:57,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:57,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424862207] [2022-11-20 11:52:57,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424862207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:57,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:52:57,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 194 [2022-11-20 11:52:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315190968] [2022-11-20 11:52:57,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:57,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-11-20 11:52:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-11-20 11:52:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2022-11-20 11:52:57,706 INFO L87 Difference]: Start difference. First operand 2938 states and 3959 transitions. Second operand has 194 states, 194 states have (on average 1.0618556701030928) internal successors, (206), 194 states have internal predecessors, (206), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)