./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e --- 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 09:37:03,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:37:03,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:37:03,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:37:03,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:37:03,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:37:03,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:37:03,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:37:03,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:37:03,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:37:03,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:37:03,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:37:03,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:37:03,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:37:03,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:37:03,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:37:03,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:37:03,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:37:03,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:37:03,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:37:03,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:37:03,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:37:03,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:37:03,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:37:03,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:37:03,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:37:03,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:37:03,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:37:03,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:37:03,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:37:03,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:37:03,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:37:03,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:37:03,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:37:03,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:37:03,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:37:03,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:37:03,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:37:03,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:37:03,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:37:03,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:37:03,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 09:37:03,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:37:03,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:37:03,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:37:03,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:37:03,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:37:03,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:37:03,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:37:03,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:37:03,935 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:37:03,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:37:03,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:37:03,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:37:03,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:37:03,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:37:03,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:37:03,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:37:03,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:37:03,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:37:03,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:37:03,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:37:03,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:37:03,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:37:03,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:37:03,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:37:03,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:37:03,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:37:03,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:37:03,942 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:37:03,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:37:03,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:37:03,943 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_6fe53373-33e7-4d87-b867-535ec0732afe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e [2022-11-20 09:37:04,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:37:04,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:37:04,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:37:04,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:37:04,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:37:04,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-11-20 09:37:07,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:37:08,030 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:37:08,030 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-11-20 09:37:08,076 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/data/fd82ab7d0/b1015c30f4b748289f1108418759373b/FLAGfc9e46d90 [2022-11-20 09:37:08,100 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/data/fd82ab7d0/b1015c30f4b748289f1108418759373b [2022-11-20 09:37:08,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:37:08,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:37:08,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:37:08,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:37:08,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:37:08,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:08" (1/1) ... [2022-11-20 09:37:08,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f187f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:08, skipping insertion in model container [2022-11-20 09:37:08,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:08" (1/1) ... [2022-11-20 09:37:08,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:37:08,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:37:08,848 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 09:37:08,856 INFO L158 Benchmark]: Toolchain (without parser) took 750.11ms. Allocated memory is still 169.9MB. Free memory was 127.4MB in the beginning and 86.7MB in the end (delta: 40.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-20 09:37:08,856 INFO L158 Benchmark]: CDTParser took 0.72ms. Allocated memory is still 169.9MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:37:08,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 747.92ms. Allocated memory is still 169.9MB. Free memory was 127.4MB in the beginning and 86.7MB in the end (delta: 40.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-20 09:37:08,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72ms. Allocated memory is still 169.9MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 747.92ms. Allocated memory is still 169.9MB. Free memory was 127.4MB in the beginning and 86.7MB in the end (delta: 40.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e --- 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 09:37:11,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:37:11,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:37:11,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:37:11,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:37:11,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:37:11,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:37:11,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:37:11,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:37:11,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:37:11,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:37:11,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:37:11,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:37:11,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:37:11,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:37:11,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:37:11,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:37:11,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:37:11,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:37:11,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:37:11,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:37:11,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:37:11,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:37:11,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:37:11,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:37:11,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:37:11,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:37:11,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:37:11,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:37:11,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:37:11,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:37:11,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:37:11,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:37:11,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:37:11,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:37:11,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:37:11,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:37:11,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:37:11,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:37:11,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:37:11,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:37:11,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 09:37:11,636 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:37:11,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:37:11,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:37:11,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:37:11,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:37:11,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:37:11,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:37:11,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:37:11,642 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:37:11,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:37:11,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:37:11,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:37:11,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:37:11,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:37:11,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:37:11,645 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 09:37:11,645 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 09:37:11,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:37:11,646 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:37:11,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:37:11,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:37:11,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:37:11,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:37:11,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:37:11,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:37:11,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:37:11,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:37:11,648 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 09:37:11,649 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 09:37:11,649 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:37:11,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:37:11,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:37:11,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 09:37:11,650 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_6fe53373-33e7-4d87-b867-535ec0732afe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e [2022-11-20 09:37:12,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:37:12,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:37:12,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:37:12,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:37:12,188 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:37:12,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-11-20 09:37:15,342 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:37:15,935 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:37:15,936 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-11-20 09:37:15,973 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/data/c69a41bed/9d8a47f8103247e59d88ebf5b14f4f45/FLAG6337f05dc [2022-11-20 09:37:15,993 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/data/c69a41bed/9d8a47f8103247e59d88ebf5b14f4f45 [2022-11-20 09:37:15,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:37:15,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:37:16,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:37:16,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:37:16,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:37:16,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:15" (1/1) ... [2022-11-20 09:37:16,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9d8bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:16, skipping insertion in model container [2022-11-20 09:37:16,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:15" (1/1) ... [2022-11-20 09:37:16,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:37:16,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:37:17,926 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_6fe53373-33e7-4d87-b867-535ec0732afe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2022-11-20 09:37:18,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:37:18,195 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 09:37:18,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:37:18,478 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_6fe53373-33e7-4d87-b867-535ec0732afe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2022-11-20 09:37:18,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:37:18,513 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:37:18,825 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_6fe53373-33e7-4d87-b867-535ec0732afe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2022-11-20 09:37:18,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:37:19,046 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:37:19,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19 WrapperNode [2022-11-20 09:37:19,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:37:19,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:37:19,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:37:19,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:37:19,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,390 INFO L138 Inliner]: procedures = 296, calls = 1511, calls flagged for inlining = 101, calls inlined = 84, statements flattened = 2602 [2022-11-20 09:37:19,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:37:19,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:37:19,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:37:19,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:37:19,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:37:19,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:37:19,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:37:19,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:37:19,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (1/1) ... [2022-11-20 09:37:19,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:37:19,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:19,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:19,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:37:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 09:37:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-20 09:37:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-20 09:37:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 09:37:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 09:37:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-20 09:37:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-20 09:37:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 09:37:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 09:37:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 09:37:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 09:37:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 09:37:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wdm_mutex [2022-11-20 09:37:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wdm_mutex [2022-11-20 09:37:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure recover_from_urb_loss [2022-11-20 09:37:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_from_urb_loss [2022-11-20 09:37:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-11-20 09:37:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-11-20 09:37:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 09:37:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 09:37:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-20 09:37:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-20 09:37:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-20 09:37:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-20 09:37:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-20 09:37:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-20 09:37:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_create [2022-11-20 09:37:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_create [2022-11-20 09:37:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 09:37:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 09:37:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 09:37:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 09:37:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_poll [2022-11-20 09:37:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_poll [2022-11-20 09:37:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 09:37:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 09:37:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 09:37:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 09:37:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 09:37:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 09:37:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 09:37:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 09:37:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure clear_wdm_read_flag [2022-11-20 09:37:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_wdm_read_flag [2022-11-20 09:37:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cancel_work_sync_39 [2022-11-20 09:37:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cancel_work_sync_39 [2022-11-20 09:37:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_write [2022-11-20 09:37:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_write [2022-11-20 09:37:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:37:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 09:37:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 09:37:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_ioctl [2022-11-20 09:37:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_ioctl [2022-11-20 09:37:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_disconnect [2022-11-20 09:37:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_disconnect [2022-11-20 09:37:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:37:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_rlock_of_wdm_device [2022-11-20 09:37:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_rlock_of_wdm_device [2022-11-20 09:37:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 09:37:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 09:37:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-20 09:37:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-20 09:37:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 09:37:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_rxwork [2022-11-20 09:37:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_rxwork [2022-11-20 09:37:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 09:37:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 09:37:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:37:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 09:37:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2022-11-20 09:37:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2022-11-20 09:37:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:37:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 09:37:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 09:37:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 09:37:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-20 09:37:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-20 09:37:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-20 09:37:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-20 09:37:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 09:37:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 09:37:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-20 09:37:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-20 09:37:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-20 09:37:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-20 09:37:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 09:37:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 09:37:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 09:37:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 09:37:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wdm_mutex [2022-11-20 09:37:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wdm_mutex [2022-11-20 09:37:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wlock_of_wdm_device [2022-11-20 09:37:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wlock_of_wdm_device [2022-11-20 09:37:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 09:37:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 09:37:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 09:37:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 09:37:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-20 09:37:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-20 09:37:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-20 09:37:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-20 09:37:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_flush [2022-11-20 09:37:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_flush [2022-11-20 09:37:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wlock_of_wdm_device [2022-11-20 09:37:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wlock_of_wdm_device [2022-11-20 09:37:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-20 09:37:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-20 09:37:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-20 09:37:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-20 09:37:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 09:37:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 09:37:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-20 09:37:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-20 09:37:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure kill_urbs [2022-11-20 09:37:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_urbs [2022-11-20 09:37:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-20 09:37:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-20 09:37:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 09:37:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 09:37:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 09:37:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 09:37:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 09:37:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 09:37:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 09:37:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 09:37:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 09:37:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 09:37:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 09:37:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 09:37:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 09:37:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_resume [2022-11-20 09:37:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_resume [2022-11-20 09:37:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:37:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 09:37:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 09:37:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 09:37:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 09:37:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:37:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 09:37:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 09:37:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:37:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 09:37:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 09:37:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 09:37:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 09:37:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-20 09:37:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-20 09:37:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 09:37:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 09:37:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_rlock_of_wdm_device [2022-11-20 09:37:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_rlock_of_wdm_device [2022-11-20 09:37:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-20 09:37:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-20 09:37:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_find_device [2022-11-20 09:37:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_find_device [2022-11-20 09:37:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 09:37:19,728 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 09:37:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 09:37:19,728 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 09:37:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-20 09:37:19,728 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-20 09:37:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-20 09:37:19,728 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-20 09:37:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:37:19,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:37:20,415 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:37:20,418 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:37:22,693 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 09:37:43,074 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:37:43,100 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:37:43,100 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:37:43,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:43 BoogieIcfgContainer [2022-11-20 09:37:43,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:37:43,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:37:43,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:37:43,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:37:43,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:37:15" (1/3) ... [2022-11-20 09:37:43,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8e7666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:37:43, skipping insertion in model container [2022-11-20 09:37:43,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:19" (2/3) ... [2022-11-20 09:37:43,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8e7666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:37:43, skipping insertion in model container [2022-11-20 09:37:43,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:43" (3/3) ... [2022-11-20 09:37:43,121 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-11-20 09:37:43,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:37:43,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:37:43,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:37:43,259 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74567630, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:37:43,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:37:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 1054 states, 681 states have (on average 1.302496328928047) internal successors, (887), 714 states have internal predecessors, (887), 301 states have call successors, (301), 71 states have call predecessors, (301), 70 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2022-11-20 09:37:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 09:37:43,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:43,308 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:43,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:43,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1355135188, now seen corresponding path program 1 times [2022-11-20 09:37:43,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:37:43,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534289972] [2022-11-20 09:37:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:43,339 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 09:37:43,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:37:43,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:43,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:44,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 09:37:44,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-11-20 09:37:44,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:37:44,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:37:44,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534289972] [2022-11-20 09:37:44,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534289972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:37:44,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:37:44,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:37:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6227276] [2022-11-20 09:37:44,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:37:44,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:37:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:37:44,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:37:44,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:37:44,985 INFO L87 Difference]: Start difference. First operand has 1054 states, 681 states have (on average 1.302496328928047) internal successors, (887), 714 states have internal predecessors, (887), 301 states have call successors, (301), 71 states have call predecessors, (301), 70 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 09:37:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:45,155 INFO L93 Difference]: Finished difference Result 2103 states and 3013 transitions. [2022-11-20 09:37:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:37:45,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 192 [2022-11-20 09:37:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:45,177 INFO L225 Difference]: With dead ends: 2103 [2022-11-20 09:37:45,177 INFO L226 Difference]: Without dead ends: 1042 [2022-11-20 09:37:45,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:37:45,194 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:45,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:37:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-11-20 09:37:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1042. [2022-11-20 09:37:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 676 states have (on average 1.2928994082840237) internal successors, (874), 702 states have internal predecessors, (874), 296 states have call successors, (296), 70 states have call predecessors, (296), 69 states have return successors, (282), 281 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-20 09:37:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1452 transitions. [2022-11-20 09:37:45,318 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1452 transitions. Word has length 192 [2022-11-20 09:37:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:45,319 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1452 transitions. [2022-11-20 09:37:45,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 09:37:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1452 transitions. [2022-11-20 09:37:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 09:37:45,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:45,325 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:45,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:45,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:45,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:45,550 INFO L85 PathProgramCache]: Analyzing trace with hash 786178530, now seen corresponding path program 1 times [2022-11-20 09:37:45,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:37:45,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355064796] [2022-11-20 09:37:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:45,553 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 09:37:45,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:37:45,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:45,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:47,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:37:47,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-11-20 09:37:47,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:37:47,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:37:47,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355064796] [2022-11-20 09:37:47,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355064796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:37:47,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:37:47,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:37:47,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401559435] [2022-11-20 09:37:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:37:47,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:37:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:37:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:37:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:37:47,362 INFO L87 Difference]: Start difference. First operand 1042 states and 1452 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 09:37:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:47,713 INFO L93 Difference]: Finished difference Result 2070 states and 2891 transitions. [2022-11-20 09:37:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:37:47,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 192 [2022-11-20 09:37:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:47,722 INFO L225 Difference]: With dead ends: 2070 [2022-11-20 09:37:47,722 INFO L226 Difference]: Without dead ends: 1043 [2022-11-20 09:37:47,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:37:47,728 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 3 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:47,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4331 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:37:47,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-20 09:37:47,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2022-11-20 09:37:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 677 states have (on average 1.292466765140325) internal successors, (875), 703 states have internal predecessors, (875), 296 states have call successors, (296), 70 states have call predecessors, (296), 69 states have return successors, (282), 281 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-20 09:37:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1453 transitions. [2022-11-20 09:37:47,781 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1453 transitions. Word has length 192 [2022-11-20 09:37:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:47,783 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1453 transitions. [2022-11-20 09:37:47,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 09:37:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1453 transitions. [2022-11-20 09:37:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 09:37:47,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:47,787 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:47,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:48,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:48,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:48,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1106102777, now seen corresponding path program 1 times [2022-11-20 09:37:48,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:37:48,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724761172] [2022-11-20 09:37:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:48,011 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 09:37:48,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:37:48,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:48,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:49,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:37:49,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2022-11-20 09:37:49,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:37:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-20 09:37:50,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:37:50,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724761172] [2022-11-20 09:37:50,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724761172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:37:50,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:37:50,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 09:37:50,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805932989] [2022-11-20 09:37:50,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:37:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:37:50,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:37:50,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:37:50,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:37:50,598 INFO L87 Difference]: Start difference. First operand 1043 states and 1453 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 09:37:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:51,702 INFO L93 Difference]: Finished difference Result 2081 states and 2910 transitions. [2022-11-20 09:37:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:37:51,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 201 [2022-11-20 09:37:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:51,711 INFO L225 Difference]: With dead ends: 2081 [2022-11-20 09:37:51,712 INFO L226 Difference]: Without dead ends: 1053 [2022-11-20 09:37:51,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:37:51,721 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 20 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:51,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 4325 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:37:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-11-20 09:37:51,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2022-11-20 09:37:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 686 states have (on average 1.293002915451895) internal successors, (887), 712 states have internal predecessors, (887), 296 states have call successors, (296), 71 states have call predecessors, (296), 70 states have return successors, (282), 281 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-20 09:37:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1465 transitions. [2022-11-20 09:37:51,780 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1465 transitions. Word has length 201 [2022-11-20 09:37:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:51,781 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1465 transitions. [2022-11-20 09:37:51,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 09:37:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1465 transitions. [2022-11-20 09:37:51,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-20 09:37:51,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:51,787 INFO L195 NwaCegarLoop]: trace histogram [28, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:51,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:52,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:52,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:52,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1875474782, now seen corresponding path program 2 times [2022-11-20 09:37:52,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:37:52,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621592255] [2022-11-20 09:37:52,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:37:52,017 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 09:37:52,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:37:52,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:52,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:53,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:37:53,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:37:53,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:37:53,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-11-20 09:37:53,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:37:53,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:37:53,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621592255] [2022-11-20 09:37:53,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621592255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:37:53,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:37:53,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:37:53,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008833857] [2022-11-20 09:37:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:37:53,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:37:53,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:37:53,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:37:53,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:37:53,267 INFO L87 Difference]: Start difference. First operand 1053 states and 1465 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-20 09:37:55,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:37:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:55,641 INFO L93 Difference]: Finished difference Result 3027 states and 4218 transitions. [2022-11-20 09:37:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:37:55,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 220 [2022-11-20 09:37:55,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:55,665 INFO L225 Difference]: With dead ends: 3027 [2022-11-20 09:37:55,666 INFO L226 Difference]: Without dead ends: 2026 [2022-11-20 09:37:55,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 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 09:37:55,674 INFO L413 NwaCegarLoop]: 1723 mSDtfsCounter, 1357 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:55,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 3156 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 09:37:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-11-20 09:37:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2016. [2022-11-20 09:37:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1318 states have (on average 1.295144157814871) internal successors, (1707), 1357 states have internal predecessors, (1707), 559 states have call successors, (559), 139 states have call predecessors, (559), 138 states have return successors, (545), 543 states have call predecessors, (545), 545 states have call successors, (545) [2022-11-20 09:37:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2811 transitions. [2022-11-20 09:37:55,807 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2811 transitions. Word has length 220 [2022-11-20 09:37:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:55,810 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2811 transitions. [2022-11-20 09:37:55,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-20 09:37:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2811 transitions. [2022-11-20 09:37:55,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-20 09:37:55,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:55,816 INFO L195 NwaCegarLoop]: trace histogram [28, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:55,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:56,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:56,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:56,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1346357405, now seen corresponding path program 1 times [2022-11-20 09:37:56,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:37:56,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085556830] [2022-11-20 09:37:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:56,035 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 09:37:56,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:37:56,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:56,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:37:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:57,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:37:58,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 192 proven. 10 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2022-11-20 09:37:58,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:38:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-20 09:38:00,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:00,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085556830] [2022-11-20 09:38:00,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085556830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:38:00,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:38:00,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 09:38:00,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194234680] [2022-11-20 09:38:00,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:38:00,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:38:00,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:38:00,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:38:00,404 INFO L87 Difference]: Start difference. First operand 2016 states and 2811 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:38:03,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:03,536 INFO L93 Difference]: Finished difference Result 4032 states and 5638 transitions. [2022-11-20 09:38:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:38:03,537 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 223 [2022-11-20 09:38:03,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:03,550 INFO L225 Difference]: With dead ends: 4032 [2022-11-20 09:38:03,551 INFO L226 Difference]: Without dead ends: 2028 [2022-11-20 09:38:03,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:38:03,561 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 55 mSDsluCounter, 8640 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 10090 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:03,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 10090 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 09:38:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-11-20 09:38:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2022. [2022-11-20 09:38:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1324 states have (on average 1.2945619335347431) internal successors, (1714), 1363 states have internal predecessors, (1714), 559 states have call successors, (559), 139 states have call predecessors, (559), 138 states have return successors, (545), 543 states have call predecessors, (545), 545 states have call successors, (545) [2022-11-20 09:38:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2818 transitions. [2022-11-20 09:38:03,702 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2818 transitions. Word has length 223 [2022-11-20 09:38:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:03,702 INFO L495 AbstractCegarLoop]: Abstraction has 2022 states and 2818 transitions. [2022-11-20 09:38:03,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:38:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2818 transitions. [2022-11-20 09:38:03,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-20 09:38:03,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:03,708 INFO L195 NwaCegarLoop]: trace histogram [48, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:03,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:03,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:03,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash -837590435, now seen corresponding path program 2 times [2022-11-20 09:38:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:03,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758670928] [2022-11-20 09:38:03,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:38:03,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:38:03,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:03,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:03,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:05,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:38:05,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:38:05,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:38:05,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2034 trivial. 0 not checked. [2022-11-20 09:38:05,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:38:05,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:05,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758670928] [2022-11-20 09:38:05,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758670928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:05,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:05,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:38:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114260485] [2022-11-20 09:38:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:05,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:38:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:05,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:38:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:38:05,301 INFO L87 Difference]: Start difference. First operand 2022 states and 2818 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 09:38:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:05,885 INFO L93 Difference]: Finished difference Result 5066 states and 6979 transitions. [2022-11-20 09:38:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:38:05,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 243 [2022-11-20 09:38:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:05,905 INFO L225 Difference]: With dead ends: 5066 [2022-11-20 09:38:05,905 INFO L226 Difference]: Without dead ends: 3102 [2022-11-20 09:38:05,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 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 09:38:05,914 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 780 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:05,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 2961 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:38:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-11-20 09:38:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3078. [2022-11-20 09:38:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 2019 states have (on average 1.2808320950965824) internal successors, (2586), 2064 states have internal predecessors, (2586), 818 states have call successors, (818), 241 states have call predecessors, (818), 240 states have return successors, (804), 800 states have call predecessors, (804), 804 states have call successors, (804) [2022-11-20 09:38:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 4208 transitions. [2022-11-20 09:38:06,090 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 4208 transitions. Word has length 243 [2022-11-20 09:38:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:06,091 INFO L495 AbstractCegarLoop]: Abstraction has 3078 states and 4208 transitions. [2022-11-20 09:38:06,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 09:38:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 4208 transitions. [2022-11-20 09:38:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-20 09:38:06,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:06,098 INFO L195 NwaCegarLoop]: trace histogram [48, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:06,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:06,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:06,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -176897740, now seen corresponding path program 1 times [2022-11-20 09:38:06,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:06,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659027008] [2022-11-20 09:38:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:06,327 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 09:38:06,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:06,329 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:06,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:09,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 2262 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:38:09,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 902 proven. 3 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2022-11-20 09:38:09,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:38:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 120 proven. 69 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2022-11-20 09:38:10,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:10,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659027008] [2022-11-20 09:38:10,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659027008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:38:10,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:38:10,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 09:38:10,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605409934] [2022-11-20 09:38:10,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:38:10,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:38:10,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:38:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:38:10,803 INFO L87 Difference]: Start difference. First operand 3078 states and 4208 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:38:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:11,937 INFO L93 Difference]: Finished difference Result 6126 states and 8380 transitions. [2022-11-20 09:38:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:38:11,938 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 264 [2022-11-20 09:38:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:11,957 INFO L225 Difference]: With dead ends: 6126 [2022-11-20 09:38:11,957 INFO L226 Difference]: Without dead ends: 3078 [2022-11-20 09:38:11,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:38:11,970 INFO L413 NwaCegarLoop]: 1444 mSDtfsCounter, 32 mSDsluCounter, 5747 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7191 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:11,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7191 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 09:38:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-11-20 09:38:12,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3078. [2022-11-20 09:38:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 2019 states have (on average 1.2788509162951955) internal successors, (2582), 2064 states have internal predecessors, (2582), 818 states have call successors, (818), 241 states have call predecessors, (818), 240 states have return successors, (804), 800 states have call predecessors, (804), 804 states have call successors, (804) [2022-11-20 09:38:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 4204 transitions. [2022-11-20 09:38:12,125 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 4204 transitions. Word has length 264 [2022-11-20 09:38:12,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:12,126 INFO L495 AbstractCegarLoop]: Abstraction has 3078 states and 4204 transitions. [2022-11-20 09:38:12,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:38:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 4204 transitions. [2022-11-20 09:38:12,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-20 09:38:12,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:12,131 INFO L195 NwaCegarLoop]: trace histogram [56, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:12,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:12,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:12,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1383032756, now seen corresponding path program 2 times [2022-11-20 09:38:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:12,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345199479] [2022-11-20 09:38:12,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:38:12,357 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 09:38:12,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:12,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:12,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:13,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:38:13,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:38:13,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:38:13,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2518 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2518 trivial. 0 not checked. [2022-11-20 09:38:13,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:38:13,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:13,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345199479] [2022-11-20 09:38:13,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345199479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:13,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:13,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:38:13,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232584932] [2022-11-20 09:38:13,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:13,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:38:13,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:13,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:38:13,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:38:13,712 INFO L87 Difference]: Start difference. First operand 3078 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 09:38:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:14,247 INFO L93 Difference]: Finished difference Result 7657 states and 10457 transitions. [2022-11-20 09:38:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:38:14,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 272 [2022-11-20 09:38:14,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:14,276 INFO L225 Difference]: With dead ends: 7657 [2022-11-20 09:38:14,277 INFO L226 Difference]: Without dead ends: 4647 [2022-11-20 09:38:14,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 270 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 09:38:14,289 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 999 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:14,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 3483 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:38:14,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2022-11-20 09:38:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4620. [2022-11-20 09:38:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 3060 states have (on average 1.2859477124183007) internal successors, (3935), 3133 states have internal predecessors, (3935), 1190 states have call successors, (1190), 370 states have call predecessors, (1190), 369 states have return successors, (1176), 1168 states have call predecessors, (1176), 1176 states have call successors, (1176) [2022-11-20 09:38:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 6301 transitions. [2022-11-20 09:38:14,588 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 6301 transitions. Word has length 272 [2022-11-20 09:38:14,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:14,589 INFO L495 AbstractCegarLoop]: Abstraction has 4620 states and 6301 transitions. [2022-11-20 09:38:14,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 09:38:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 6301 transitions. [2022-11-20 09:38:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-20 09:38:14,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:14,597 INFO L195 NwaCegarLoop]: trace histogram [56, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:14,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:14,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:14,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:14,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1426093493, now seen corresponding path program 1 times [2022-11-20 09:38:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:14,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208933806] [2022-11-20 09:38:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:14,822 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 09:38:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:14,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:14,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:19,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:38:19,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2616 trivial. 0 not checked. [2022-11-20 09:38:22,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:38:22,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:22,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208933806] [2022-11-20 09:38:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208933806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:22,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:22,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:38:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285131493] [2022-11-20 09:38:22,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:38:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:38:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:38:22,060 INFO L87 Difference]: Start difference. First operand 4620 states and 6301 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:22,254 INFO L93 Difference]: Finished difference Result 4622 states and 6302 transitions. [2022-11-20 09:38:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:38:22,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 268 [2022-11-20 09:38:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:22,289 INFO L225 Difference]: With dead ends: 4622 [2022-11-20 09:38:22,289 INFO L226 Difference]: Without dead ends: 4619 [2022-11-20 09:38:22,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 266 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 09:38:22,296 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 1363 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:22,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 1449 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:38:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4619 states. [2022-11-20 09:38:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4619 to 4619. [2022-11-20 09:38:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4619 states, 3060 states have (on average 1.2856209150326798) internal successors, (3934), 3132 states have internal predecessors, (3934), 1189 states have call successors, (1189), 370 states have call predecessors, (1189), 369 states have return successors, (1176), 1168 states have call predecessors, (1176), 1176 states have call successors, (1176) [2022-11-20 09:38:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4619 states to 4619 states and 6299 transitions. [2022-11-20 09:38:22,769 INFO L78 Accepts]: Start accepts. Automaton has 4619 states and 6299 transitions. Word has length 268 [2022-11-20 09:38:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:22,770 INFO L495 AbstractCegarLoop]: Abstraction has 4619 states and 6299 transitions. [2022-11-20 09:38:22,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4619 states and 6299 transitions. [2022-11-20 09:38:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-20 09:38:22,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:22,777 INFO L195 NwaCegarLoop]: trace histogram [56, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:22,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:22,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:22,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1259718745, now seen corresponding path program 1 times [2022-11-20 09:38:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:22,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116917958] [2022-11-20 09:38:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:22,999 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 09:38:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:23,001 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:23,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:27,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2324 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:38:27,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2616 trivial. 0 not checked. [2022-11-20 09:38:30,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:38:30,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:30,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116917958] [2022-11-20 09:38:30,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116917958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:30,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:30,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:38:30,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393959187] [2022-11-20 09:38:30,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:38:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:30,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:38:30,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:38:30,143 INFO L87 Difference]: Start difference. First operand 4619 states and 6299 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:30,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:30,440 INFO L93 Difference]: Finished difference Result 4621 states and 6300 transitions. [2022-11-20 09:38:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:38:30,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 269 [2022-11-20 09:38:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:30,480 INFO L225 Difference]: With dead ends: 4621 [2022-11-20 09:38:30,480 INFO L226 Difference]: Without dead ends: 4618 [2022-11-20 09:38:30,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 267 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 09:38:30,483 INFO L413 NwaCegarLoop]: 1447 mSDtfsCounter, 1360 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:30,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1447 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:38:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4618 states. [2022-11-20 09:38:30,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4618 to 4618. [2022-11-20 09:38:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 3060 states have (on average 1.285294117647059) internal successors, (3933), 3131 states have internal predecessors, (3933), 1188 states have call successors, (1188), 370 states have call predecessors, (1188), 369 states have return successors, (1176), 1168 states have call predecessors, (1176), 1176 states have call successors, (1176) [2022-11-20 09:38:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 6297 transitions. [2022-11-20 09:38:30,835 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 6297 transitions. Word has length 269 [2022-11-20 09:38:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:30,836 INFO L495 AbstractCegarLoop]: Abstraction has 4618 states and 6297 transitions. [2022-11-20 09:38:30,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 6297 transitions. [2022-11-20 09:38:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-20 09:38:30,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:30,842 INFO L195 NwaCegarLoop]: trace histogram [56, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:30,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:31,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:31,055 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash -397063986, now seen corresponding path program 1 times [2022-11-20 09:38:31,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:31,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715085584] [2022-11-20 09:38:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:31,058 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 09:38:31,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:31,060 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:31,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:35,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:38:35,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2616 trivial. 0 not checked. [2022-11-20 09:38:38,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:38:38,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:38,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715085584] [2022-11-20 09:38:38,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715085584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:38,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:38,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:38:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538541439] [2022-11-20 09:38:38,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:38,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:38:38,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:38:38,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:38:38,237 INFO L87 Difference]: Start difference. First operand 4618 states and 6297 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:38,541 INFO L93 Difference]: Finished difference Result 4620 states and 6298 transitions. [2022-11-20 09:38:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:38:38,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 270 [2022-11-20 09:38:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:38,566 INFO L225 Difference]: With dead ends: 4620 [2022-11-20 09:38:38,567 INFO L226 Difference]: Without dead ends: 4617 [2022-11-20 09:38:38,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 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 09:38:38,571 INFO L413 NwaCegarLoop]: 1445 mSDtfsCounter, 1357 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:38,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 1445 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:38:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4617 states. [2022-11-20 09:38:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4617 to 4617. [2022-11-20 09:38:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4617 states, 3060 states have (on average 1.284967320261438) internal successors, (3932), 3130 states have internal predecessors, (3932), 1187 states have call successors, (1187), 370 states have call predecessors, (1187), 369 states have return successors, (1176), 1168 states have call predecessors, (1176), 1176 states have call successors, (1176) [2022-11-20 09:38:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 6295 transitions. [2022-11-20 09:38:38,957 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 6295 transitions. Word has length 270 [2022-11-20 09:38:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:38,958 INFO L495 AbstractCegarLoop]: Abstraction has 4617 states and 6295 transitions. [2022-11-20 09:38:38,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 6295 transitions. [2022-11-20 09:38:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-20 09:38:38,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:38,960 INFO L195 NwaCegarLoop]: trace histogram [56, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:39,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:39,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:39,183 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:39,184 INFO L85 PathProgramCache]: Analyzing trace with hash 575434634, now seen corresponding path program 1 times [2022-11-20 09:38:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:39,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799049940] [2022-11-20 09:38:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:39,185 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 09:38:39,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:39,186 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:39,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:43,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:38:43,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2616 trivial. 0 not checked. [2022-11-20 09:38:46,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:38:46,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:46,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799049940] [2022-11-20 09:38:46,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799049940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:46,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:46,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:38:46,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732478312] [2022-11-20 09:38:46,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:46,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:38:46,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:46,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:38:46,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:38:46,199 INFO L87 Difference]: Start difference. First operand 4617 states and 6295 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:46,884 INFO L93 Difference]: Finished difference Result 13462 states and 18377 transitions. [2022-11-20 09:38:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:38:46,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 271 [2022-11-20 09:38:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:46,933 INFO L225 Difference]: With dead ends: 13462 [2022-11-20 09:38:46,933 INFO L226 Difference]: Without dead ends: 8917 [2022-11-20 09:38:46,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 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 09:38:46,951 INFO L413 NwaCegarLoop]: 1957 mSDtfsCounter, 1313 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:46,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 3288 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:38:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8917 states. [2022-11-20 09:38:47,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8917 to 8881. [2022-11-20 09:38:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8881 states, 5918 states have (on average 1.2891179452517743) internal successors, (7629), 6062 states have internal predecessors, (7629), 2247 states have call successors, (2247), 725 states have call predecessors, (2247), 715 states have return successors, (2234), 2190 states have call predecessors, (2234), 2234 states have call successors, (2234) [2022-11-20 09:38:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8881 states to 8881 states and 12110 transitions. [2022-11-20 09:38:47,921 INFO L78 Accepts]: Start accepts. Automaton has 8881 states and 12110 transitions. Word has length 271 [2022-11-20 09:38:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:47,922 INFO L495 AbstractCegarLoop]: Abstraction has 8881 states and 12110 transitions. [2022-11-20 09:38:47,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8881 states and 12110 transitions. [2022-11-20 09:38:47,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-20 09:38:47,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:47,925 INFO L195 NwaCegarLoop]: trace histogram [56, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:47,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:48,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:48,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:48,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 658125649, now seen corresponding path program 1 times [2022-11-20 09:38:48,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:48,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951186328] [2022-11-20 09:38:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:48,150 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 09:38:48,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:48,152 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:48,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:53,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2327 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:38:53,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2616 trivial. 0 not checked. [2022-11-20 09:38:55,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:38:55,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:38:55,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951186328] [2022-11-20 09:38:55,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951186328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:55,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:55,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:38:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852808168] [2022-11-20 09:38:55,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:55,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:38:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:38:55,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:38:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:38:55,472 INFO L87 Difference]: Start difference. First operand 8881 states and 12110 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:56,374 INFO L93 Difference]: Finished difference Result 9815 states and 12990 transitions. [2022-11-20 09:38:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:38:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 272 [2022-11-20 09:38:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:56,418 INFO L225 Difference]: With dead ends: 9815 [2022-11-20 09:38:56,418 INFO L226 Difference]: Without dead ends: 9811 [2022-11-20 09:38:56,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 270 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 09:38:56,424 INFO L413 NwaCegarLoop]: 1480 mSDtfsCounter, 1156 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:56,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1809 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:38:56,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9811 states. [2022-11-20 09:38:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9811 to 9805. [2022-11-20 09:38:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9805 states, 6570 states have (on average 1.2703196347031964) internal successors, (8346), 6708 states have internal predecessors, (8346), 2317 states have call successors, (2317), 931 states have call predecessors, (2317), 917 states have return successors, (2306), 2262 states have call predecessors, (2306), 2306 states have call successors, (2306) [2022-11-20 09:38:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9805 states to 9805 states and 12969 transitions. [2022-11-20 09:38:57,401 INFO L78 Accepts]: Start accepts. Automaton has 9805 states and 12969 transitions. Word has length 272 [2022-11-20 09:38:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:57,402 INFO L495 AbstractCegarLoop]: Abstraction has 9805 states and 12969 transitions. [2022-11-20 09:38:57,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:38:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9805 states and 12969 transitions. [2022-11-20 09:38:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-20 09:38:57,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:57,405 INFO L195 NwaCegarLoop]: trace histogram [56, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:57,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:57,631 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:57,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1073415315, now seen corresponding path program 1 times [2022-11-20 09:38:57,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:38:57,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126331639] [2022-11-20 09:38:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:57,634 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 09:38:57,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:38:57,636 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:38:57,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:02,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:39:02,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:39:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2616 trivial. 0 not checked. [2022-11-20 09:39:04,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:39:04,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:39:04,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126331639] [2022-11-20 09:39:04,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126331639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:39:04,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:39:04,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:39:04,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798236356] [2022-11-20 09:39:04,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:39:04,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:39:04,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:39:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:39:04,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:39:04,683 INFO L87 Difference]: Start difference. First operand 9805 states and 12969 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:39:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:39:05,902 INFO L93 Difference]: Finished difference Result 27710 states and 36878 transitions. [2022-11-20 09:39:05,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:39:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 273 [2022-11-20 09:39:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:39:05,978 INFO L225 Difference]: With dead ends: 27710 [2022-11-20 09:39:05,978 INFO L226 Difference]: Without dead ends: 17967 [2022-11-20 09:39:06,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 271 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 09:39:06,013 INFO L413 NwaCegarLoop]: 1723 mSDtfsCounter, 1303 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:39:06,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 2981 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:39:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17967 states. [2022-11-20 09:39:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17967 to 17812. [2022-11-20 09:39:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17812 states, 12001 states have (on average 1.2789767519373385) internal successors, (15349), 12284 states have internal predecessors, (15349), 4176 states have call successors, (4176), 1679 states have call predecessors, (4176), 1634 states have return successors, (4194), 4021 states have call predecessors, (4194), 4162 states have call successors, (4194) [2022-11-20 09:39:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17812 states to 17812 states and 23719 transitions. [2022-11-20 09:39:08,217 INFO L78 Accepts]: Start accepts. Automaton has 17812 states and 23719 transitions. Word has length 273 [2022-11-20 09:39:08,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:39:08,218 INFO L495 AbstractCegarLoop]: Abstraction has 17812 states and 23719 transitions. [2022-11-20 09:39:08,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 09:39:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 17812 states and 23719 transitions. [2022-11-20 09:39:08,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-20 09:39:08,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:39:08,229 INFO L195 NwaCegarLoop]: trace histogram [56, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:39:08,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:08,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:08,443 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:39:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:39:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1009995173, now seen corresponding path program 1 times [2022-11-20 09:39:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:39:08,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561361865] [2022-11-20 09:39:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:39:08,447 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 09:39:08,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:39:08,449 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:08,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:13,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:39:13,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:39:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2619 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2616 trivial. 0 not checked. [2022-11-20 09:39:14,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:39:14,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:39:14,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561361865] [2022-11-20 09:39:14,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561361865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:39:14,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:39:14,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:39:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938948706] [2022-11-20 09:39:14,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:39:14,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:39:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:39:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:39:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:39:14,052 INFO L87 Difference]: Start difference. First operand 17812 states and 23719 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:39:16,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:39:17,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:39:17,147 INFO L93 Difference]: Finished difference Result 26981 states and 35897 transitions. [2022-11-20 09:39:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:39:17,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 325 [2022-11-20 09:39:17,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:39:17,185 INFO L225 Difference]: With dead ends: 26981 [2022-11-20 09:39:17,186 INFO L226 Difference]: Without dead ends: 9239 [2022-11-20 09:39:17,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 323 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 09:39:17,237 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 12 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:39:17,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2888 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 09:39:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2022-11-20 09:39:18,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 9131. [2022-11-20 09:39:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9131 states, 6159 states have (on average 1.278941386588732) internal successors, (7877), 6305 states have internal predecessors, (7877), 2132 states have call successors, (2132), 863 states have call predecessors, (2132), 839 states have return successors, (2134), 2050 states have call predecessors, (2134), 2118 states have call successors, (2134) [2022-11-20 09:39:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9131 states to 9131 states and 12143 transitions. [2022-11-20 09:39:18,077 INFO L78 Accepts]: Start accepts. Automaton has 9131 states and 12143 transitions. Word has length 325 [2022-11-20 09:39:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:39:18,079 INFO L495 AbstractCegarLoop]: Abstraction has 9131 states and 12143 transitions. [2022-11-20 09:39:18,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:39:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 9131 states and 12143 transitions. [2022-11-20 09:39:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-11-20 09:39:18,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:39:18,086 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:39:18,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:18,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:18,299 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:39:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:39:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 394835458, now seen corresponding path program 1 times [2022-11-20 09:39:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:39:18,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525909055] [2022-11-20 09:39:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:39:18,302 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 09:39:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:39:18,303 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:18,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:23,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:39:23,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:39:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2857 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 2630 trivial. 0 not checked. [2022-11-20 09:39:24,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:39:24,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:39:24,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525909055] [2022-11-20 09:39:24,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525909055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:39:24,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:39:24,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:39:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759738527] [2022-11-20 09:39:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:39:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:39:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:39:24,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:39:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:39:24,299 INFO L87 Difference]: Start difference. First operand 9131 states and 12143 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 09:39:26,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:39:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:39:27,989 INFO L93 Difference]: Finished difference Result 22632 states and 30010 transitions. [2022-11-20 09:39:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:39:27,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 333 [2022-11-20 09:39:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:39:28,058 INFO L225 Difference]: With dead ends: 22632 [2022-11-20 09:39:28,058 INFO L226 Difference]: Without dead ends: 13679 [2022-11-20 09:39:28,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 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 09:39:28,096 INFO L413 NwaCegarLoop]: 2010 mSDtfsCounter, 1078 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:39:28,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 3329 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 09:39:28,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13679 states. [2022-11-20 09:39:29,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13679 to 13533. [2022-11-20 09:39:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13533 states, 9180 states have (on average 1.2746187363834423) internal successors, (11701), 9392 states have internal predecessors, (11701), 3066 states have call successors, (3066), 1322 states have call predecessors, (3066), 1286 states have return successors, (3068), 2951 states have call predecessors, (3068), 3052 states have call successors, (3068) [2022-11-20 09:39:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 17835 transitions. [2022-11-20 09:39:29,553 INFO L78 Accepts]: Start accepts. Automaton has 13533 states and 17835 transitions. Word has length 333 [2022-11-20 09:39:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:39:29,554 INFO L495 AbstractCegarLoop]: Abstraction has 13533 states and 17835 transitions. [2022-11-20 09:39:29,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 09:39:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 13533 states and 17835 transitions. [2022-11-20 09:39:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-20 09:39:29,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:39:29,561 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:39:29,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:39:29,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:29,787 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:39:29,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:39:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash -726945743, now seen corresponding path program 1 times [2022-11-20 09:39:29,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:39:29,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534835035] [2022-11-20 09:39:29,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:39:29,789 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 09:39:29,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:39:29,790 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:29,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 09:39:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:35,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:39:35,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:39:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2857 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2022-11-20 09:39:35,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:39:35,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:39:35,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534835035] [2022-11-20 09:39:35,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534835035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:39:35,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:39:35,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:39:35,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971612625] [2022-11-20 09:39:35,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:39:35,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:39:35,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:39:35,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:39:35,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:39:35,453 INFO L87 Difference]: Start difference. First operand 13533 states and 17835 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 09:39:37,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:39:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:39:38,347 INFO L93 Difference]: Finished difference Result 13541 states and 17841 transitions. [2022-11-20 09:39:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:39:38,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 342 [2022-11-20 09:39:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:39:38,410 INFO L225 Difference]: With dead ends: 13541 [2022-11-20 09:39:38,410 INFO L226 Difference]: Without dead ends: 13538 [2022-11-20 09:39:38,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 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 09:39:38,422 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 304 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:39:38,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 2770 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 09:39:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13538 states. [2022-11-20 09:39:39,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13538 to 13532. [2022-11-20 09:39:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13532 states, 9180 states have (on average 1.2732026143790849) internal successors, (11688), 9391 states have internal predecessors, (11688), 3065 states have call successors, (3065), 1322 states have call predecessors, (3065), 1286 states have return successors, (3068), 2951 states have call predecessors, (3068), 3052 states have call successors, (3068) [2022-11-20 09:39:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13532 states to 13532 states and 17821 transitions. [2022-11-20 09:39:39,586 INFO L78 Accepts]: Start accepts. Automaton has 13532 states and 17821 transitions. Word has length 342 [2022-11-20 09:39:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:39:39,587 INFO L495 AbstractCegarLoop]: Abstraction has 13532 states and 17821 transitions. [2022-11-20 09:39:39,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 09:39:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 13532 states and 17821 transitions. [2022-11-20 09:39:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-20 09:39:39,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:39:39,595 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:39:39,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:39:39,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:39,812 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:39:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:39:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2044206482, now seen corresponding path program 1 times [2022-11-20 09:39:39,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:39:39,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695231713] [2022-11-20 09:39:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:39:39,814 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 09:39:39,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:39:39,815 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:39,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 09:39:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:45,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:39:45,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:39:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2857 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2022-11-20 09:39:46,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:39:46,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:39:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695231713] [2022-11-20 09:39:46,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695231713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:39:46,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:39:46,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:39:46,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504026654] [2022-11-20 09:39:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:39:46,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:39:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:39:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:39:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:39:46,163 INFO L87 Difference]: Start difference. First operand 13532 states and 17821 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 09:39:48,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:39:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:39:49,933 INFO L93 Difference]: Finished difference Result 31639 states and 41695 transitions. [2022-11-20 09:39:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:39:49,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 358 [2022-11-20 09:39:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:39:50,011 INFO L225 Difference]: With dead ends: 31639 [2022-11-20 09:39:50,012 INFO L226 Difference]: Without dead ends: 18285 [2022-11-20 09:39:50,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 356 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 09:39:50,047 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 1098 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:39:50,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 3129 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 09:39:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18285 states. [2022-11-20 09:39:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18285 to 18228. [2022-11-20 09:39:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18228 states, 12478 states have (on average 1.2772078858791474) internal successors, (15937), 12783 states have internal predecessors, (15937), 4003 states have call successors, (4003), 1786 states have call predecessors, (4003), 1746 states have return successors, (4014), 3855 states have call predecessors, (4014), 3990 states have call successors, (4014) [2022-11-20 09:39:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18228 states to 18228 states and 23954 transitions. [2022-11-20 09:39:51,505 INFO L78 Accepts]: Start accepts. Automaton has 18228 states and 23954 transitions. Word has length 358 [2022-11-20 09:39:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:39:51,506 INFO L495 AbstractCegarLoop]: Abstraction has 18228 states and 23954 transitions. [2022-11-20 09:39:51,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 09:39:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 18228 states and 23954 transitions. [2022-11-20 09:39:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-20 09:39:51,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:39:51,514 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:39:51,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:39:51,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:51,728 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:39:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:39:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1743928025, now seen corresponding path program 1 times [2022-11-20 09:39:51,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:39:51,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517923045] [2022-11-20 09:39:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:39:51,730 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 09:39:51,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:39:51,732 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:39:51,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 09:39:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:39:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:39:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2860 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2022-11-20 09:39:57,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:39:57,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:39:57,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517923045] [2022-11-20 09:39:57,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517923045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:39:57,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:39:57,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:39:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346054522] [2022-11-20 09:39:57,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:39:57,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:39:57,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:39:57,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:39:57,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:39:57,425 INFO L87 Difference]: Start difference. First operand 18228 states and 23954 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 09:40:00,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:40:00,255 INFO L93 Difference]: Finished difference Result 40905 states and 55151 transitions. [2022-11-20 09:40:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:40:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 366 [2022-11-20 09:40:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:40:00,332 INFO L225 Difference]: With dead ends: 40905 [2022-11-20 09:40:00,332 INFO L226 Difference]: Without dead ends: 22855 [2022-11-20 09:40:00,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:40:00,375 INFO L413 NwaCegarLoop]: 1745 mSDtfsCounter, 964 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 6163 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:40:00,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 6163 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:40:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22855 states. [2022-11-20 09:40:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22855 to 18276. [2022-11-20 09:40:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18276 states, 12514 states have (on average 1.2764104203292312) internal successors, (15973), 12819 states have internal predecessors, (15973), 4015 states have call successors, (4015), 1786 states have call predecessors, (4015), 1746 states have return successors, (4026), 3867 states have call predecessors, (4026), 4002 states have call successors, (4026) [2022-11-20 09:40:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18276 states to 18276 states and 24014 transitions. [2022-11-20 09:40:02,088 INFO L78 Accepts]: Start accepts. Automaton has 18276 states and 24014 transitions. Word has length 366 [2022-11-20 09:40:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:40:02,089 INFO L495 AbstractCegarLoop]: Abstraction has 18276 states and 24014 transitions. [2022-11-20 09:40:02,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 09:40:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 18276 states and 24014 transitions. [2022-11-20 09:40:02,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-20 09:40:02,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:40:02,097 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:40:02,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 09:40:02,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:02,319 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:40:02,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:40:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1683675374, now seen corresponding path program 1 times [2022-11-20 09:40:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:40:02,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062439808] [2022-11-20 09:40:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:40:02,321 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 09:40:02,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:40:02,322 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:02,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 09:40:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:40:08,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 09:40:08,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:40:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2857 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2022-11-20 09:40:08,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:40:08,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:40:08,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062439808] [2022-11-20 09:40:08,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062439808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:40:08,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:40:08,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:40:08,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342122647] [2022-11-20 09:40:08,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:40:08,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:40:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:40:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:40:08,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:40:08,588 INFO L87 Difference]: Start difference. First operand 18276 states and 24014 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 09:40:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:40:10,372 INFO L93 Difference]: Finished difference Result 36662 states and 48245 transitions. [2022-11-20 09:40:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:40:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 373 [2022-11-20 09:40:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:40:10,448 INFO L225 Difference]: With dead ends: 36662 [2022-11-20 09:40:10,448 INFO L226 Difference]: Without dead ends: 18564 [2022-11-20 09:40:10,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:40:10,501 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 5 mSDsluCounter, 8627 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10068 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:40:10,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10068 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:40:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18564 states. [2022-11-20 09:40:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18564 to 18540. [2022-11-20 09:40:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18540 states, 12706 states have (on average 1.2722335904297182) internal successors, (16165), 13035 states have internal predecessors, (16165), 4015 states have call successors, (4015), 1786 states have call predecessors, (4015), 1818 states have return successors, (4154), 3915 states have call predecessors, (4154), 4002 states have call successors, (4154) [2022-11-20 09:40:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18540 states to 18540 states and 24334 transitions. [2022-11-20 09:40:12,568 INFO L78 Accepts]: Start accepts. Automaton has 18540 states and 24334 transitions. Word has length 373 [2022-11-20 09:40:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:40:12,568 INFO L495 AbstractCegarLoop]: Abstraction has 18540 states and 24334 transitions. [2022-11-20 09:40:12,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 09:40:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 18540 states and 24334 transitions. [2022-11-20 09:40:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-20 09:40:12,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:40:12,580 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:40:12,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 09:40:12,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:12,795 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:40:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:40:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1140968776, now seen corresponding path program 1 times [2022-11-20 09:40:12,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:40:12,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025550457] [2022-11-20 09:40:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:40:12,798 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 09:40:12,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:40:12,798 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:12,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 09:40:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:40:18,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:40:18,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:40:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2860 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2022-11-20 09:40:18,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:40:18,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:40:18,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025550457] [2022-11-20 09:40:18,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025550457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:40:18,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:40:18,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:40:18,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650204463] [2022-11-20 09:40:18,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:40:18,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:40:18,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:40:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:40:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:40:18,291 INFO L87 Difference]: Start difference. First operand 18540 states and 24334 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:40:20,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:40:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:40:22,154 INFO L93 Difference]: Finished difference Result 36914 states and 48468 transitions. [2022-11-20 09:40:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:40:22,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 368 [2022-11-20 09:40:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:40:22,218 INFO L225 Difference]: With dead ends: 36914 [2022-11-20 09:40:22,219 INFO L226 Difference]: Without dead ends: 18552 [2022-11-20 09:40:22,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 366 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 09:40:22,264 INFO L413 NwaCegarLoop]: 2485 mSDtfsCounter, 1244 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:40:22,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 3868 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 09:40:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18552 states. [2022-11-20 09:40:24,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18552 to 18409. [2022-11-20 09:40:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18409 states, 12611 states have (on average 1.269923083022758) internal successors, (16015), 12944 states have internal predecessors, (16015), 3996 states have call successors, (3996), 1766 states have call predecessors, (3996), 1801 states have return successors, (4095), 3895 states have call predecessors, (4095), 3967 states have call successors, (4095) [2022-11-20 09:40:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18409 states to 18409 states and 24106 transitions. [2022-11-20 09:40:24,265 INFO L78 Accepts]: Start accepts. Automaton has 18409 states and 24106 transitions. Word has length 368 [2022-11-20 09:40:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:40:24,266 INFO L495 AbstractCegarLoop]: Abstraction has 18409 states and 24106 transitions. [2022-11-20 09:40:24,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:40:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 18409 states and 24106 transitions. [2022-11-20 09:40:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-20 09:40:24,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:40:24,277 INFO L195 NwaCegarLoop]: trace histogram [56, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:40:24,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 09:40:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:24,492 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:40:24,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:40:24,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1148000354, now seen corresponding path program 1 times [2022-11-20 09:40:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:40:24,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695338825] [2022-11-20 09:40:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:40:24,496 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 09:40:24,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:40:24,500 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:24,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 09:40:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:40:30,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:40:30,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:40:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2897 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2897 trivial. 0 not checked. [2022-11-20 09:40:30,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:40:30,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:40:30,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695338825] [2022-11-20 09:40:30,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695338825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:40:30,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:40:30,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:40:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888610480] [2022-11-20 09:40:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:40:30,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:40:30,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:40:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:40:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:40:30,393 INFO L87 Difference]: Start difference. First operand 18409 states and 24106 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 09:40:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:40:32,329 INFO L93 Difference]: Finished difference Result 18990 states and 24614 transitions. [2022-11-20 09:40:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:40:32,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 379 [2022-11-20 09:40:32,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:40:32,376 INFO L225 Difference]: With dead ends: 18990 [2022-11-20 09:40:32,376 INFO L226 Difference]: Without dead ends: 17757 [2022-11-20 09:40:32,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:40:32,383 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 12 mSDsluCounter, 4306 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:40:32,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5752 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:40:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17757 states. [2022-11-20 09:40:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17757 to 17709. [2022-11-20 09:40:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17709 states, 12204 states have (on average 1.2680268764339562) internal successors, (15475), 12490 states have internal predecessors, (15475), 3740 states have call successors, (3740), 1729 states have call predecessors, (3740), 1764 states have return successors, (3841), 3674 states have call predecessors, (3841), 3713 states have call successors, (3841) [2022-11-20 09:40:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17709 states to 17709 states and 23056 transitions. [2022-11-20 09:40:34,431 INFO L78 Accepts]: Start accepts. Automaton has 17709 states and 23056 transitions. Word has length 379 [2022-11-20 09:40:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:40:34,431 INFO L495 AbstractCegarLoop]: Abstraction has 17709 states and 23056 transitions. [2022-11-20 09:40:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 09:40:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 17709 states and 23056 transitions. [2022-11-20 09:40:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-11-20 09:40:34,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:40:34,445 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:40:34,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 09:40:34,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:34,660 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:40:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:40:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash 508318801, now seen corresponding path program 1 times [2022-11-20 09:40:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:40:34,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075312678] [2022-11-20 09:40:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:40:34,663 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 09:40:34,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:40:34,665 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:34,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 09:40:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:40:40,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:40:40,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:40:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2867 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2022-11-20 09:40:40,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:40:40,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:40:40,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075312678] [2022-11-20 09:40:40,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075312678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:40:40,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:40:40,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:40:40,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862007072] [2022-11-20 09:40:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:40:40,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:40:40,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:40:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:40:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:40:40,439 INFO L87 Difference]: Start difference. First operand 17709 states and 23056 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 09:40:42,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:40:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:40:46,176 INFO L93 Difference]: Finished difference Result 41818 states and 54508 transitions. [2022-11-20 09:40:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:40:46,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 370 [2022-11-20 09:40:46,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:40:46,244 INFO L225 Difference]: With dead ends: 41818 [2022-11-20 09:40:46,244 INFO L226 Difference]: Without dead ends: 24287 [2022-11-20 09:40:46,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:40:46,271 INFO L413 NwaCegarLoop]: 2489 mSDtfsCounter, 1639 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 241 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 8296 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:40:46,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 8296 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 102 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 09:40:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24287 states. [2022-11-20 09:40:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24287 to 17745. [2022-11-20 09:40:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17745 states, 12240 states have (on average 1.2672385620915032) internal successors, (15511), 12526 states have internal predecessors, (15511), 3740 states have call successors, (3740), 1729 states have call predecessors, (3740), 1764 states have return successors, (3841), 3674 states have call predecessors, (3841), 3713 states have call successors, (3841) [2022-11-20 09:40:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17745 states to 17745 states and 23092 transitions. [2022-11-20 09:40:48,425 INFO L78 Accepts]: Start accepts. Automaton has 17745 states and 23092 transitions. Word has length 370 [2022-11-20 09:40:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:40:48,426 INFO L495 AbstractCegarLoop]: Abstraction has 17745 states and 23092 transitions. [2022-11-20 09:40:48,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 09:40:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 17745 states and 23092 transitions. [2022-11-20 09:40:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-20 09:40:48,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:40:48,435 INFO L195 NwaCegarLoop]: trace histogram [56, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:40:48,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 09:40:48,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:48,651 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:40:48,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:40:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2011696772, now seen corresponding path program 1 times [2022-11-20 09:40:48,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:40:48,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499938861] [2022-11-20 09:40:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:40:48,654 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 09:40:48,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:40:48,655 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:48,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 09:40:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:40:54,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:40:54,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:40:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2897 trivial. 0 not checked. [2022-11-20 09:40:54,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:40:54,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:40:54,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499938861] [2022-11-20 09:40:54,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499938861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:40:54,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:40:54,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:40:54,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243931344] [2022-11-20 09:40:54,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:40:54,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:40:54,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:40:54,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:40:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:40:54,426 INFO L87 Difference]: Start difference. First operand 17745 states and 23092 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 09:40:56,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:40:56,655 INFO L93 Difference]: Finished difference Result 35468 states and 46165 transitions. [2022-11-20 09:40:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:40:56,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 394 [2022-11-20 09:40:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:40:56,706 INFO L225 Difference]: With dead ends: 35468 [2022-11-20 09:40:56,706 INFO L226 Difference]: Without dead ends: 17901 [2022-11-20 09:40:56,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:40:56,741 INFO L413 NwaCegarLoop]: 1447 mSDtfsCounter, 125 mSDsluCounter, 4150 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:40:56,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5597 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:40:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17901 states. [2022-11-20 09:40:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17901 to 17709. [2022-11-20 09:40:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17709 states, 12216 states have (on average 1.266781270464964) internal successors, (15475), 12490 states have internal predecessors, (15475), 3740 states have call successors, (3740), 1729 states have call predecessors, (3740), 1752 states have return successors, (3817), 3674 states have call predecessors, (3817), 3713 states have call successors, (3817) [2022-11-20 09:40:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17709 states to 17709 states and 23032 transitions. [2022-11-20 09:40:59,023 INFO L78 Accepts]: Start accepts. Automaton has 17709 states and 23032 transitions. Word has length 394 [2022-11-20 09:40:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:40:59,024 INFO L495 AbstractCegarLoop]: Abstraction has 17709 states and 23032 transitions. [2022-11-20 09:40:59,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 09:40:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 17709 states and 23032 transitions. [2022-11-20 09:40:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-20 09:40:59,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:40:59,030 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:40:59,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 09:40:59,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:59,249 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:40:59,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:40:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1319915121, now seen corresponding path program 1 times [2022-11-20 09:40:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:40:59,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469794883] [2022-11-20 09:40:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:40:59,251 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 09:40:59,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:40:59,252 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:40:59,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 09:41:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:41:04,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:41:04,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:41:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2867 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2022-11-20 09:41:05,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:41:05,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:41:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469794883] [2022-11-20 09:41:05,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469794883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:41:05,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:41:05,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:41:05,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878048252] [2022-11-20 09:41:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:41:05,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:41:05,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:41:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:41:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:41:05,160 INFO L87 Difference]: Start difference. First operand 17709 states and 23032 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 09:41:07,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:41:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:41:11,002 INFO L93 Difference]: Finished difference Result 42062 states and 54499 transitions. [2022-11-20 09:41:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:41:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 386 [2022-11-20 09:41:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:41:11,077 INFO L225 Difference]: With dead ends: 42062 [2022-11-20 09:41:11,077 INFO L226 Difference]: Without dead ends: 24531 [2022-11-20 09:41:11,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:41:11,114 INFO L413 NwaCegarLoop]: 2499 mSDtfsCounter, 1465 mSDsluCounter, 5991 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 129 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 8490 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:41:11,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 8490 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 93 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 09:41:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24531 states. [2022-11-20 09:41:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24531 to 17781. [2022-11-20 09:41:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17781 states, 12264 states have (on average 1.265737116764514) internal successors, (15523), 12538 states have internal predecessors, (15523), 3764 states have call successors, (3764), 1729 states have call predecessors, (3764), 1752 states have return successors, (3841), 3698 states have call predecessors, (3841), 3737 states have call successors, (3841) [2022-11-20 09:41:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17781 states to 17781 states and 23128 transitions. [2022-11-20 09:41:13,324 INFO L78 Accepts]: Start accepts. Automaton has 17781 states and 23128 transitions. Word has length 386 [2022-11-20 09:41:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:41:13,324 INFO L495 AbstractCegarLoop]: Abstraction has 17781 states and 23128 transitions. [2022-11-20 09:41:13,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 09:41:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 17781 states and 23128 transitions. [2022-11-20 09:41:13,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-20 09:41:13,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:41:13,329 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:13,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 09:41:13,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:41:13,530 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:41:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1955447950, now seen corresponding path program 1 times [2022-11-20 09:41:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:41:13,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605661228] [2022-11-20 09:41:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:13,533 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 09:41:13,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:41:13,534 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:41:13,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 09:41:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:41:19,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:41:19,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:41:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2867 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2022-11-20 09:41:19,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:41:19,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:41:19,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605661228] [2022-11-20 09:41:19,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605661228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:41:19,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:41:19,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:41:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759024384] [2022-11-20 09:41:19,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:41:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:41:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:41:19,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:41:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:41:19,765 INFO L87 Difference]: Start difference. First operand 17781 states and 23128 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 09:41:21,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:41:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:41:27,952 INFO L93 Difference]: Finished difference Result 42094 states and 54784 transitions. [2022-11-20 09:41:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:41:27,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 392 [2022-11-20 09:41:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:41:28,015 INFO L225 Difference]: With dead ends: 42094 [2022-11-20 09:41:28,015 INFO L226 Difference]: Without dead ends: 24491 [2022-11-20 09:41:28,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:41:28,045 INFO L413 NwaCegarLoop]: 2486 mSDtfsCounter, 1626 mSDsluCounter, 13250 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 248 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 15736 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:41:28,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 15736 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 419 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 09:41:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24491 states. [2022-11-20 09:41:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24491 to 17829. [2022-11-20 09:41:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17829 states, 12300 states have (on average 1.2649593495934959) internal successors, (15559), 12574 states have internal predecessors, (15559), 3764 states have call successors, (3764), 1729 states have call predecessors, (3764), 1764 states have return successors, (3853), 3710 states have call predecessors, (3853), 3737 states have call successors, (3853) [2022-11-20 09:41:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17829 states to 17829 states and 23176 transitions. [2022-11-20 09:41:30,179 INFO L78 Accepts]: Start accepts. Automaton has 17829 states and 23176 transitions. Word has length 392 [2022-11-20 09:41:30,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:41:30,180 INFO L495 AbstractCegarLoop]: Abstraction has 17829 states and 23176 transitions. [2022-11-20 09:41:30,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 09:41:30,180 INFO L276 IsEmpty]: Start isEmpty. Operand 17829 states and 23176 transitions. [2022-11-20 09:41:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-20 09:41:30,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:41:30,185 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:30,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 09:41:30,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:41:30,385 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:41:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1623681402, now seen corresponding path program 1 times [2022-11-20 09:41:30,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:41:30,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736041662] [2022-11-20 09:41:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:30,388 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 09:41:30,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:41:30,391 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:41:30,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 09:41:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:41:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:41:36,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:41:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2870 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2022-11-20 09:41:36,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:41:36,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:41:36,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736041662] [2022-11-20 09:41:36,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736041662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:41:36,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:41:36,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:41:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101439624] [2022-11-20 09:41:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:41:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:41:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:41:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:41:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:41:36,428 INFO L87 Difference]: Start difference. First operand 17829 states and 23176 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-20 09:41:38,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:41:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:41:42,714 INFO L93 Difference]: Finished difference Result 42312 states and 54791 transitions. [2022-11-20 09:41:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:41:42,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 400 [2022-11-20 09:41:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:41:42,785 INFO L225 Difference]: With dead ends: 42312 [2022-11-20 09:41:42,786 INFO L226 Difference]: Without dead ends: 24661 [2022-11-20 09:41:42,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:41:42,819 INFO L413 NwaCegarLoop]: 2497 mSDtfsCounter, 1470 mSDsluCounter, 5983 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 8480 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:41:42,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 8480 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 94 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 09:41:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24661 states. [2022-11-20 09:41:45,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24661 to 17793. [2022-11-20 09:41:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17793 states, 12276 states have (on average 1.264988595633757) internal successors, (15529), 12550 states have internal predecessors, (15529), 3752 states have call successors, (3752), 1729 states have call predecessors, (3752), 1764 states have return successors, (3841), 3698 states have call predecessors, (3841), 3725 states have call successors, (3841) [2022-11-20 09:41:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17793 states to 17793 states and 23122 transitions. [2022-11-20 09:41:45,186 INFO L78 Accepts]: Start accepts. Automaton has 17793 states and 23122 transitions. Word has length 400 [2022-11-20 09:41:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:41:45,186 INFO L495 AbstractCegarLoop]: Abstraction has 17793 states and 23122 transitions. [2022-11-20 09:41:45,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-20 09:41:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 17793 states and 23122 transitions. [2022-11-20 09:41:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-20 09:41:45,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:41:45,192 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:45,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-20 09:41:45,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:41:45,392 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:41:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:45,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2072313853, now seen corresponding path program 1 times [2022-11-20 09:41:45,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:41:45,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911365403] [2022-11-20 09:41:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:45,394 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 09:41:45,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:41:45,395 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:41:45,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 09:41:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:41:51,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2789 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:41:51,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:41:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2873 trivial. 0 not checked. [2022-11-20 09:41:51,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:41:51,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:41:51,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911365403] [2022-11-20 09:41:51,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911365403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:41:51,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:41:51,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:41:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698397710] [2022-11-20 09:41:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:41:51,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:41:51,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:41:51,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:41:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:41:51,317 INFO L87 Difference]: Start difference. First operand 17793 states and 23122 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 09:41:53,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:41:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:41:55,009 INFO L93 Difference]: Finished difference Result 31620 states and 40859 transitions. [2022-11-20 09:41:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:41:55,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 431 [2022-11-20 09:41:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:41:55,045 INFO L225 Difference]: With dead ends: 31620 [2022-11-20 09:41:55,045 INFO L226 Difference]: Without dead ends: 14005 [2022-11-20 09:41:55,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 429 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 09:41:55,079 INFO L413 NwaCegarLoop]: 2519 mSDtfsCounter, 1315 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:41:55,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 3887 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 09:41:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14005 states. [2022-11-20 09:41:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14005 to 13788. [2022-11-20 09:41:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13788 states, 9526 states have (on average 1.2561410875498635) internal successors, (11966), 9722 states have internal predecessors, (11966), 2832 states have call successors, (2832), 1395 states have call predecessors, (2832), 1429 states have return successors, (2894), 2807 states have call predecessors, (2894), 2807 states have call successors, (2894) [2022-11-20 09:41:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13788 states to 13788 states and 17692 transitions. [2022-11-20 09:41:56,734 INFO L78 Accepts]: Start accepts. Automaton has 13788 states and 17692 transitions. Word has length 431 [2022-11-20 09:41:56,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:41:56,735 INFO L495 AbstractCegarLoop]: Abstraction has 13788 states and 17692 transitions. [2022-11-20 09:41:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 09:41:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 13788 states and 17692 transitions. [2022-11-20 09:41:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-20 09:41:56,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:41:56,740 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:56,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-20 09:41:56,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:41:56,942 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:41:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash 634305541, now seen corresponding path program 1 times [2022-11-20 09:41:56,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:41:56,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612293026] [2022-11-20 09:41:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:56,944 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 09:41:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:41:56,945 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:41:56,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 09:42:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:42:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:42:02,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:42:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2873 trivial. 0 not checked. [2022-11-20 09:42:02,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:42:02,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:42:02,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612293026] [2022-11-20 09:42:02,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612293026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:42:02,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:42:02,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:42:02,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215481600] [2022-11-20 09:42:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:42:02,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:42:02,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:42:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:42:02,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:42:02,809 INFO L87 Difference]: Start difference. First operand 13788 states and 17692 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 09:42:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:42:05,320 INFO L93 Difference]: Finished difference Result 15984 states and 21046 transitions. [2022-11-20 09:42:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:42:05,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 431 [2022-11-20 09:42:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:42:05,374 INFO L225 Difference]: With dead ends: 15984 [2022-11-20 09:42:05,374 INFO L226 Difference]: Without dead ends: 15513 [2022-11-20 09:42:05,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:42:05,385 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 811 mSDsluCounter, 4511 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 6368 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:42:05,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 6368 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:42:05,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15513 states. [2022-11-20 09:42:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15513 to 13502. [2022-11-20 09:42:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13502 states, 9348 states have (on average 1.2533162173727) internal successors, (11716), 9527 states have internal predecessors, (11716), 2731 states have call successors, (2731), 1387 states have call predecessors, (2731), 1422 states have return successors, (2795), 2714 states have call predecessors, (2795), 2708 states have call successors, (2795) [2022-11-20 09:42:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13502 states to 13502 states and 17242 transitions. [2022-11-20 09:42:07,012 INFO L78 Accepts]: Start accepts. Automaton has 13502 states and 17242 transitions. Word has length 431 [2022-11-20 09:42:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:42:07,013 INFO L495 AbstractCegarLoop]: Abstraction has 13502 states and 17242 transitions. [2022-11-20 09:42:07,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 09:42:07,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13502 states and 17242 transitions. [2022-11-20 09:42:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-11-20 09:42:07,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:42:07,018 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:42:07,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-20 09:42:07,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:07,219 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:42:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:42:07,220 INFO L85 PathProgramCache]: Analyzing trace with hash 399694193, now seen corresponding path program 1 times [2022-11-20 09:42:07,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:42:07,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081804960] [2022-11-20 09:42:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:42:07,222 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 09:42:07,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:42:07,224 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:07,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 09:42:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:42:13,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:42:13,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:42:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2897 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2873 trivial. 0 not checked. [2022-11-20 09:42:13,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:42:13,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:42:13,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081804960] [2022-11-20 09:42:13,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081804960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:42:13,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:42:13,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:42:13,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028042977] [2022-11-20 09:42:13,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:42:13,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:42:13,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:42:13,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:42:13,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:42:13,168 INFO L87 Difference]: Start difference. First operand 13502 states and 17242 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 09:42:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:42:15,671 INFO L93 Difference]: Finished difference Result 24814 states and 32240 transitions. [2022-11-20 09:42:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:42:15,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 435 [2022-11-20 09:42:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:42:15,704 INFO L225 Difference]: With dead ends: 24814 [2022-11-20 09:42:15,704 INFO L226 Difference]: Without dead ends: 11490 [2022-11-20 09:42:15,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:42:15,726 INFO L413 NwaCegarLoop]: 1888 mSDtfsCounter, 806 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:42:15,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 6551 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 09:42:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11490 states. [2022-11-20 09:42:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11490 to 9325. [2022-11-20 09:42:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9325 states, 6467 states have (on average 1.2483377145507963) internal successors, (8073), 6585 states have internal predecessors, (8073), 1832 states have call successors, (1832), 1002 states have call predecessors, (1832), 1025 states have return successors, (1873), 1822 states have call predecessors, (1873), 1815 states have call successors, (1873) [2022-11-20 09:42:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9325 states to 9325 states and 11778 transitions. [2022-11-20 09:42:16,924 INFO L78 Accepts]: Start accepts. Automaton has 9325 states and 11778 transitions. Word has length 435 [2022-11-20 09:42:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:42:16,925 INFO L495 AbstractCegarLoop]: Abstraction has 9325 states and 11778 transitions. [2022-11-20 09:42:16,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 09:42:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 9325 states and 11778 transitions. [2022-11-20 09:42:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-20 09:42:16,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:42:16,934 INFO L195 NwaCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:42:16,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 09:42:17,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:17,148 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:42:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:42:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash 994626075, now seen corresponding path program 1 times [2022-11-20 09:42:17,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:42:17,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306039427] [2022-11-20 09:42:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:42:17,150 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 09:42:17,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:42:17,152 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:17,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 09:42:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:42:23,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 3237 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 09:42:23,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:42:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2935 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2925 trivial. 0 not checked. [2022-11-20 09:42:24,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:42:24,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:42:24,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306039427] [2022-11-20 09:42:24,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306039427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:42:24,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:42:24,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:42:24,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70468182] [2022-11-20 09:42:24,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:42:24,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:42:24,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:42:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:42:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:42:24,152 INFO L87 Difference]: Start difference. First operand 9325 states and 11778 transitions. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (49), 4 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 09:42:26,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:42:30,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:42:31,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:42:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:42:31,304 INFO L93 Difference]: Finished difference Result 18520 states and 23405 transitions. [2022-11-20 09:42:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:42:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (49), 4 states have call predecessors, (49), 2 states have call successors, (49) Word has length 486 [2022-11-20 09:42:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:42:31,326 INFO L225 Difference]: With dead ends: 18520 [2022-11-20 09:42:31,326 INFO L226 Difference]: Without dead ends: 9373 [2022-11-20 09:42:31,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:42:31,340 INFO L413 NwaCegarLoop]: 1433 mSDtfsCounter, 9 mSDsluCounter, 9985 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11418 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:42:31,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11418 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 09:42:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2022-11-20 09:42:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 9355. [2022-11-20 09:42:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9355 states, 6493 states have (on average 1.2473432927768366) internal successors, (8099), 6607 states have internal predecessors, (8099), 1832 states have call successors, (1832), 1002 states have call predecessors, (1832), 1029 states have return successors, (1889), 1830 states have call predecessors, (1889), 1815 states have call successors, (1889) [2022-11-20 09:42:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9355 states to 9355 states and 11820 transitions. [2022-11-20 09:42:32,468 INFO L78 Accepts]: Start accepts. Automaton has 9355 states and 11820 transitions. Word has length 486 [2022-11-20 09:42:32,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:42:32,469 INFO L495 AbstractCegarLoop]: Abstraction has 9355 states and 11820 transitions. [2022-11-20 09:42:32,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (49), 4 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 09:42:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9355 states and 11820 transitions. [2022-11-20 09:42:32,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-20 09:42:32,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:42:32,477 INFO L195 NwaCegarLoop]: trace histogram [56, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:42:32,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-20 09:42:32,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:32,678 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:42:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:42:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash -746417455, now seen corresponding path program 1 times [2022-11-20 09:42:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:42:32,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420413942] [2022-11-20 09:42:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:42:32,681 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 09:42:32,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:42:32,682 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:32,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 09:42:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:42:39,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:42:39,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:42:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2957 trivial. 0 not checked. [2022-11-20 09:42:39,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:42:39,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:42:39,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420413942] [2022-11-20 09:42:39,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420413942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:42:39,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:42:39,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:42:39,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305981520] [2022-11-20 09:42:39,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:42:39,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:42:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:42:39,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:42:39,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:42:39,668 INFO L87 Difference]: Start difference. First operand 9355 states and 11820 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-20 09:42:41,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:42:47,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:42:47,040 INFO L93 Difference]: Finished difference Result 22092 states and 27973 transitions. [2022-11-20 09:42:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:42:47,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 492 [2022-11-20 09:42:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:42:47,073 INFO L225 Difference]: With dead ends: 22092 [2022-11-20 09:42:47,073 INFO L226 Difference]: Without dead ends: 12915 [2022-11-20 09:42:47,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:42:47,090 INFO L413 NwaCegarLoop]: 2364 mSDtfsCounter, 1715 mSDsluCounter, 12562 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 279 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 14926 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:42:47,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 14926 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 493 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 09:42:47,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12915 states. [2022-11-20 09:42:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12915 to 9385. [2022-11-20 09:42:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9385 states, 6499 states have (on average 1.247114940760117) internal successors, (8105), 6613 states have internal predecessors, (8105), 1856 states have call successors, (1856), 1002 states have call predecessors, (1856), 1029 states have return successors, (1913), 1854 states have call predecessors, (1913), 1839 states have call successors, (1913) [2022-11-20 09:42:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 11874 transitions. [2022-11-20 09:42:48,364 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 11874 transitions. Word has length 492 [2022-11-20 09:42:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:42:48,365 INFO L495 AbstractCegarLoop]: Abstraction has 9385 states and 11874 transitions. [2022-11-20 09:42:48,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-20 09:42:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 11874 transitions. [2022-11-20 09:42:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-11-20 09:42:48,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:42:48,377 INFO L195 NwaCegarLoop]: trace histogram [56, 16, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:42:48,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 09:42:48,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:48,578 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:42:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:42:48,579 INFO L85 PathProgramCache]: Analyzing trace with hash 640538826, now seen corresponding path program 1 times [2022-11-20 09:42:48,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:42:48,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732865767] [2022-11-20 09:42:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:42:48,581 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 09:42:48,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:42:48,582 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:48,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 09:42:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:42:56,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 4264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:42:56,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:42:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 3179 trivial. 0 not checked. [2022-11-20 09:42:56,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:42:56,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:42:56,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732865767] [2022-11-20 09:42:56,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732865767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:42:56,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:42:56,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:42:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62134032] [2022-11-20 09:42:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:42:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:42:56,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:42:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:42:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:42:56,606 INFO L87 Difference]: Start difference. First operand 9385 states and 11874 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-20 09:42:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:42:57,914 INFO L93 Difference]: Finished difference Result 18694 states and 23693 transitions. [2022-11-20 09:42:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:42:57,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 618 [2022-11-20 09:42:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:42:57,935 INFO L225 Difference]: With dead ends: 18694 [2022-11-20 09:42:57,935 INFO L226 Difference]: Without dead ends: 9487 [2022-11-20 09:42:57,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:42:57,952 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 14 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 5743 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:42:57,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 5743 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:42:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9487 states. [2022-11-20 09:42:59,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9487 to 9403. [2022-11-20 09:42:59,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9403 states, 6517 states have (on average 1.246432407549486) internal successors, (8123), 6631 states have internal predecessors, (8123), 1856 states have call successors, (1856), 1002 states have call predecessors, (1856), 1029 states have return successors, (1913), 1854 states have call predecessors, (1913), 1839 states have call successors, (1913) [2022-11-20 09:42:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9403 states to 9403 states and 11892 transitions. [2022-11-20 09:42:59,120 INFO L78 Accepts]: Start accepts. Automaton has 9403 states and 11892 transitions. Word has length 618 [2022-11-20 09:42:59,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:42:59,121 INFO L495 AbstractCegarLoop]: Abstraction has 9403 states and 11892 transitions. [2022-11-20 09:42:59,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-20 09:42:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 9403 states and 11892 transitions. [2022-11-20 09:42:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-11-20 09:42:59,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:42:59,129 INFO L195 NwaCegarLoop]: trace histogram [56, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:42:59,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-20 09:42:59,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:59,330 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:42:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:42:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash 601790253, now seen corresponding path program 1 times [2022-11-20 09:42:59,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:42:59,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418096657] [2022-11-20 09:42:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:42:59,334 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 09:42:59,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:42:59,335 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:42:59,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 09:43:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:43:07,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 4186 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:43:07,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:43:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3191 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 3071 trivial. 0 not checked. [2022-11-20 09:43:08,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:43:08,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:43:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418096657] [2022-11-20 09:43:08,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418096657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:43:08,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:43:08,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:43:08,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085071195] [2022-11-20 09:43:08,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:43:08,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:43:08,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:43:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:43:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:43:08,075 INFO L87 Difference]: Start difference. First operand 9403 states and 11892 transitions. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 6 states have internal predecessors, (199), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (57), 4 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-20 09:43:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:43:09,579 INFO L93 Difference]: Finished difference Result 18640 states and 23591 transitions. [2022-11-20 09:43:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:43:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 6 states have internal predecessors, (199), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (57), 4 states have call predecessors, (57), 2 states have call successors, (57) Word has length 590 [2022-11-20 09:43:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:43:09,610 INFO L225 Difference]: With dead ends: 18640 [2022-11-20 09:43:09,610 INFO L226 Difference]: Without dead ends: 9415 [2022-11-20 09:43:09,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:43:09,628 INFO L413 NwaCegarLoop]: 1432 mSDtfsCounter, 2 mSDsluCounter, 8578 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10010 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:43:09,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10010 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:43:09,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9415 states. [2022-11-20 09:43:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9415 to 9415. [2022-11-20 09:43:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9415 states, 6529 states have (on average 1.2459794761831828) internal successors, (8135), 6637 states have internal predecessors, (8135), 1856 states have call successors, (1856), 1002 states have call predecessors, (1856), 1029 states have return successors, (1913), 1860 states have call predecessors, (1913), 1839 states have call successors, (1913) [2022-11-20 09:43:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9415 states to 9415 states and 11904 transitions. [2022-11-20 09:43:10,743 INFO L78 Accepts]: Start accepts. Automaton has 9415 states and 11904 transitions. Word has length 590 [2022-11-20 09:43:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:43:10,743 INFO L495 AbstractCegarLoop]: Abstraction has 9415 states and 11904 transitions. [2022-11-20 09:43:10,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 6 states have internal predecessors, (199), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (57), 4 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-20 09:43:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 9415 states and 11904 transitions. [2022-11-20 09:43:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-11-20 09:43:10,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:43:10,752 INFO L195 NwaCegarLoop]: trace histogram [56, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:43:10,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-20 09:43:10,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:43:10,953 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:43:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:43:10,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1826484381, now seen corresponding path program 2 times [2022-11-20 09:43:10,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:43:10,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625615532] [2022-11-20 09:43:10,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:43:10,955 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 09:43:10,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:43:10,956 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:43:10,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (36)] Waiting until timeout for monitored process [2022-11-20 09:43:13,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:43:13,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:43:13,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:43:13,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:43:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3237 trivial. 0 not checked. [2022-11-20 09:43:13,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:43:13,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:43:13,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625615532] [2022-11-20 09:43:13,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625615532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:43:13,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:43:13,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:43:13,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800160364] [2022-11-20 09:43:13,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:43:13,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:43:13,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:43:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:43:13,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:43:13,485 INFO L87 Difference]: Start difference. First operand 9415 states and 11904 transitions. Second operand has 6 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 3 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-20 09:43:15,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:43:15,611 INFO L93 Difference]: Finished difference Result 19916 states and 25578 transitions. [2022-11-20 09:43:15,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:43:15,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 3 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 596 [2022-11-20 09:43:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:43:15,637 INFO L225 Difference]: With dead ends: 19916 [2022-11-20 09:43:15,637 INFO L226 Difference]: Without dead ends: 10679 [2022-11-20 09:43:15,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:43:15,655 INFO L413 NwaCegarLoop]: 1889 mSDtfsCounter, 344 mSDsluCounter, 7089 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 8978 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:43:15,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 8978 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:43:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10679 states. [2022-11-20 09:43:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10679 to 9415. [2022-11-20 09:43:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9415 states, 6529 states have (on average 1.2450604993107675) internal successors, (8129), 6637 states have internal predecessors, (8129), 1856 states have call successors, (1856), 1002 states have call predecessors, (1856), 1029 states have return successors, (1913), 1860 states have call predecessors, (1913), 1839 states have call successors, (1913) [2022-11-20 09:43:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9415 states to 9415 states and 11898 transitions. [2022-11-20 09:43:16,753 INFO L78 Accepts]: Start accepts. Automaton has 9415 states and 11898 transitions. Word has length 596 [2022-11-20 09:43:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:43:16,754 INFO L495 AbstractCegarLoop]: Abstraction has 9415 states and 11898 transitions. [2022-11-20 09:43:16,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 3 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-20 09:43:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9415 states and 11898 transitions. [2022-11-20 09:43:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-11-20 09:43:16,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:43:16,762 INFO L195 NwaCegarLoop]: trace histogram [56, 16, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:43:16,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (36)] Forceful destruction successful, exit code 0 [2022-11-20 09:43:16,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:43:16,962 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:43:16,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:43:16,963 INFO L85 PathProgramCache]: Analyzing trace with hash 761923045, now seen corresponding path program 1 times [2022-11-20 09:43:16,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:43:16,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355030607] [2022-11-20 09:43:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:43:16,965 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 09:43:16,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:43:16,966 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:43:16,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (37)] Waiting until timeout for monitored process [2022-11-20 09:43:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:43:25,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 4271 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 09:43:25,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:43:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 3147 trivial. 0 not checked. [2022-11-20 09:43:25,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:43:25,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:43:25,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355030607] [2022-11-20 09:43:25,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355030607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:43:25,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:43:25,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:43:25,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007009591] [2022-11-20 09:43:25,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:43:25,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:43:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:43:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:43:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:43:25,842 INFO L87 Difference]: Start difference. First operand 9415 states and 11898 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (58), 4 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-20 09:43:27,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:43:27,213 INFO L93 Difference]: Finished difference Result 18682 states and 23633 transitions. [2022-11-20 09:43:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:43:27,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (58), 4 states have call predecessors, (58), 2 states have call successors, (58) Word has length 620 [2022-11-20 09:43:27,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:43:27,235 INFO L225 Difference]: With dead ends: 18682 [2022-11-20 09:43:27,235 INFO L226 Difference]: Without dead ends: 9445 [2022-11-20 09:43:27,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:43:27,253 INFO L413 NwaCegarLoop]: 1431 mSDtfsCounter, 0 mSDsluCounter, 7147 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8578 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:43:27,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8578 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:43:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9445 states. [2022-11-20 09:43:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9445 to 9445. [2022-11-20 09:43:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9445 states, 6553 states have (on average 1.2441629787883413) internal successors, (8153), 6655 states have internal predecessors, (8153), 1856 states have call successors, (1856), 1002 states have call predecessors, (1856), 1035 states have return successors, (1931), 1872 states have call predecessors, (1931), 1839 states have call successors, (1931) [2022-11-20 09:43:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9445 states to 9445 states and 11940 transitions. [2022-11-20 09:43:28,341 INFO L78 Accepts]: Start accepts. Automaton has 9445 states and 11940 transitions. Word has length 620 [2022-11-20 09:43:28,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:43:28,341 INFO L495 AbstractCegarLoop]: Abstraction has 9445 states and 11940 transitions. [2022-11-20 09:43:28,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (58), 4 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-20 09:43:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 9445 states and 11940 transitions. [2022-11-20 09:43:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2022-11-20 09:43:28,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:43:28,348 INFO L195 NwaCegarLoop]: trace histogram [56, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:43:28,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (37)] Forceful destruction successful, exit code 0 [2022-11-20 09:43:28,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:43:28,549 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:43:28,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:43:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash 452673671, now seen corresponding path program 1 times [2022-11-20 09:43:28,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:43:28,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247959530] [2022-11-20 09:43:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:43:28,552 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 09:43:28,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:43:28,553 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:43:28,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (38)] Waiting until timeout for monitored process [2022-11-20 09:43:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:43:38,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 4322 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:43:38,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:43:39,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:43:39,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 22 [2022-11-20 09:43:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3727 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3727 trivial. 0 not checked. [2022-11-20 09:43:39,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:43:39,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:43:39,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247959530] [2022-11-20 09:43:39,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247959530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:43:39,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:43:39,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:43:39,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93175089] [2022-11-20 09:43:39,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:43:39,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:43:39,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:43:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:43:39,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:43:39,853 INFO L87 Difference]: Start difference. First operand 9445 states and 11940 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-20 09:43:41,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:43:44,001 WARN L539 Checker$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 09:43:50,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:43:52,414 WARN L539 Checker$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 09:43:54,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:43:56,443 WARN L539 Checker$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 09:43:58,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:44:02,498 WARN L539 Checker$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 09:44:04,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:44:06,699 WARN L539 Checker$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 09:44:08,711 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 09:44:12,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:44:12,637 INFO L93 Difference]: Finished difference Result 18845 states and 23824 transitions. [2022-11-20 09:44:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:44:12,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 638 [2022-11-20 09:44:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:44:12,665 INFO L225 Difference]: With dead ends: 18845 [2022-11-20 09:44:12,665 INFO L226 Difference]: Without dead ends: 9578 [2022-11-20 09:44:12,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 628 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:44:12,683 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 14 mSDsluCounter, 5426 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6872 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:44:12,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 6872 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 10 Unknown, 117 Unchecked, 31.2s Time] [2022-11-20 09:44:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2022-11-20 09:44:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 9578. [2022-11-20 09:44:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9578 states, 6632 states have (on average 1.2421592279855247) internal successors, (8238), 6733 states have internal predecessors, (8238), 1893 states have call successors, (1893), 1018 states have call predecessors, (1893), 1052 states have return successors, (1970), 1911 states have call predecessors, (1970), 1878 states have call successors, (1970) [2022-11-20 09:44:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9578 states to 9578 states and 12101 transitions. [2022-11-20 09:44:13,872 INFO L78 Accepts]: Start accepts. Automaton has 9578 states and 12101 transitions. Word has length 638 [2022-11-20 09:44:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:44:13,873 INFO L495 AbstractCegarLoop]: Abstraction has 9578 states and 12101 transitions. [2022-11-20 09:44:13,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-20 09:44:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 9578 states and 12101 transitions. [2022-11-20 09:44:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2022-11-20 09:44:13,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:44:13,883 INFO L195 NwaCegarLoop]: trace histogram [56, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:44:13,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (38)] Forceful destruction successful, exit code 0 [2022-11-20 09:44:14,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:44:14,085 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:44:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:44:14,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1636531069, now seen corresponding path program 1 times [2022-11-20 09:44:14,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:44:14,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037377557] [2022-11-20 09:44:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:44:14,088 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 09:44:14,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:44:14,089 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:44:14,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (39)] Waiting until timeout for monitored process [2022-11-20 09:44:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:44:24,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 4388 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:44:24,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:44:27,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:44:27,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 21 [2022-11-20 09:44:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3730 trivial. 0 not checked. [2022-11-20 09:44:30,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:44:30,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:44:30,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037377557] [2022-11-20 09:44:30,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037377557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:44:30,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:44:30,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:44:30,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139630999] [2022-11-20 09:44:30,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:44:30,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:44:30,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:44:30,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:44:30,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2022-11-20 09:44:30,048 INFO L87 Difference]: Start difference. First operand 9578 states and 12101 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-20 09:44:32,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:44:37,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:44:39,209 WARN L539 Checker$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 09:44:41,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:44:44,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:44:46,655 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 09:44:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:44:49,179 INFO L93 Difference]: Finished difference Result 18946 states and 23914 transitions. [2022-11-20 09:44:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:44:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 673 [2022-11-20 09:44:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:44:49,218 INFO L225 Difference]: With dead ends: 18946 [2022-11-20 09:44:49,219 INFO L226 Difference]: Without dead ends: 9546 [2022-11-20 09:44:49,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 659 SyntacticMatches, 9 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2022-11-20 09:44:49,238 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 9 mSDsluCounter, 4100 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5538 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:44:49,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5538 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 6 Unknown, 119 Unchecked, 17.7s Time] [2022-11-20 09:44:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2022-11-20 09:44:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 9541. [2022-11-20 09:44:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9541 states, 6617 states have (on average 1.241348042919752) internal successors, (8214), 6718 states have internal predecessors, (8214), 1869 states have call successors, (1869), 1020 states have call predecessors, (1869), 1054 states have return successors, (1946), 1887 states have call predecessors, (1946), 1854 states have call successors, (1946) [2022-11-20 09:44:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9541 states to 9541 states and 12029 transitions. [2022-11-20 09:44:50,439 INFO L78 Accepts]: Start accepts. Automaton has 9541 states and 12029 transitions. Word has length 673 [2022-11-20 09:44:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:44:50,440 INFO L495 AbstractCegarLoop]: Abstraction has 9541 states and 12029 transitions. [2022-11-20 09:44:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-20 09:44:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9541 states and 12029 transitions. [2022-11-20 09:44:50,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2022-11-20 09:44:50,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:44:50,452 INFO L195 NwaCegarLoop]: trace histogram [56, 15, 15, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:44:50,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (39)] Forceful destruction successful, exit code 0 [2022-11-20 09:44:50,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:44:50,653 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:44:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:44:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash 579631618, now seen corresponding path program 1 times [2022-11-20 09:44:50,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:44:50,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745655450] [2022-11-20 09:44:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:44:50,656 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 09:44:50,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:44:50,658 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:44:50,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (40)] Waiting until timeout for monitored process [2022-11-20 09:44:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:44:59,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 4406 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:44:59,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:45:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 3122 trivial. 0 not checked. [2022-11-20 09:45:00,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:45:00,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:45:00,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745655450] [2022-11-20 09:45:00,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745655450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:45:00,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:45:00,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:45:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689910998] [2022-11-20 09:45:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:45:00,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:45:00,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:45:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:45:00,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:45:00,523 INFO L87 Difference]: Start difference. First operand 9541 states and 12029 transitions. Second operand has 8 states, 8 states have (on average 30.625) internal successors, (245), 6 states have internal predecessors, (245), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (69), 4 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-20 09:45:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:45:02,327 INFO L93 Difference]: Finished difference Result 18916 states and 23865 transitions. [2022-11-20 09:45:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:45:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 6 states have internal predecessors, (245), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (69), 4 states have call predecessors, (69), 2 states have call successors, (69) Word has length 684 [2022-11-20 09:45:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:45:02,353 INFO L225 Difference]: With dead ends: 18916 [2022-11-20 09:45:02,353 INFO L226 Difference]: Without dead ends: 9553 [2022-11-20 09:45:02,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:45:02,372 INFO L413 NwaCegarLoop]: 1431 mSDtfsCounter, 2 mSDsluCounter, 8572 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10003 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:45:02,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10003 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:45:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9553 states. [2022-11-20 09:45:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9553 to 9553. [2022-11-20 09:45:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9553 states, 6629 states have (on average 1.2409111479861217) internal successors, (8226), 6724 states have internal predecessors, (8226), 1869 states have call successors, (1869), 1020 states have call predecessors, (1869), 1054 states have return successors, (1946), 1893 states have call predecessors, (1946), 1854 states have call successors, (1946) [2022-11-20 09:45:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9553 states to 9553 states and 12041 transitions. [2022-11-20 09:45:03,567 INFO L78 Accepts]: Start accepts. Automaton has 9553 states and 12041 transitions. Word has length 684 [2022-11-20 09:45:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:45:03,568 INFO L495 AbstractCegarLoop]: Abstraction has 9553 states and 12041 transitions. [2022-11-20 09:45:03,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 6 states have internal predecessors, (245), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (69), 4 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-20 09:45:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 9553 states and 12041 transitions. [2022-11-20 09:45:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-11-20 09:45:03,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:45:03,587 INFO L195 NwaCegarLoop]: trace histogram [56, 17, 17, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:45:03,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (40)] Forceful destruction successful, exit code 0 [2022-11-20 09:45:03,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:45:03,803 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:45:03,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:45:03,804 INFO L85 PathProgramCache]: Analyzing trace with hash 151577750, now seen corresponding path program 2 times [2022-11-20 09:45:03,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:45:03,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697690608] [2022-11-20 09:45:03,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:45:03,807 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 09:45:03,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:45:03,809 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:45:03,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (41)] Waiting until timeout for monitored process [2022-11-20 09:45:06,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:45:06,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:45:06,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 09:45:06,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:45:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3580 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3569 trivial. 0 not checked. [2022-11-20 09:45:21,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:45:21,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:45:21,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697690608] [2022-11-20 09:45:21,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697690608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:45:21,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:45:21,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:45:21,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166833958] [2022-11-20 09:45:21,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:45:21,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:45:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:45:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:45:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:45:21,858 INFO L87 Difference]: Start difference. First operand 9553 states and 12041 transitions. Second operand has 11 states, 11 states have (on average 20.454545454545453) internal successors, (225), 9 states have internal predecessors, (225), 5 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (66), 7 states have call predecessors, (66), 4 states have call successors, (66) [2022-11-20 09:45:23,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:45:26,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:45:28,025 WARN L539 Checker$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 09:45:30,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:45:32,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:45:34,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:45:36,088 WARN L539 Checker$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 09:45:38,108 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 09:46:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:46:26,313 INFO L93 Difference]: Finished difference Result 30827 states and 39832 transitions. [2022-11-20 09:46:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:46:26,315 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.454545454545453) internal successors, (225), 9 states have internal predecessors, (225), 5 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (66), 7 states have call predecessors, (66), 4 states have call successors, (66) Word has length 696 [2022-11-20 09:46:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:46:26,401 INFO L225 Difference]: With dead ends: 30827 [2022-11-20 09:46:26,401 INFO L226 Difference]: Without dead ends: 21452 [2022-11-20 09:46:26,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:46:26,430 INFO L413 NwaCegarLoop]: 2077 mSDtfsCounter, 1506 mSDsluCounter, 11929 mSDsCounter, 0 mSdLazyCounter, 6243 mSolverCounterSat, 19 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 14006 SdHoareTripleChecker+Invalid, 6270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 6243 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:46:26,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 14006 Invalid, 6270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 6243 Invalid, 8 Unknown, 0 Unchecked, 59.8s Time] [2022-11-20 09:46:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2022-11-20 09:46:29,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 19205. [2022-11-20 09:46:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19205 states, 13289 states have (on average 1.2434344194446534) internal successors, (16524), 13494 states have internal predecessors, (16524), 3804 states have call successors, (3804), 2022 states have call predecessors, (3804), 2111 states have return successors, (4120), 3858 states have call predecessors, (4120), 3783 states have call successors, (4120) [2022-11-20 09:46:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19205 states to 19205 states and 24448 transitions. [2022-11-20 09:46:29,641 INFO L78 Accepts]: Start accepts. Automaton has 19205 states and 24448 transitions. Word has length 696 [2022-11-20 09:46:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:46:29,642 INFO L495 AbstractCegarLoop]: Abstraction has 19205 states and 24448 transitions. [2022-11-20 09:46:29,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.454545454545453) internal successors, (225), 9 states have internal predecessors, (225), 5 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (66), 7 states have call predecessors, (66), 4 states have call successors, (66) [2022-11-20 09:46:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 19205 states and 24448 transitions. [2022-11-20 09:46:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2022-11-20 09:46:29,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:46:29,669 INFO L195 NwaCegarLoop]: trace histogram [56, 14, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:46:29,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (41)] Forceful destruction successful, exit code 0 [2022-11-20 09:46:29,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:46:29,870 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:46:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:46:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash -518417057, now seen corresponding path program 1 times [2022-11-20 09:46:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:46:29,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694171937] [2022-11-20 09:46:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:46:29,873 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 09:46:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:46:29,875 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:46:29,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (42)] Waiting until timeout for monitored process [2022-11-20 09:46:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:46:39,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 4390 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 09:46:39,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:46:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3370 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2022-11-20 09:46:40,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:46:40,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:46:40,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694171937] [2022-11-20 09:46:40,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694171937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:46:40,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:46:40,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:46:40,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431879090] [2022-11-20 09:46:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:46:40,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:46:40,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:46:40,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:46:40,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:46:40,023 INFO L87 Difference]: Start difference. First operand 19205 states and 24448 transitions. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 5 states have internal predecessors, (244), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (69), 4 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-20 09:46:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:46:43,219 INFO L93 Difference]: Finished difference Result 38150 states and 48590 transitions. [2022-11-20 09:46:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:46:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 5 states have internal predecessors, (244), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (69), 4 states have call predecessors, (69), 2 states have call successors, (69) Word has length 680 [2022-11-20 09:46:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:46:43,287 INFO L225 Difference]: With dead ends: 38150 [2022-11-20 09:46:43,287 INFO L226 Difference]: Without dead ends: 19229 [2022-11-20 09:46:43,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:46:43,325 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 0 mSDsluCounter, 7132 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8560 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:46:43,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8560 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:46:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19229 states. [2022-11-20 09:46:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19229 to 19229. [2022-11-20 09:46:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19229 states, 13313 states have (on average 1.2429955682415683) internal successors, (16548), 13506 states have internal predecessors, (16548), 3804 states have call successors, (3804), 2022 states have call predecessors, (3804), 2111 states have return successors, (4120), 3870 states have call predecessors, (4120), 3783 states have call successors, (4120) [2022-11-20 09:46:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19229 states to 19229 states and 24472 transitions. [2022-11-20 09:46:46,609 INFO L78 Accepts]: Start accepts. Automaton has 19229 states and 24472 transitions. Word has length 680 [2022-11-20 09:46:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:46:46,610 INFO L495 AbstractCegarLoop]: Abstraction has 19229 states and 24472 transitions. [2022-11-20 09:46:46,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 5 states have internal predecessors, (244), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (69), 4 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-20 09:46:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 19229 states and 24472 transitions. [2022-11-20 09:46:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2022-11-20 09:46:46,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:46:46,638 INFO L195 NwaCegarLoop]: trace histogram [56, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:46:46,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (42)] Forceful destruction successful, exit code 0 [2022-11-20 09:46:46,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:46:46,864 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:46:46,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:46:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash -935678965, now seen corresponding path program 2 times [2022-11-20 09:46:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:46:46,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220604690] [2022-11-20 09:46:46,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:46:46,867 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 09:46:46,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:46:46,869 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:46:46,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (43)] Waiting until timeout for monitored process [2022-11-20 09:46:50,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:46:50,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:46:50,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:46:50,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:47:03,519 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:47:03,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 21 [2022-11-20 09:47:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3662 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3651 trivial. 0 not checked. [2022-11-20 09:47:04,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:47:04,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:47:04,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220604690] [2022-11-20 09:47:04,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220604690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:47:04,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:47:04,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:47:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015778081] [2022-11-20 09:47:04,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:47:04,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:47:04,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:47:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:47:04,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:47:04,142 INFO L87 Difference]: Start difference. First operand 19229 states and 24472 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 4 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-20 09:47:06,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:08,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:15,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:17,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:19,432 WARN L539 Checker$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 09:47:21,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:23,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:25,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:29,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:31,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:33,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:47:35,913 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 09:47:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:47:40,528 INFO L93 Difference]: Finished difference Result 19487 states and 24742 transitions. [2022-11-20 09:47:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:47:40,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 4 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 704 [2022-11-20 09:47:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:47:40,544 INFO L225 Difference]: With dead ends: 19487 [2022-11-20 09:47:40,544 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 09:47:40,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 682 SyntacticMatches, 17 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:47:40,568 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 9 mSDsluCounter, 5365 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6801 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:47:40,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6801 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 9 Unknown, 136 Unchecked, 33.7s Time] [2022-11-20 09:47:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 09:47:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 09:47:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 09:47:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 09:47:40,571 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 704 [2022-11-20 09:47:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:47:40,571 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 09:47:40,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 4 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-20 09:47:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 09:47:40,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 09:47:40,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 09:47:40,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 (43)] Forceful destruction successful, exit code 0 [2022-11-20 09:47:40,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53373-33e7-4d87-b867-535ec0732afe/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 09:47:40,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 09:49:42,160 WARN L233 SmtUtils]: Spent 42.31s on a formula simplification. DAG size of input: 120 DAG size of output: 118 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 09:50:13,253 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 303 DAG size of output: 1 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)