./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-43_2a-drivers--net--hippi--rrunner.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/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 ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:51:28,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:51:28,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:51:28,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:51:28,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:51:28,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:51:28,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:51:28,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:51:28,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:51:28,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:51:28,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:51:28,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:51:28,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:51:28,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:51:28,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:51:28,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:51:28,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:51:28,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:51:28,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:51:28,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:51:28,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:51:28,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:51:28,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:51:28,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:51:28,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:51:28,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:51:28,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:51:28,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:51:28,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:51:28,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:51:28,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:51:28,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:51:28,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:51:28,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:51:28,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:51:28,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:51:28,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:51:28,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:51:28,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:51:28,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:51:28,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:51:28,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:51:28,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:51:28,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:51:28,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:51:28,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:51:28,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:51:28,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:51:28,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:51:28,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:51:28,915 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:51:28,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:51:28,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:51:28,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:51:28,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:51:28,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:51:28,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:51:28,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:51:28,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:51:28,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:51:28,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:51:28,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:51:28,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:51:28,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:51:28,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:51:28,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:51:28,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:51:28,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:51:28,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:51:28,920 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:51:28,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:51:28,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:51:28,921 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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 [2022-11-20 11:51:29,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:51:29,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:51:29,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:51:29,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:51:29,254 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:51:29,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2022-11-20 11:51:32,569 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:51:33,115 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:51:33,116 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2022-11-20 11:51:33,168 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/data/7df743400/514de5ae7df34011828041e0402db0d6/FLAG34ca05eb1 [2022-11-20 11:51:33,186 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/data/7df743400/514de5ae7df34011828041e0402db0d6 [2022-11-20 11:51:33,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:51:33,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:51:33,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:51:33,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:51:33,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:51:33,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:33" (1/1) ... [2022-11-20 11:51:33,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a79ca72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:33, skipping insertion in model container [2022-11-20 11:51:33,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:33" (1/1) ... [2022-11-20 11:51:33,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:51:33,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:51:34,120 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 11:51:34,126 INFO L158 Benchmark]: Toolchain (without parser) took 931.65ms. Allocated memory was 146.8MB in the beginning and 190.8MB in the end (delta: 44.0MB). Free memory was 88.8MB in the beginning and 113.1MB in the end (delta: -24.3MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2022-11-20 11:51:34,127 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:51:34,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 926.98ms. Allocated memory was 146.8MB in the beginning and 190.8MB in the end (delta: 44.0MB). Free memory was 88.3MB in the beginning and 113.1MB in the end (delta: -24.8MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-20 11:51:34,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 926.98ms. Allocated memory was 146.8MB in the beginning and 190.8MB in the end (delta: 44.0MB). Free memory was 88.3MB in the beginning and 113.1MB in the end (delta: -24.8MB). Peak memory consumption was 28.4MB. 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/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 ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:51:36,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:51:36,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:51:36,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:51:36,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:51:36,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:51:36,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:51:36,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:51:36,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:51:36,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:51:36,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:51:36,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:51:36,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:51:36,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:51:36,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:51:36,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:51:36,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:51:36,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:51:36,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:51:36,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:51:36,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:51:36,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:51:36,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:51:36,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:51:36,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:51:36,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:51:36,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:51:36,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:51:36,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:51:36,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:51:36,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:51:36,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:51:36,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:51:36,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:51:36,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:51:36,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:51:36,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:51:36,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:51:36,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:51:36,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:51:36,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:51:36,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 11:51:36,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:51:36,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:51:36,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:51:36,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:51:36,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:51:36,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:51:36,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:51:36,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:51:36,647 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:51:36,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:51:36,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:51:36,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:51:36,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:51:36,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:51:36,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:51:36,649 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:51:36,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:51:36,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:51:36,650 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:51:36,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:51:36,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:51:36,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:51:36,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:51:36,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:51:36,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:51:36,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:51:36,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:51:36,653 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:51:36,653 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:51:36,653 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:51:36,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:51:36,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:51:36,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:51:36,655 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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 [2022-11-20 11:51:37,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:51:37,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:51:37,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:51:37,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:51:37,099 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:51:37,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2022-11-20 11:51:40,439 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:51:41,232 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:51:41,233 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2022-11-20 11:51:41,276 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/data/9ef515a8b/4b559d69d8e04776bbd9dc0202a64519/FLAG3f9451fe3 [2022-11-20 11:51:41,298 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/data/9ef515a8b/4b559d69d8e04776bbd9dc0202a64519 [2022-11-20 11:51:41,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:51:41,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:51:41,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:51:41,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:51:41,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:51:41,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:41" (1/1) ... [2022-11-20 11:51:41,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a941aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:41, skipping insertion in model container [2022-11-20 11:51:41,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:41" (1/1) ... [2022-11-20 11:51:41,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:51:41,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:51:43,611 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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2022-11-20 11:51:43,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:51:43,762 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:51:43,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:51:44,240 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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2022-11-20 11:51:44,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:51:44,285 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:51:44,761 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_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2022-11-20 11:51:44,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:51:45,014 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:51:45,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45 WrapperNode [2022-11-20 11:51:45,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:51:45,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:51:45,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:51:45,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:51:45,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,356 INFO L138 Inliner]: procedures = 238, calls = 1254, calls flagged for inlining = 123, calls inlined = 120, statements flattened = 3467 [2022-11-20 11:51:45,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:51:45,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:51:45,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:51:45,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:51:45,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:51:45,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:51:45,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:51:45,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:51:45,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (1/1) ... [2022-11-20 11:51:45,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:51:45,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:45,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:51:45,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:51:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-20 11:51:45,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-20 11:51:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 11:51:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 11:51:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:51:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:51:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-20 11:51:45,717 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-20 11:51:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 11:51:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:51:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 11:51:45,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 11:51:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 11:51:45,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 11:51:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 11:51:45,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 11:51:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 11:51:45,719 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 11:51:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 11:51:45,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 11:51:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:51:45,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:51:45,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 11:51:45,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 11:51:45,720 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 11:51:45,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 11:51:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 11:51:45,721 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 11:51:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:51:45,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:51:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:51:45,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:51:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 11:51:45,723 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 11:51:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-20 11:51:45,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-20 11:51:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure rr_init1 [2022-11-20 11:51:45,724 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_init1 [2022-11-20 11:51:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 11:51:45,724 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 11:51:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-20 11:51:45,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-20 11:51:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:51:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure rr_ioctl [2022-11-20 11:51:45,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_ioctl [2022-11-20 11:51:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-20 11:51:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:51:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-20 11:51:45,726 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-20 11:51:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 11:51:45,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 11:51:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 11:51:45,727 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 11:51:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 11:51:45,728 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 11:51:45,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 11:51:45,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 11:51:45,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 11:51:45,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:51:45,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:51:45,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:51:45,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:51:45,730 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-20 11:51:45,730 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-20 11:51:45,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 11:51:45,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 11:51:45,731 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-20 11:51:45,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-20 11:51:45,731 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 11:51:45,731 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 11:51:45,731 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-11-20 11:51:45,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-11-20 11:51:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure set_rraddr [2022-11-20 11:51:45,732 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rraddr [2022-11-20 11:51:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 11:51:45,733 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 11:51:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 11:51:45,733 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 11:51:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom_word [2022-11-20 11:51:45,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom_word [2022-11-20 11:51:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure hippi_mac_addr [2022-11-20 11:51:45,773 INFO L138 BoogieDeclarations]: Found implementation of procedure hippi_mac_addr [2022-11-20 11:51:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 11:51:45,773 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 11:51:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom [2022-11-20 11:51:45,773 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom [2022-11-20 11:51:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 11:51:45,773 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 11:51:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 11:51:45,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 11:51:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 11:51:45,774 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 11:51:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 11:51:45,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 11:51:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure hippi_change_mtu [2022-11-20 11:51:45,774 INFO L138 BoogieDeclarations]: Found implementation of procedure hippi_change_mtu [2022-11-20 11:51:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:51:45,774 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:51:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 11:51:45,775 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 11:51:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 11:51:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 11:51:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 11:51:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 11:51:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:51:45,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:51:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 11:51:45,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 11:51:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:51:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 11:51:45,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 11:51:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:51:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 11:51:45,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 11:51:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:51:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 11:51:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 11:51:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-20 11:51:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-20 11:51:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-20 11:51:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-20 11:51:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 11:51:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_tx [2022-11-20 11:51:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_tx [2022-11-20 11:51:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 11:51:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 11:51:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 11:51:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 11:51:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-20 11:51:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-20 11:51:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-20 11:51:45,779 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-20 11:51:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 11:51:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:51:45,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:51:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_rx [2022-11-20 11:51:45,779 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_rx [2022-11-20 11:51:46,591 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:51:46,596 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:51:59,731 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 11:52:10,866 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:52:10,892 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:52:10,892 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:52:10,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:52:10 BoogieIcfgContainer [2022-11-20 11:52:10,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:52:10,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:52:10,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:52:10,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:52:10,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:51:41" (1/3) ... [2022-11-20 11:52:10,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cce4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:52:10, skipping insertion in model container [2022-11-20 11:52:10,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:45" (2/3) ... [2022-11-20 11:52:10,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cce4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:52:10, skipping insertion in model container [2022-11-20 11:52:10,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:52:10" (3/3) ... [2022-11-20 11:52:10,912 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2022-11-20 11:52:10,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:52:10,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:52:11,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:52:11,050 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;@6c25ba18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:52:11,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:52:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 1172 states, 767 states have (on average 1.302477183833116) internal successors, (999), 792 states have internal predecessors, (999), 351 states have call successors, (351), 53 states have call predecessors, (351), 52 states have return successors, (345), 335 states have call predecessors, (345), 345 states have call successors, (345) [2022-11-20 11:52:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:52:11,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:11,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:52:11,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash 207288238, now seen corresponding path program 1 times [2022-11-20 11:52:11,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:11,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454381087] [2022-11-20 11:52:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:11,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:11,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:11,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:11,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 11:52:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:12,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:52:12,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 11:52:12,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:12,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:12,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454381087] [2022-11-20 11:52:12,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454381087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:12,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:12,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:52:12,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184873651] [2022-11-20 11:52:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:12,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:52:12,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:52:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:52:12,472 INFO L87 Difference]: Start difference. First operand has 1172 states, 767 states have (on average 1.302477183833116) internal successors, (999), 792 states have internal predecessors, (999), 351 states have call successors, (351), 53 states have call predecessors, (351), 52 states have return successors, (345), 335 states have call predecessors, (345), 345 states have call successors, (345) 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:52:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:12,648 INFO L93 Difference]: Finished difference Result 2339 states and 3423 transitions. [2022-11-20 11:52:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:52:12,651 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2022-11-20 11:52:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:12,675 INFO L225 Difference]: With dead ends: 2339 [2022-11-20 11:52:12,676 INFO L226 Difference]: Without dead ends: 1151 [2022-11-20 11:52:12,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 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 11:52:12,703 INFO L413 NwaCegarLoop]: 1690 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, 1690 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 11:52:12,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:52:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-11-20 11:52:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1151. [2022-11-20 11:52:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 754 states have (on average 1.2877984084880636) internal successors, (971), 771 states have internal predecessors, (971), 345 states have call successors, (345), 52 states have call predecessors, (345), 51 states have return successors, (344), 334 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-20 11:52:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1660 transitions. [2022-11-20 11:52:12,891 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1660 transitions. Word has length 118 [2022-11-20 11:52:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:12,892 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1660 transitions. [2022-11-20 11:52:12,892 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:52:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1660 transitions. [2022-11-20 11:52:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 11:52:12,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:12,898 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:52:12,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:13,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:13,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:13,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1736583835, now seen corresponding path program 1 times [2022-11-20 11:52:13,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:13,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182915777] [2022-11-20 11:52:13,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:13,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:13,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:13,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:13,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 11:52:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:52:14,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 11:52:14,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:14,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:14,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182915777] [2022-11-20 11:52:14,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182915777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:14,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:14,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:52:14,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798650200] [2022-11-20 11:52:14,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:14,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:52:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:52:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:52:14,515 INFO L87 Difference]: Start difference. First operand 1151 states and 1660 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:52:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:14,953 INFO L93 Difference]: Finished difference Result 2296 states and 3315 transitions. [2022-11-20 11:52:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:52:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-11-20 11:52:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:14,968 INFO L225 Difference]: With dead ends: 2296 [2022-11-20 11:52:14,968 INFO L226 Difference]: Without dead ends: 1152 [2022-11-20 11:52:14,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:52:14,981 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 6 mSDsluCounter, 6603 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:14,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8258 Invalid, 42 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:52:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-11-20 11:52:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2022-11-20 11:52:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 755 states have (on average 1.2874172185430464) internal successors, (972), 772 states have internal predecessors, (972), 345 states have call successors, (345), 52 states have call predecessors, (345), 51 states have return successors, (344), 334 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-20 11:52:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1661 transitions. [2022-11-20 11:52:15,075 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1661 transitions. Word has length 117 [2022-11-20 11:52:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:15,079 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1661 transitions. [2022-11-20 11:52:15,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:52:15,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1661 transitions. [2022-11-20 11:52:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 11:52:15,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:15,085 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:52:15,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:15,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:15,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:15,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:15,287 INFO L85 PathProgramCache]: Analyzing trace with hash -270397990, now seen corresponding path program 1 times [2022-11-20 11:52:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:15,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275600266] [2022-11-20 11:52:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:15,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:15,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:15,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:15,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 11:52:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:16,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:52:16,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-20 11:52:16,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-20 11:52:17,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:17,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275600266] [2022-11-20 11:52:17,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275600266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:17,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:52:17,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 11:52:17,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748798971] [2022-11-20 11:52:17,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:17,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:52:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:52:17,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:52:17,382 INFO L87 Difference]: Start difference. First operand 1152 states and 1661 transitions. Second operand has 11 states, 9 states have (on average 7.777777777777778) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 11:52:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:18,034 INFO L93 Difference]: Finished difference Result 2298 states and 3317 transitions. [2022-11-20 11:52:18,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:52:18,035 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.777777777777778) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 120 [2022-11-20 11:52:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:18,043 INFO L225 Difference]: With dead ends: 2298 [2022-11-20 11:52:18,043 INFO L226 Difference]: Without dead ends: 1153 [2022-11-20 11:52:18,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:52:18,054 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 7 mSDsluCounter, 13205 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14860 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:18,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 14860 Invalid, 87 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:52:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2022-11-20 11:52:18,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2022-11-20 11:52:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 756 states have (on average 1.287037037037037) internal successors, (973), 773 states have internal predecessors, (973), 345 states have call successors, (345), 52 states have call predecessors, (345), 51 states have return successors, (344), 334 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-20 11:52:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1662 transitions. [2022-11-20 11:52:18,119 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1662 transitions. Word has length 120 [2022-11-20 11:52:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:18,121 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1662 transitions. [2022-11-20 11:52:18,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.777777777777778) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 11:52:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1662 transitions. [2022-11-20 11:52:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 11:52:18,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:18,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:52:18,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:18,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:18,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1154460517, now seen corresponding path program 1 times [2022-11-20 11:52:18,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:18,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993954783] [2022-11-20 11:52:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:18,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:18,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:18,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:18,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:52:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:19,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:52:19,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-20 11:52:19,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 11:52:20,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:20,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993954783] [2022-11-20 11:52:20,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993954783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:20,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:52:20,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-20 11:52:20,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148293852] [2022-11-20 11:52:20,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:20,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:52:20,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:20,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:52:20,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:52:20,742 INFO L87 Difference]: Start difference. First operand 1153 states and 1662 transitions. Second operand has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 11:52:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:21,362 INFO L93 Difference]: Finished difference Result 2300 states and 3319 transitions. [2022-11-20 11:52:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:52:21,363 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 121 [2022-11-20 11:52:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:21,372 INFO L225 Difference]: With dead ends: 2300 [2022-11-20 11:52:21,372 INFO L226 Difference]: Without dead ends: 1154 [2022-11-20 11:52:21,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:52:21,384 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 14 mSDsluCounter, 9907 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11562 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:21,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11562 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:52:21,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-20 11:52:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2022-11-20 11:52:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 757 states have (on average 1.2866578599735798) internal successors, (974), 774 states have internal predecessors, (974), 345 states have call successors, (345), 52 states have call predecessors, (345), 51 states have return successors, (344), 334 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-20 11:52:21,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1663 transitions. [2022-11-20 11:52:21,444 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1663 transitions. Word has length 121 [2022-11-20 11:52:21,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:21,445 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1663 transitions. [2022-11-20 11:52:21,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 11:52:21,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1663 transitions. [2022-11-20 11:52:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:52:21,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:21,448 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:52:21,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:21,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:21,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:21,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash 613120730, now seen corresponding path program 2 times [2022-11-20 11:52:21,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:21,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456558665] [2022-11-20 11:52:21,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:52:21,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:21,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:21,672 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:21,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 11:52:22,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:52:22,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:52:22,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:52:22,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-20 11:52:22,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:22,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456558665] [2022-11-20 11:52:22,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456558665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:22,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:22,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:52:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273104523] [2022-11-20 11:52:22,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:22,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:52:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:52:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:52:22,531 INFO L87 Difference]: Start difference. First operand 1154 states and 1663 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 11:52:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:22,966 INFO L93 Difference]: Finished difference Result 3051 states and 4378 transitions. [2022-11-20 11:52:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:52:22,967 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 124 [2022-11-20 11:52:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:22,980 INFO L225 Difference]: With dead ends: 3051 [2022-11-20 11:52:22,980 INFO L226 Difference]: Without dead ends: 1917 [2022-11-20 11:52:22,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:52:22,987 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 1115 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:22,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 3459 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:52:22,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-11-20 11:52:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1907. [2022-11-20 11:52:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1244 states have (on average 1.279742765273312) internal successors, (1592), 1280 states have internal predecessors, (1592), 570 states have call successors, (570), 93 states have call predecessors, (570), 92 states have return successors, (569), 546 states have call predecessors, (569), 569 states have call successors, (569) [2022-11-20 11:52:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2731 transitions. [2022-11-20 11:52:23,138 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2731 transitions. Word has length 124 [2022-11-20 11:52:23,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:23,139 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2731 transitions. [2022-11-20 11:52:23,140 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 11:52:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2731 transitions. [2022-11-20 11:52:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-20 11:52:23,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:23,143 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:23,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:23,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:23,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash -158127989, now seen corresponding path program 1 times [2022-11-20 11:52:23,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:23,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757571778] [2022-11-20 11:52:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:23,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:23,370 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:23,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 11:52:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:24,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:52:24,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-20 11:52:24,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 11:52:26,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:26,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757571778] [2022-11-20 11:52:26,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757571778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:26,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:52:26,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-20 11:52:26,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123357373] [2022-11-20 11:52:26,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:26,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:52:26,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:52:26,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:52:26,189 INFO L87 Difference]: Start difference. First operand 1907 states and 2731 transitions. Second operand has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 11:52:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:27,035 INFO L93 Difference]: Finished difference Result 3811 states and 5462 transitions. [2022-11-20 11:52:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:52:27,036 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 149 [2022-11-20 11:52:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:27,047 INFO L225 Difference]: With dead ends: 3811 [2022-11-20 11:52:27,047 INFO L226 Difference]: Without dead ends: 1909 [2022-11-20 11:52:27,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:52:27,057 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9 mSDsluCounter, 13202 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 14857 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:27,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 14857 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:52:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2022-11-20 11:52:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1909. [2022-11-20 11:52:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1246 states have (on average 1.2792937399678972) internal successors, (1594), 1282 states have internal predecessors, (1594), 570 states have call successors, (570), 93 states have call predecessors, (570), 92 states have return successors, (569), 546 states have call predecessors, (569), 569 states have call successors, (569) [2022-11-20 11:52:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2733 transitions. [2022-11-20 11:52:27,175 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2733 transitions. Word has length 149 [2022-11-20 11:52:27,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:27,175 INFO L495 AbstractCegarLoop]: Abstraction has 1909 states and 2733 transitions. [2022-11-20 11:52:27,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 11:52:27,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2733 transitions. [2022-11-20 11:52:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-20 11:52:27,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:27,179 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:27,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:27,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:27,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1477428, now seen corresponding path program 1 times [2022-11-20 11:52:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:27,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196004069] [2022-11-20 11:52:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:27,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:27,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:27,394 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:27,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 11:52:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:28,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:52:28,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 11:52:29,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:29,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:29,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196004069] [2022-11-20 11:52:29,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196004069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:29,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:29,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:52:29,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514879287] [2022-11-20 11:52:29,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:29,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:52:29,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:52:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:52:29,322 INFO L87 Difference]: Start difference. First operand 1909 states and 2733 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:52:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:29,748 INFO L93 Difference]: Finished difference Result 5708 states and 8179 transitions. [2022-11-20 11:52:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:52:29,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 152 [2022-11-20 11:52:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:29,781 INFO L225 Difference]: With dead ends: 5708 [2022-11-20 11:52:29,781 INFO L226 Difference]: Without dead ends: 3819 [2022-11-20 11:52:29,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:52:29,795 INFO L413 NwaCegarLoop]: 1994 mSDtfsCounter, 1614 mSDsluCounter, 5604 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 7598 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:29,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 7598 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:52:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2022-11-20 11:52:30,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3804. [2022-11-20 11:52:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 2486 states have (on average 1.2787610619469028) internal successors, (3179), 2558 states have internal predecessors, (3179), 1132 states have call successors, (1132), 186 states have call predecessors, (1132), 185 states have return successors, (1131), 1085 states have call predecessors, (1131), 1131 states have call successors, (1131) [2022-11-20 11:52:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5442 transitions. [2022-11-20 11:52:30,148 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5442 transitions. Word has length 152 [2022-11-20 11:52:30,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:30,149 INFO L495 AbstractCegarLoop]: Abstraction has 3804 states and 5442 transitions. [2022-11-20 11:52:30,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:52:30,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5442 transitions. [2022-11-20 11:52:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-20 11:52:30,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:30,153 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:30,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:30,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:30,366 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:30,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:30,367 INFO L85 PathProgramCache]: Analyzing trace with hash 987124297, now seen corresponding path program 1 times [2022-11-20 11:52:30,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:30,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638952775] [2022-11-20 11:52:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:30,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:30,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:30,370 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:30,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 11:52:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:31,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:52:31,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 11:52:32,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:32,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:32,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638952775] [2022-11-20 11:52:32,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638952775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:32,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:32,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:52:32,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020933419] [2022-11-20 11:52:32,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:32,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:52:32,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:52:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:52:32,120 INFO L87 Difference]: Start difference. First operand 3804 states and 5442 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:52:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:32,831 INFO L93 Difference]: Finished difference Result 11409 states and 16327 transitions. [2022-11-20 11:52:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:52:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 150 [2022-11-20 11:52:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:32,965 INFO L225 Difference]: With dead ends: 11409 [2022-11-20 11:52:32,966 INFO L226 Difference]: Without dead ends: 7625 [2022-11-20 11:52:32,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:52:32,987 INFO L413 NwaCegarLoop]: 2494 mSDtfsCounter, 1614 mSDsluCounter, 6606 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 9100 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:32,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 9100 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:52:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2022-11-20 11:52:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7570. [2022-11-20 11:52:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 4944 states have (on average 1.2787216828478964) internal successors, (6322), 5102 states have internal predecessors, (6322), 2254 states have call successors, (2254), 372 states have call predecessors, (2254), 371 states have return successors, (2253), 2147 states have call predecessors, (2253), 2253 states have call successors, (2253) [2022-11-20 11:52:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 10829 transitions. [2022-11-20 11:52:33,694 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 10829 transitions. Word has length 150 [2022-11-20 11:52:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:33,695 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 10829 transitions. [2022-11-20 11:52:33,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:52:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 10829 transitions. [2022-11-20 11:52:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 11:52:33,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:33,700 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:33,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:33,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:33,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:33,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1565555346, now seen corresponding path program 1 times [2022-11-20 11:52:33,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:33,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580317386] [2022-11-20 11:52:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:33,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:33,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:33,927 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:33,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 11:52:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:35,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:52:35,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 11:52:35,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:35,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:35,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580317386] [2022-11-20 11:52:35,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580317386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:35,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:35,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:52:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586364341] [2022-11-20 11:52:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:35,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:52:35,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:52:35,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:52:35,834 INFO L87 Difference]: Start difference. First operand 7570 states and 10829 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:52:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:37,014 INFO L93 Difference]: Finished difference Result 22758 states and 32555 transitions. [2022-11-20 11:52:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:52:37,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 153 [2022-11-20 11:52:37,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:37,119 INFO L225 Difference]: With dead ends: 22758 [2022-11-20 11:52:37,119 INFO L226 Difference]: Without dead ends: 15208 [2022-11-20 11:52:37,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:52:37,162 INFO L413 NwaCegarLoop]: 1994 mSDtfsCounter, 1615 mSDsluCounter, 5604 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 7598 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:37,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 7598 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:52:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15208 states. [2022-11-20 11:52:38,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15208 to 15133. [2022-11-20 11:52:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15133 states, 9891 states have (on average 1.2781316348195328) internal successors, (12642), 10203 states have internal predecessors, (12642), 4496 states have call successors, (4496), 746 states have call predecessors, (4496), 745 states have return successors, (4495), 4287 states have call predecessors, (4495), 4495 states have call successors, (4495) [2022-11-20 11:52:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15133 states to 15133 states and 21633 transitions. [2022-11-20 11:52:38,623 INFO L78 Accepts]: Start accepts. Automaton has 15133 states and 21633 transitions. Word has length 153 [2022-11-20 11:52:38,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:38,624 INFO L495 AbstractCegarLoop]: Abstraction has 15133 states and 21633 transitions. [2022-11-20 11:52:38,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:52:38,625 INFO L276 IsEmpty]: Start isEmpty. Operand 15133 states and 21633 transitions. [2022-11-20 11:52:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-20 11:52:38,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:38,629 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:38,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:38,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:38,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1653292753, now seen corresponding path program 2 times [2022-11-20 11:52:38,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:38,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304849877] [2022-11-20 11:52:38,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:52:38,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:38,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:38,859 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:38,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 11:52:39,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:52:39,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:52:40,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:52:40,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 11:52:40,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:40,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:40,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304849877] [2022-11-20 11:52:40,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304849877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:40,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:40,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:52:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957888031] [2022-11-20 11:52:40,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:40,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:52:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:52:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:52:40,144 INFO L87 Difference]: Start difference. First operand 15133 states and 21633 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 11:52:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:41,142 INFO L93 Difference]: Finished difference Result 15168 states and 21667 transitions. [2022-11-20 11:52:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:52:41,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 151 [2022-11-20 11:52:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:41,222 INFO L225 Difference]: With dead ends: 15168 [2022-11-20 11:52:41,223 INFO L226 Difference]: Without dead ends: 15165 [2022-11-20 11:52:41,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:52:41,233 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10 mSDsluCounter, 6597 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8250 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:41,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8250 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:52:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15165 states. [2022-11-20 11:52:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15165 to 15165. [2022-11-20 11:52:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 9915 states have (on average 1.2766515380736259) internal successors, (12658), 10227 states have internal predecessors, (12658), 4496 states have call successors, (4496), 754 states have call predecessors, (4496), 753 states have return successors, (4495), 4287 states have call predecessors, (4495), 4495 states have call successors, (4495) [2022-11-20 11:52:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 21649 transitions. [2022-11-20 11:52:42,541 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 21649 transitions. Word has length 151 [2022-11-20 11:52:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:42,544 INFO L495 AbstractCegarLoop]: Abstraction has 15165 states and 21649 transitions. [2022-11-20 11:52:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 11:52:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 21649 transitions. [2022-11-20 11:52:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-20 11:52:42,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:42,562 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:52:42,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 11:52:42,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:42,779 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1902988032, now seen corresponding path program 1 times [2022-11-20 11:52:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:42,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467206870] [2022-11-20 11:52:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:42,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:42,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:42,784 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:42,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 11:52:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:44,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2232 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:52:44,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2022-11-20 11:52:45,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:45,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:45,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467206870] [2022-11-20 11:52:45,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467206870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:45,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:45,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:52:45,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841431599] [2022-11-20 11:52:45,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:45,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:52:45,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:45,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:52:45,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:52:45,005 INFO L87 Difference]: Start difference. First operand 15165 states and 21649 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 11:52:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:47,088 INFO L93 Difference]: Finished difference Result 43297 states and 61977 transitions. [2022-11-20 11:52:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:52:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 409 [2022-11-20 11:52:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:47,240 INFO L225 Difference]: With dead ends: 43297 [2022-11-20 11:52:47,240 INFO L226 Difference]: Without dead ends: 28152 [2022-11-20 11:52:47,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:52:47,304 INFO L413 NwaCegarLoop]: 2555 mSDtfsCounter, 1464 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 4177 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:47,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 4177 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:52:47,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28152 states. [2022-11-20 11:52:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28152 to 28133. [2022-11-20 11:52:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28133 states, 18183 states have (on average 1.2783919045262058) internal successors, (23245), 18767 states have internal predecessors, (23245), 8538 states have call successors, (8538), 1412 states have call predecessors, (8538), 1411 states have return successors, (8537), 8145 states have call predecessors, (8537), 8537 states have call successors, (8537) [2022-11-20 11:52:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28133 states to 28133 states and 40320 transitions. [2022-11-20 11:52:50,309 INFO L78 Accepts]: Start accepts. Automaton has 28133 states and 40320 transitions. Word has length 409 [2022-11-20 11:52:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:50,310 INFO L495 AbstractCegarLoop]: Abstraction has 28133 states and 40320 transitions. [2022-11-20 11:52:50,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 11:52:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28133 states and 40320 transitions. [2022-11-20 11:52:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-20 11:52:50,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:50,344 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:52:50,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:50,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:50,571 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:50,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1012170049, now seen corresponding path program 1 times [2022-11-20 11:52:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:50,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836621560] [2022-11-20 11:52:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:50,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:50,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:50,578 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:52:50,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 11:52:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:53,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:52:53,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-11-20 11:52:53,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:53,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:53,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836621560] [2022-11-20 11:52:53,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836621560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:53,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:53,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:52:53,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590610628] [2022-11-20 11:52:53,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:53,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:52:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:53,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:52:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:52:53,540 INFO L87 Difference]: Start difference. First operand 28133 states and 40320 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 11:52:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:57,171 INFO L93 Difference]: Finished difference Result 62160 states and 89958 transitions. [2022-11-20 11:52:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:52:57,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) Word has length 440 [2022-11-20 11:52:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:57,492 INFO L225 Difference]: With dead ends: 62160 [2022-11-20 11:52:57,492 INFO L226 Difference]: Without dead ends: 34057 [2022-11-20 11:52:57,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 436 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 11:52:57,633 INFO L413 NwaCegarLoop]: 2055 mSDtfsCounter, 617 mSDsluCounter, 7542 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 9597 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:57,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 9597 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:52:57,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34057 states. [2022-11-20 11:53:00,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34057 to 28213. [2022-11-20 11:53:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28213 states, 18247 states have (on average 1.2774154655559817) internal successors, (23309), 18831 states have internal predecessors, (23309), 8538 states have call successors, (8538), 1412 states have call predecessors, (8538), 1427 states have return successors, (8625), 8161 states have call predecessors, (8625), 8537 states have call successors, (8625) [2022-11-20 11:53:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28213 states to 28213 states and 40472 transitions. [2022-11-20 11:53:01,032 INFO L78 Accepts]: Start accepts. Automaton has 28213 states and 40472 transitions. Word has length 440 [2022-11-20 11:53:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:01,033 INFO L495 AbstractCegarLoop]: Abstraction has 28213 states and 40472 transitions. [2022-11-20 11:53:01,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 11:53:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 28213 states and 40472 transitions. [2022-11-20 11:53:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-20 11:53:01,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:01,061 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:53:01,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:01,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:01,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash -367656370, now seen corresponding path program 1 times [2022-11-20 11:53:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:53:01,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14897697] [2022-11-20 11:53:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:01,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:01,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:53:01,292 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:53:01,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 11:53:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:03,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:53:03,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2022-11-20 11:53:04,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:53:04,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:04,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14897697] [2022-11-20 11:53:04,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14897697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:04,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:04,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:53:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234950105] [2022-11-20 11:53:04,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:04,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:53:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:04,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:53:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:53:04,108 INFO L87 Difference]: Start difference. First operand 28213 states and 40472 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 11:53:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:06,995 INFO L93 Difference]: Finished difference Result 58300 states and 83796 transitions. [2022-11-20 11:53:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:53:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 445 [2022-11-20 11:53:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:07,164 INFO L225 Difference]: With dead ends: 58300 [2022-11-20 11:53:07,165 INFO L226 Difference]: Without dead ends: 30117 [2022-11-20 11:53:07,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 440 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 11:53:07,284 INFO L413 NwaCegarLoop]: 1880 mSDtfsCounter, 156 mSDsluCounter, 7316 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 9196 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:07,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 9196 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:53:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30117 states. [2022-11-20 11:53:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30117 to 28261. [2022-11-20 11:53:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28261 states, 18295 states have (on average 1.276687619568188) internal successors, (23357), 18863 states have internal predecessors, (23357), 8538 states have call successors, (8538), 1412 states have call predecessors, (8538), 1427 states have return successors, (8625), 8177 states have call predecessors, (8625), 8537 states have call successors, (8625) [2022-11-20 11:53:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28261 states to 28261 states and 40520 transitions. [2022-11-20 11:53:10,095 INFO L78 Accepts]: Start accepts. Automaton has 28261 states and 40520 transitions. Word has length 445 [2022-11-20 11:53:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:10,096 INFO L495 AbstractCegarLoop]: Abstraction has 28261 states and 40520 transitions. [2022-11-20 11:53:10,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 11:53:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 28261 states and 40520 transitions. [2022-11-20 11:53:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-11-20 11:53:10,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:10,119 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:53:10,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:10,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:10,333 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1191685289, now seen corresponding path program 1 times [2022-11-20 11:53:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:53:10,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859225107] [2022-11-20 11:53:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:10,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:10,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:53:10,339 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:53:10,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 11:53:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:12,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:53:12,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-20 11:53:13,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:53:13,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:13,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859225107] [2022-11-20 11:53:13,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859225107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:13,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:13,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:53:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348860552] [2022-11-20 11:53:13,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:13,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:53:13,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:13,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:53:13,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:53:13,241 INFO L87 Difference]: Start difference. First operand 28261 states and 40520 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 6 states have internal predecessors, (156), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 11:53:18,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:18,814 INFO L93 Difference]: Finished difference Result 58268 states and 83756 transitions. [2022-11-20 11:53:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:53:18,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 6 states have internal predecessors, (156), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) Word has length 450 [2022-11-20 11:53:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:18,958 INFO L225 Difference]: With dead ends: 58268 [2022-11-20 11:53:18,959 INFO L226 Difference]: Without dead ends: 30037 [2022-11-20 11:53:19,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:53:19,058 INFO L413 NwaCegarLoop]: 1850 mSDtfsCounter, 131 mSDsluCounter, 10913 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 12763 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:19,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 12763 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 11:53:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30037 states. [2022-11-20 11:53:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30037 to 28357. [2022-11-20 11:53:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28357 states, 18375 states have (on average 1.2754829931972789) internal successors, (23437), 18927 states have internal predecessors, (23437), 8538 states have call successors, (8538), 1412 states have call predecessors, (8538), 1443 states have return successors, (8689), 8209 states have call predecessors, (8689), 8537 states have call successors, (8689) [2022-11-20 11:53:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28357 states to 28357 states and 40664 transitions. [2022-11-20 11:53:21,387 INFO L78 Accepts]: Start accepts. Automaton has 28357 states and 40664 transitions. Word has length 450 [2022-11-20 11:53:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:21,388 INFO L495 AbstractCegarLoop]: Abstraction has 28357 states and 40664 transitions. [2022-11-20 11:53:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 6 states have internal predecessors, (156), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 11:53:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 28357 states and 40664 transitions. [2022-11-20 11:53:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-11-20 11:53:21,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:21,411 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 11, 11, 11, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:53:21,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:21,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:21,635 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:21,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:21,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2078140209, now seen corresponding path program 1 times [2022-11-20 11:53:21,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:53:21,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677735434] [2022-11-20 11:53:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:21,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:21,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:53:21,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:53:21,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 11:53:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:24,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:53:24,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-20 11:53:24,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:53:24,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:24,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677735434] [2022-11-20 11:53:24,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677735434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:24,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:24,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:53:24,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540682752] [2022-11-20 11:53:24,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:24,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:53:24,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:53:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:53:24,760 INFO L87 Difference]: Start difference. First operand 28357 states and 40664 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 4 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-11-20 11:53:27,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:27,334 INFO L93 Difference]: Finished difference Result 57004 states and 82332 transitions. [2022-11-20 11:53:27,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:53:27,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 4 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 468 [2022-11-20 11:53:27,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:27,451 INFO L225 Difference]: With dead ends: 57004 [2022-11-20 11:53:27,451 INFO L226 Difference]: Without dead ends: 28485 [2022-11-20 11:53:27,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:53:27,569 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 15 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:27,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4932 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:53:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28485 states. [2022-11-20 11:53:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28485 to 28389. [2022-11-20 11:53:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28389 states, 18407 states have (on average 1.275004074536861) internal successors, (23469), 18959 states have internal predecessors, (23469), 8538 states have call successors, (8538), 1412 states have call predecessors, (8538), 1443 states have return successors, (8689), 8209 states have call predecessors, (8689), 8537 states have call successors, (8689) [2022-11-20 11:53:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28389 states to 28389 states and 40696 transitions. [2022-11-20 11:53:30,594 INFO L78 Accepts]: Start accepts. Automaton has 28389 states and 40696 transitions. Word has length 468 [2022-11-20 11:53:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:30,596 INFO L495 AbstractCegarLoop]: Abstraction has 28389 states and 40696 transitions. [2022-11-20 11:53:30,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 4 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-11-20 11:53:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 28389 states and 40696 transitions. [2022-11-20 11:53:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-11-20 11:53:30,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:30,625 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 13, 13, 11, 11, 11, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:53:30,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:30,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:30,851 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1349283821, now seen corresponding path program 1 times [2022-11-20 11:53:30,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:53:30,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435567885] [2022-11-20 11:53:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:30,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:30,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:53:30,857 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:53:30,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 11:53:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:33,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:53:33,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 566 proven. 1 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2022-11-20 11:53:34,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2022-11-20 11:53:35,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:35,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435567885] [2022-11-20 11:53:35,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435567885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:35,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:53:35,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 11:53:35,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489786953] [2022-11-20 11:53:35,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:35,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:53:35,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:53:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:53:35,437 INFO L87 Difference]: Start difference. First operand 28389 states and 40696 transitions. Second operand has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 8 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) [2022-11-20 11:53:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:38,667 INFO L93 Difference]: Finished difference Result 57884 states and 83724 transitions. [2022-11-20 11:53:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:53:38,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 8 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) Word has length 498 [2022-11-20 11:53:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:38,820 INFO L225 Difference]: With dead ends: 57884 [2022-11-20 11:53:38,820 INFO L226 Difference]: Without dead ends: 29237 [2022-11-20 11:53:38,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 986 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:53:38,934 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 64 mSDsluCounter, 6592 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:38,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 8285 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 11:53:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29237 states. [2022-11-20 11:53:41,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29237 to 29189. [2022-11-20 11:53:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29189 states, 18791 states have (on average 1.271938694055665) internal successors, (23901), 19343 states have internal predecessors, (23901), 8938 states have call successors, (8938), 1428 states have call predecessors, (8938), 1459 states have return successors, (9089), 8609 states have call predecessors, (9089), 8937 states have call successors, (9089) [2022-11-20 11:53:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29189 states to 29189 states and 41928 transitions. [2022-11-20 11:53:41,533 INFO L78 Accepts]: Start accepts. Automaton has 29189 states and 41928 transitions. Word has length 498 [2022-11-20 11:53:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:41,534 INFO L495 AbstractCegarLoop]: Abstraction has 29189 states and 41928 transitions. [2022-11-20 11:53:41,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 8 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) [2022-11-20 11:53:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 29189 states and 41928 transitions. [2022-11-20 11:53:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-11-20 11:53:41,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:41,551 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 22, 22, 12, 12, 12, 12, 12, 12, 11, 11, 11, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:53:41,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:41,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:41,767 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1272449806, now seen corresponding path program 1 times [2022-11-20 11:53:41,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:53:41,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573156521] [2022-11-20 11:53:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:41,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:53:41,772 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:53:41,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:44,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:53:44,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1224 proven. 28 refuted. 0 times theorem prover too weak. 1636 trivial. 0 not checked. [2022-11-20 11:53:45,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 4 proven. 194 refuted. 0 times theorem prover too weak. 2690 trivial. 0 not checked. [2022-11-20 11:53:46,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:46,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573156521] [2022-11-20 11:53:46,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573156521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:46,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:53:46,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2022-11-20 11:53:46,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472176401] [2022-11-20 11:53:46,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:46,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:53:46,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:46,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:53:46,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:53:46,438 INFO L87 Difference]: Start difference. First operand 29189 states and 41928 transitions. Second operand has 10 states, 10 states have (on average 18.7) internal successors, (187), 9 states have internal predecessors, (187), 7 states have call successors, (74), 2 states have call predecessors, (74), 3 states have return successors, (71), 8 states have call predecessors, (71), 7 states have call successors, (71) [2022-11-20 11:53:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:49,809 INFO L93 Difference]: Finished difference Result 59420 states and 86364 transitions. [2022-11-20 11:53:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:53:49,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 9 states have internal predecessors, (187), 7 states have call successors, (74), 2 states have call predecessors, (74), 3 states have return successors, (71), 8 states have call predecessors, (71), 7 states have call successors, (71) Word has length 589 [2022-11-20 11:53:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:49,948 INFO L225 Difference]: With dead ends: 59420 [2022-11-20 11:53:49,948 INFO L226 Difference]: Without dead ends: 30261 [2022-11-20 11:53:50,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 1168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:53:50,058 INFO L413 NwaCegarLoop]: 1705 mSDtfsCounter, 12 mSDsluCounter, 13486 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 15191 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:50,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 15191 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:53:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30261 states. [2022-11-20 11:53:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30261 to 29573. [2022-11-20 11:53:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29573 states, 18983 states have (on average 1.2708739398409103) internal successors, (24125), 19535 states have internal predecessors, (24125), 9098 states have call successors, (9098), 1428 states have call predecessors, (9098), 1491 states have return successors, (9281), 8801 states have call predecessors, (9281), 9097 states have call successors, (9281) [2022-11-20 11:53:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29573 states to 29573 states and 42504 transitions. [2022-11-20 11:53:52,434 INFO L78 Accepts]: Start accepts. Automaton has 29573 states and 42504 transitions. Word has length 589 [2022-11-20 11:53:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:52,435 INFO L495 AbstractCegarLoop]: Abstraction has 29573 states and 42504 transitions. [2022-11-20 11:53:52,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 9 states have internal predecessors, (187), 7 states have call successors, (74), 2 states have call predecessors, (74), 3 states have return successors, (71), 8 states have call predecessors, (71), 7 states have call successors, (71) [2022-11-20 11:53:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 29573 states and 42504 transitions. [2022-11-20 11:53:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2022-11-20 11:53:52,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:52,447 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 24, 24, 14, 14, 14, 14, 14, 14, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:53:52,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:52,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:52,648 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:52,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1173367650, now seen corresponding path program 1 times [2022-11-20 11:53:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:53:52,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855617728] [2022-11-20 11:53:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:52,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:52,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:53:52,656 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:53:52,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:55,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:53:55,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 3096 trivial. 0 not checked. [2022-11-20 11:53:56,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:53:56,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:56,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855617728] [2022-11-20 11:53:56,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855617728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:56,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:56,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:53:56,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246320075] [2022-11-20 11:53:56,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:56,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:53:56,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:53:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:53:56,099 INFO L87 Difference]: Start difference. First operand 29573 states and 42504 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (44), 4 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-20 11:53:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:59,232 INFO L93 Difference]: Finished difference Result 60828 states and 87612 transitions. [2022-11-20 11:53:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:53:59,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (44), 4 states have call predecessors, (44), 2 states have call successors, (44) Word has length 603 [2022-11-20 11:53:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:59,403 INFO L225 Difference]: With dead ends: 60828 [2022-11-20 11:53:59,403 INFO L226 Difference]: Without dead ends: 31285 [2022-11-20 11:53:59,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:53:59,512 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 131 mSDsluCounter, 10921 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 12773 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:59,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 12773 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:53:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31285 states. [2022-11-20 11:54:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31285 to 29605. [2022-11-20 11:54:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29605 states, 19015 states have (on average 1.2704180909808047) internal successors, (24157), 19551 states have internal predecessors, (24157), 9098 states have call successors, (9098), 1428 states have call predecessors, (9098), 1491 states have return successors, (9281), 8817 states have call predecessors, (9281), 9097 states have call successors, (9281) [2022-11-20 11:54:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29605 states to 29605 states and 42536 transitions. [2022-11-20 11:54:02,140 INFO L78 Accepts]: Start accepts. Automaton has 29605 states and 42536 transitions. Word has length 603 [2022-11-20 11:54:02,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:02,141 INFO L495 AbstractCegarLoop]: Abstraction has 29605 states and 42536 transitions. [2022-11-20 11:54:02,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (44), 4 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-20 11:54:02,142 INFO L276 IsEmpty]: Start isEmpty. Operand 29605 states and 42536 transitions. [2022-11-20 11:54:02,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2022-11-20 11:54:02,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:02,171 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 24, 24, 14, 14, 14, 14, 14, 14, 11, 11, 11, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:54:02,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -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 11:54:02,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:02,387 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:54:02,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash -3617246, now seen corresponding path program 1 times [2022-11-20 11:54:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:02,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204880897] [2022-11-20 11:54:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:02,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:02,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:02,394 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:02,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db62b47c-6d2e-4c95-955e-d6b56ab5d4b6/bin/uautomizer-ug76WZFUDN/mathsat -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 11:54:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:06,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:54:06,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3316 backedges. 1534 proven. 45 refuted. 0 times theorem prover too weak. 1737 trivial. 0 not checked. [2022-11-20 11:54:06,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3316 backedges. 131 proven. 159 refuted. 0 times theorem prover too weak. 3026 trivial. 0 not checked. [2022-11-20 11:54:08,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:08,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204880897] [2022-11-20 11:54:08,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204880897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:08,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:54:08,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:54:08,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336699267] [2022-11-20 11:54:08,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:08,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:54:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:08,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:54:08,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:54:08,642 INFO L87 Difference]: Start difference. First operand 29605 states and 42536 transitions. Second operand has 16 states, 16 states have (on average 13.1875) internal successors, (211), 16 states have internal predecessors, (211), 14 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (99), 14 states have call predecessors, (99), 14 states have call successors, (99) [2022-11-20 11:54:13,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:13,348 INFO L93 Difference]: Finished difference Result 59644 states and 86300 transitions. [2022-11-20 11:54:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:54:13,348 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.1875) internal successors, (211), 16 states have internal predecessors, (211), 14 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (99), 14 states have call predecessors, (99), 14 states have call successors, (99) Word has length 615 [2022-11-20 11:54:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:13,453 INFO L225 Difference]: With dead ends: 59644 [2022-11-20 11:54:13,453 INFO L226 Difference]: Without dead ends: 29461 [2022-11-20 11:54:13,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1214 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:54:13,536 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 129 mSDsluCounter, 11631 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 13355 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:13,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 13355 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:54:13,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29461 states.