./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/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 f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:24:05,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:24:05,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:24:05,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:24:05,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:24:05,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:24:05,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:24:05,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:24:05,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:24:05,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:24:05,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:24:05,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:24:05,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:24:05,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:24:05,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:24:05,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:24:05,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:24:05,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:24:05,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:24:05,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:24:05,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:24:05,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:24:05,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:24:05,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:24:05,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:24:05,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:24:05,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:24:05,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:24:05,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:24:05,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:24:05,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:24:05,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:24:05,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:24:05,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:24:05,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:24:05,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:24:05,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:24:05,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:24:05,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:24:05,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:24:05,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:24:05,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:24:05,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:24:05,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:24:05,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:24:05,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:24:05,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:24:05,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:24:05,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:24:05,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:24:05,890 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:24:05,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:24:05,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:24:05,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:24:05,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:24:05,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:24:05,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:24:05,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:24:05,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:24:05,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:24:05,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:24:05,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:24:05,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:24:05,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:05,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:24:05,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:24:05,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:24:05,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:24:05,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:24:05,896 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:24:05,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:24:05,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:24:05,897 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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b [2022-11-20 12:24:06,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:24:06,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:24:06,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:24:06,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:24:06,245 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:24:06,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-11-20 12:24:09,510 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:24:10,116 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:24:10,117 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-11-20 12:24:10,158 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/data/c0df6e7ea/c9b1b05c81514564856b66daa7f3a4d6/FLAGe79c31e8b [2022-11-20 12:24:10,177 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/data/c0df6e7ea/c9b1b05c81514564856b66daa7f3a4d6 [2022-11-20 12:24:10,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:24:10,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:24:10,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:10,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:24:10,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:24:10,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:10" (1/1) ... [2022-11-20 12:24:10,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303370b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:10, skipping insertion in model container [2022-11-20 12:24:10,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:10" (1/1) ... [2022-11-20 12:24:10,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:24:10,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:24:10,972 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 12:24:10,979 INFO L158 Benchmark]: Toolchain (without parser) took 795.00ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 117.1MB in the end (delta: 4.5MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2022-11-20 12:24:10,979 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:24:10,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 792.15ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 117.1MB in the end (delta: 4.5MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2022-11-20 12:24:10,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 792.15ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 117.1MB in the end (delta: 4.5MB). Peak memory consumption was 43.4MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/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 f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:24:13,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:24:13,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:24:13,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:24:13,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:24:13,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:24:13,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:24:13,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:24:13,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:24:13,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:24:13,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:24:13,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:24:13,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:24:13,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:24:13,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:24:13,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:24:13,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:24:13,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:24:13,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:24:13,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:24:13,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:24:13,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:24:13,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:24:13,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:24:13,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:24:13,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:24:13,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:24:13,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:24:13,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:24:13,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:24:13,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:24:13,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:24:13,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:24:13,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:24:13,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:24:13,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:24:13,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:24:13,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:24:13,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:24:13,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:24:13,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:24:13,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:24:13,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:24:13,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:24:13,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:24:13,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:24:13,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:24:13,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:24:13,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:24:13,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:24:13,747 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:24:13,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:24:13,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:24:13,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:24:13,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:24:13,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:24:13,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:24:13,750 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:24:13,750 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:24:13,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:24:13,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:24:13,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:24:13,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:24:13,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:24:13,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:24:13,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:13,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:24:13,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:24:13,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:24:13,754 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:24:13,754 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:24:13,754 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:24:13,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:24:13,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:24:13,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:24:13,756 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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b [2022-11-20 12:24:14,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:24:14,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:24:14,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:24:14,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:24:14,227 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:24:14,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-11-20 12:24:17,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:24:18,001 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:24:18,002 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-11-20 12:24:18,062 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/data/e173569b4/d79bfb078e64438ebdfdbcc45dca55c4/FLAGa85826028 [2022-11-20 12:24:18,091 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/data/e173569b4/d79bfb078e64438ebdfdbcc45dca55c4 [2022-11-20 12:24:18,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:24:18,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:24:18,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:18,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:24:18,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:24:18,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:18" (1/1) ... [2022-11-20 12:24:18,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aef400b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:18, skipping insertion in model container [2022-11-20 12:24:18,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:18" (1/1) ... [2022-11-20 12:24:18,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:24:18,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:24:19,321 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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2022-11-20 12:24:19,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:19,883 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:24:19,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:24:20,160 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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2022-11-20 12:24:20,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:20,334 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:24:20,562 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_0431f9c6-3deb-467e-bccc-1dcf54acac9f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2022-11-20 12:24:20,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:20,842 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:24:20,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20 WrapperNode [2022-11-20 12:24:20,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:20,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:24:20,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:24:20,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:24:20,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:20,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,057 INFO L138 Inliner]: procedures = 194, calls = 578, calls flagged for inlining = 99, calls inlined = 93, statements flattened = 2299 [2022-11-20 12:24:21,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:24:21,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:24:21,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:24:21,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:24:21,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:24:21,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:24:21,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:24:21,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:24:21,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (1/1) ... [2022-11-20 12:24:21,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:21,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:21,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:24:21,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:24:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:24:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:24:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_push [2022-11-20 12:24:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_push [2022-11-20 12:24:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:24:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:24:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 12:24:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:24:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:24:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:24:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:24:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:24:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_hangup [2022-11-20 12:24:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_hangup [2022-11-20 12:24:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-20 12:24:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-20 12:24:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:24:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:24:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 12:24:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 12:24:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:24:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:24:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 12:24:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 12:24:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:24:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure ap_get [2022-11-20 12:24:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_get [2022-11-20 12:24:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:24:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-20 12:24:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-20 12:24:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-20 12:24:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-20 12:24:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:24:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:24:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:24:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:24:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:24:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:24:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 12:24:21,428 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 12:24:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:24:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:24:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 12:24:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-20 12:24:21,429 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-20 12:24:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 12:24:21,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 12:24:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 12:24:21,430 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 12:24:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 12:24:21,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 12:24:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-20 12:24:21,430 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-20 12:24:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure crc_ccitt_byte [2022-11-20 12:24:21,431 INFO L138 BoogieDeclarations]: Found implementation of procedure crc_ccitt_byte [2022-11-20 12:24:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure ap_put [2022-11-20 12:24:21,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_put [2022-11-20 12:24:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-11-20 12:24:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-11-20 12:24:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:24:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:24:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-20 12:24:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-20 12:24:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 12:24:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 12:24:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-11-20 12:24:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-11-20 12:24:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-11-20 12:24:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-11-20 12:24:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:24:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:24:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:24:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 12:24:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:24:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 12:24:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:24:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:24:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_close [2022-11-20 12:24:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_close [2022-11-20 12:24:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:24:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_poll [2022-11-20 12:24:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_poll [2022-11-20 12:24:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 12:24:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 12:24:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:24:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:24:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 12:24:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 12:24:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 12:24:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-20 12:24:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-20 12:24:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-20 12:24:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-20 12:24:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 12:24:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 12:24:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure async_lcp_peek [2022-11-20 12:24:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure async_lcp_peek [2022-11-20 12:24:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 12:24:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:24:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:24:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_ioctl [2022-11-20 12:24:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_ioctl [2022-11-20 12:24:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-20 12:24:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-20 12:24:22,079 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:24:22,084 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:24:23,339 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:24:34,768 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:24:34,782 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:24:34,782 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:24:34,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:24:34 BoogieIcfgContainer [2022-11-20 12:24:34,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:24:34,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:24:34,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:24:34,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:24:34,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:24:18" (1/3) ... [2022-11-20 12:24:34,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6146b7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:24:34, skipping insertion in model container [2022-11-20 12:24:34,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:20" (2/3) ... [2022-11-20 12:24:34,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6146b7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:24:34, skipping insertion in model container [2022-11-20 12:24:34,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:24:34" (3/3) ... [2022-11-20 12:24:34,797 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-11-20 12:24:34,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:24:34,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:24:34,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:24:34,928 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;@3095941, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:24:34,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:24:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 718 states, 564 states have (on average 1.4361702127659575) internal successors, (810), 578 states have internal predecessors, (810), 116 states have call successors, (116), 37 states have call predecessors, (116), 36 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-20 12:24:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 12:24:34,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:34,966 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:34,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:34,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash 192052637, now seen corresponding path program 1 times [2022-11-20 12:24:34,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:34,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420406582] [2022-11-20 12:24:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:34,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:34,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:35,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:24:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:35,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:24:35,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 12:24:35,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:35,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:35,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420406582] [2022-11-20 12:24:35,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420406582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:35,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:35,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:35,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304739753] [2022-11-20 12:24:35,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:35,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:35,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:35,861 INFO L87 Difference]: Start difference. First operand has 718 states, 564 states have (on average 1.4361702127659575) internal successors, (810), 578 states have internal predecessors, (810), 116 states have call successors, (116), 37 states have call predecessors, (116), 36 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 12:24:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:36,279 INFO L93 Difference]: Finished difference Result 2099 states and 3098 transitions. [2022-11-20 12:24:36,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:36,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 78 [2022-11-20 12:24:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:36,318 INFO L225 Difference]: With dead ends: 2099 [2022-11-20 12:24:36,318 INFO L226 Difference]: Without dead ends: 1370 [2022-11-20 12:24:36,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:36,342 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 963 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:36,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 2145 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:36,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2022-11-20 12:24:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2022-11-20 12:24:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1088 states have (on average 1.4227941176470589) internal successors, (1548), 1104 states have internal predecessors, (1548), 211 states have call successors, (211), 71 states have call predecessors, (211), 70 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2022-11-20 12:24:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1969 transitions. [2022-11-20 12:24:36,557 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1969 transitions. Word has length 78 [2022-11-20 12:24:36,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:36,557 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1969 transitions. [2022-11-20 12:24:36,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 12:24:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1969 transitions. [2022-11-20 12:24:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 12:24:36,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:36,572 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:36,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:24:36,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:36,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:36,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:36,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1136219045, now seen corresponding path program 1 times [2022-11-20 12:24:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:36,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137891695] [2022-11-20 12:24:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:36,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:36,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:36,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:36,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:24:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:37,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:24:37,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 12:24:37,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:37,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:37,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137891695] [2022-11-20 12:24:37,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137891695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:37,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:37,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:24:37,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100371387] [2022-11-20 12:24:37,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:37,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:37,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:37,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:37,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:37,509 INFO L87 Difference]: Start difference. First operand 1370 states and 1969 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 12:24:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:38,746 INFO L93 Difference]: Finished difference Result 3062 states and 4447 transitions. [2022-11-20 12:24:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:24:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2022-11-20 12:24:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:38,762 INFO L225 Difference]: With dead ends: 3062 [2022-11-20 12:24:38,764 INFO L226 Difference]: Without dead ends: 1716 [2022-11-20 12:24:38,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:24:38,773 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 1913 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:38,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 3629 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:24:38,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-11-20 12:24:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1373. [2022-11-20 12:24:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1091 states have (on average 1.4207149404216315) internal successors, (1550), 1107 states have internal predecessors, (1550), 211 states have call successors, (211), 71 states have call predecessors, (211), 70 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2022-11-20 12:24:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1971 transitions. [2022-11-20 12:24:38,928 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1971 transitions. Word has length 82 [2022-11-20 12:24:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:38,931 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 1971 transitions. [2022-11-20 12:24:38,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 12:24:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1971 transitions. [2022-11-20 12:24:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 12:24:38,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:38,934 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:38,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:39,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:39,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:39,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1529246055, now seen corresponding path program 1 times [2022-11-20 12:24:39,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:39,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134301659] [2022-11-20 12:24:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:39,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:39,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:39,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:39,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:24:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:39,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:24:39,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 12:24:40,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:40,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:40,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134301659] [2022-11-20 12:24:40,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134301659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:40,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:40,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:24:40,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618964834] [2022-11-20 12:24:40,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:40,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:40,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:40,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:40,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:40,033 INFO L87 Difference]: Start difference. First operand 1373 states and 1971 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 12:24:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:40,821 INFO L93 Difference]: Finished difference Result 4068 states and 5875 transitions. [2022-11-20 12:24:40,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:24:40,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2022-11-20 12:24:40,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:40,836 INFO L225 Difference]: With dead ends: 4068 [2022-11-20 12:24:40,837 INFO L226 Difference]: Without dead ends: 2713 [2022-11-20 12:24:40,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:24:40,843 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 993 mSDsluCounter, 3355 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:40,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 4540 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:24:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-11-20 12:24:41,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2705. [2022-11-20 12:24:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2153 states have (on average 1.423130515559684) internal successors, (3064), 2185 states have internal predecessors, (3064), 411 states have call successors, (411), 141 states have call predecessors, (411), 140 states have return successors, (440), 410 states have call predecessors, (440), 410 states have call successors, (440) [2022-11-20 12:24:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3915 transitions. [2022-11-20 12:24:41,089 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3915 transitions. Word has length 82 [2022-11-20 12:24:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:41,090 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3915 transitions. [2022-11-20 12:24:41,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 12:24:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3915 transitions. [2022-11-20 12:24:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 12:24:41,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:41,098 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-11-20 12:24:41,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:41,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:41,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash -211321288, now seen corresponding path program 1 times [2022-11-20 12:24:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:41,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741198475] [2022-11-20 12:24:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:41,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:41,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:41,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:41,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:24:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:41,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:24:41,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:24:42,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:42,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741198475] [2022-11-20 12:24:42,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741198475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:42,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:42,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:42,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711171507] [2022-11-20 12:24:42,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:42,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:42,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:42,010 INFO L87 Difference]: Start difference. First operand 2705 states and 3915 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:24:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:42,674 INFO L93 Difference]: Finished difference Result 6693 states and 9691 transitions. [2022-11-20 12:24:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2022-11-20 12:24:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:42,696 INFO L225 Difference]: With dead ends: 6693 [2022-11-20 12:24:42,696 INFO L226 Difference]: Without dead ends: 4012 [2022-11-20 12:24:42,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:42,705 INFO L413 NwaCegarLoop]: 1074 mSDtfsCounter, 521 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:42,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 2016 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:24:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2022-11-20 12:24:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 3999. [2022-11-20 12:24:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3191 states have (on average 1.4302726418050768) internal successors, (4564), 3233 states have internal predecessors, (4564), 595 states have call successors, (595), 213 states have call predecessors, (595), 212 states have return successors, (634), 592 states have call predecessors, (634), 594 states have call successors, (634) [2022-11-20 12:24:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 5793 transitions. [2022-11-20 12:24:43,047 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 5793 transitions. Word has length 140 [2022-11-20 12:24:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:43,048 INFO L495 AbstractCegarLoop]: Abstraction has 3999 states and 5793 transitions. [2022-11-20 12:24:43,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:24:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 5793 transitions. [2022-11-20 12:24:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 12:24:43,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:43,061 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-11-20 12:24:43,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:43,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:43,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 487388931, now seen corresponding path program 1 times [2022-11-20 12:24:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:43,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617013328] [2022-11-20 12:24:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:43,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:43,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:43,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:43,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:24:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:43,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:24:43,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-20 12:24:44,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:44,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:44,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617013328] [2022-11-20 12:24:44,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617013328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:44,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:44,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831520427] [2022-11-20 12:24:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:44,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:44,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:44,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:44,069 INFO L87 Difference]: Start difference. First operand 3999 states and 5793 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:24:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:44,641 INFO L93 Difference]: Finished difference Result 9870 states and 14182 transitions. [2022-11-20 12:24:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:44,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 169 [2022-11-20 12:24:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:44,684 INFO L225 Difference]: With dead ends: 9870 [2022-11-20 12:24:44,684 INFO L226 Difference]: Without dead ends: 5895 [2022-11-20 12:24:44,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:44,702 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 662 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:44,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2466 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2022-11-20 12:24:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 5874. [2022-11-20 12:24:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 4711 states have (on average 1.417321163234982) internal successors, (6677), 4777 states have internal predecessors, (6677), 828 states have call successors, (828), 335 states have call predecessors, (828), 334 states have return successors, (889), 825 states have call predecessors, (889), 827 states have call successors, (889) [2022-11-20 12:24:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 8394 transitions. [2022-11-20 12:24:45,236 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 8394 transitions. Word has length 169 [2022-11-20 12:24:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:45,243 INFO L495 AbstractCegarLoop]: Abstraction has 5874 states and 8394 transitions. [2022-11-20 12:24:45,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:24:45,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 8394 transitions. [2022-11-20 12:24:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-20 12:24:45,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:45,256 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:45,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:45,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:45,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1103652056, now seen corresponding path program 1 times [2022-11-20 12:24:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:45,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120740258] [2022-11-20 12:24:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:45,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:45,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:45,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:24:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:46,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:24:46,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-20 12:24:46,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:46,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:46,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120740258] [2022-11-20 12:24:46,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120740258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:46,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:46,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:46,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646762926] [2022-11-20 12:24:46,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:46,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:46,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:46,311 INFO L87 Difference]: Start difference. First operand 5874 states and 8394 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:24:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:47,326 INFO L93 Difference]: Finished difference Result 14352 states and 20482 transitions. [2022-11-20 12:24:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 163 [2022-11-20 12:24:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:47,372 INFO L225 Difference]: With dead ends: 14352 [2022-11-20 12:24:47,373 INFO L226 Difference]: Without dead ends: 8513 [2022-11-20 12:24:47,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:47,393 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 718 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:47,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 2096 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:24:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8513 states. [2022-11-20 12:24:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8513 to 8500. [2022-11-20 12:24:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8500 states, 6823 states have (on average 1.4103766671552103) internal successors, (9623), 6915 states have internal predecessors, (9623), 1152 states have call successors, (1152), 525 states have call predecessors, (1152), 524 states have return successors, (1241), 1147 states have call predecessors, (1241), 1151 states have call successors, (1241) [2022-11-20 12:24:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8500 states to 8500 states and 12016 transitions. [2022-11-20 12:24:48,185 INFO L78 Accepts]: Start accepts. Automaton has 8500 states and 12016 transitions. Word has length 163 [2022-11-20 12:24:48,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:48,185 INFO L495 AbstractCegarLoop]: Abstraction has 8500 states and 12016 transitions. [2022-11-20 12:24:48,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:24:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8500 states and 12016 transitions. [2022-11-20 12:24:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-20 12:24:48,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:48,202 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:48,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:48,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:48,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:48,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1411925572, now seen corresponding path program 1 times [2022-11-20 12:24:48,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:48,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636328528] [2022-11-20 12:24:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:48,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:48,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:48,429 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:48,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:24:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:49,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:24:49,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-20 12:24:49,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:49,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:49,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636328528] [2022-11-20 12:24:49,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636328528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:49,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:49,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:49,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345631059] [2022-11-20 12:24:49,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:49,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:49,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:49,171 INFO L87 Difference]: Start difference. First operand 8500 states and 12016 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:24:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:49,742 INFO L93 Difference]: Finished difference Result 12797 states and 18226 transitions. [2022-11-20 12:24:49,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2022-11-20 12:24:49,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:49,807 INFO L225 Difference]: With dead ends: 12797 [2022-11-20 12:24:49,808 INFO L226 Difference]: Without dead ends: 8540 [2022-11-20 12:24:49,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:49,826 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 5 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:49,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2020 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2022-11-20 12:24:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 8540. [2022-11-20 12:24:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8540 states, 6853 states have (on average 1.4085801838610827) internal successors, (9653), 6955 states have internal predecessors, (9653), 1152 states have call successors, (1152), 525 states have call predecessors, (1152), 534 states have return successors, (1251), 1147 states have call predecessors, (1251), 1151 states have call successors, (1251) [2022-11-20 12:24:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8540 states to 8540 states and 12056 transitions. [2022-11-20 12:24:50,645 INFO L78 Accepts]: Start accepts. Automaton has 8540 states and 12056 transitions. Word has length 168 [2022-11-20 12:24:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:50,646 INFO L495 AbstractCegarLoop]: Abstraction has 8540 states and 12056 transitions. [2022-11-20 12:24:50,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:24:50,646 INFO L276 IsEmpty]: Start isEmpty. Operand 8540 states and 12056 transitions. [2022-11-20 12:24:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-20 12:24:50,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:50,666 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-11-20 12:24:50,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:50,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:50,886 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:50,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1210427941, now seen corresponding path program 1 times [2022-11-20 12:24:50,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:50,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337194147] [2022-11-20 12:24:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:50,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:50,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:50,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:50,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:24:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:51,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:24:51,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-20 12:24:52,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-20 12:24:56,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:56,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337194147] [2022-11-20 12:24:56,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337194147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:56,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:56,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-11-20 12:24:56,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22360325] [2022-11-20 12:24:56,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:56,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:24:56,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:24:56,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:24:56,306 INFO L87 Difference]: Start difference. First operand 8540 states and 12056 transitions. Second operand has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 7 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:25:02,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:25:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:19,270 INFO L93 Difference]: Finished difference Result 23714 states and 33983 transitions. [2022-11-20 12:25:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:25:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 7 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) Word has length 170 [2022-11-20 12:25:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:19,351 INFO L225 Difference]: With dead ends: 23714 [2022-11-20 12:25:19,352 INFO L226 Difference]: Without dead ends: 15209 [2022-11-20 12:25:19,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:25:19,387 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 5385 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 1576 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5555 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1576 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:19,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5555 Valid, 4075 Invalid, 3947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1576 Valid, 2370 Invalid, 1 Unknown, 0 Unchecked, 21.2s Time] [2022-11-20 12:25:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15209 states. [2022-11-20 12:25:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15209 to 14808. [2022-11-20 12:25:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14808 states, 11818 states have (on average 1.4102216957183957) internal successors, (16666), 12014 states have internal predecessors, (16666), 2076 states have call successors, (2076), 888 states have call predecessors, (2076), 913 states have return successors, (2321), 2063 states have call predecessors, (2321), 2075 states have call successors, (2321) [2022-11-20 12:25:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14808 states to 14808 states and 21063 transitions. [2022-11-20 12:25:20,840 INFO L78 Accepts]: Start accepts. Automaton has 14808 states and 21063 transitions. Word has length 170 [2022-11-20 12:25:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:20,840 INFO L495 AbstractCegarLoop]: Abstraction has 14808 states and 21063 transitions. [2022-11-20 12:25:20,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 7 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:25:20,841 INFO L276 IsEmpty]: Start isEmpty. Operand 14808 states and 21063 transitions. [2022-11-20 12:25:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 12:25:20,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:20,864 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 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] [2022-11-20 12:25:20,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:25:21,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:21,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:21,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:21,081 INFO L85 PathProgramCache]: Analyzing trace with hash 40671684, now seen corresponding path program 1 times [2022-11-20 12:25:21,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:21,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25347104] [2022-11-20 12:25:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:21,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:21,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:21,084 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:21,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:25:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:21,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:25:21,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-20 12:25:21,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:25:21,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:21,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25347104] [2022-11-20 12:25:21,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25347104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:21,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:21,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:25:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280927368] [2022-11-20 12:25:21,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:21,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:25:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:21,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:25:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:25:21,841 INFO L87 Difference]: Start difference. First operand 14808 states and 21063 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:25:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:24,145 INFO L93 Difference]: Finished difference Result 34825 states and 49334 transitions. [2022-11-20 12:25:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:25:24,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 195 [2022-11-20 12:25:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:24,238 INFO L225 Difference]: With dead ends: 34825 [2022-11-20 12:25:24,239 INFO L226 Difference]: Without dead ends: 20052 [2022-11-20 12:25:24,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:25:24,289 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 935 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:24,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 4221 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:25:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20052 states. [2022-11-20 12:25:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20052 to 14832. [2022-11-20 12:25:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14832 states, 11842 states have (on average 1.4093903056916062) internal successors, (16690), 12038 states have internal predecessors, (16690), 2076 states have call successors, (2076), 888 states have call predecessors, (2076), 913 states have return successors, (2321), 2063 states have call predecessors, (2321), 2075 states have call successors, (2321) [2022-11-20 12:25:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14832 states to 14832 states and 21087 transitions. [2022-11-20 12:25:26,061 INFO L78 Accepts]: Start accepts. Automaton has 14832 states and 21087 transitions. Word has length 195 [2022-11-20 12:25:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:26,062 INFO L495 AbstractCegarLoop]: Abstraction has 14832 states and 21087 transitions. [2022-11-20 12:25:26,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:25:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14832 states and 21087 transitions. [2022-11-20 12:25:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-20 12:25:26,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:26,089 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 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 12:25:26,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:26,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:26,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1944018643, now seen corresponding path program 1 times [2022-11-20 12:25:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:26,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545672824] [2022-11-20 12:25:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:26,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:26,317 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:26,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:25:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:27,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:25:27,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-20 12:25:27,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:25:27,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:27,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545672824] [2022-11-20 12:25:27,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545672824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:27,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:27,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:25:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673738996] [2022-11-20 12:25:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:27,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:25:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:25:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:25:27,281 INFO L87 Difference]: Start difference. First operand 14832 states and 21087 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 12:25:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:30,254 INFO L93 Difference]: Finished difference Result 34909 states and 49418 transitions. [2022-11-20 12:25:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:25:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 206 [2022-11-20 12:25:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:30,339 INFO L225 Difference]: With dead ends: 34909 [2022-11-20 12:25:30,340 INFO L226 Difference]: Without dead ends: 20112 [2022-11-20 12:25:30,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:25:30,373 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 1171 mSDsluCounter, 3927 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:30,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 5642 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:25:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20112 states. [2022-11-20 12:25:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20112 to 14844. [2022-11-20 12:25:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14844 states, 11854 states have (on average 1.4089758731229964) internal successors, (16702), 12038 states have internal predecessors, (16702), 2076 states have call successors, (2076), 888 states have call predecessors, (2076), 913 states have return successors, (2321), 2063 states have call predecessors, (2321), 2075 states have call successors, (2321) [2022-11-20 12:25:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14844 states to 14844 states and 21099 transitions. [2022-11-20 12:25:32,142 INFO L78 Accepts]: Start accepts. Automaton has 14844 states and 21099 transitions. Word has length 206 [2022-11-20 12:25:32,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:32,143 INFO L495 AbstractCegarLoop]: Abstraction has 14844 states and 21099 transitions. [2022-11-20 12:25:32,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 12:25:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand 14844 states and 21099 transitions. [2022-11-20 12:25:32,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 12:25:32,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:32,176 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:32,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:32,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:32,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:32,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:32,393 INFO L85 PathProgramCache]: Analyzing trace with hash -651240766, now seen corresponding path program 1 times [2022-11-20 12:25:32,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:32,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150099048] [2022-11-20 12:25:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:32,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:32,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:32,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:25:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:34,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:25:34,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-20 12:25:34,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:25:34,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:34,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150099048] [2022-11-20 12:25:34,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150099048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:34,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:34,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:25:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806039248] [2022-11-20 12:25:34,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:34,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:25:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:25:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:25:34,907 INFO L87 Difference]: Start difference. First operand 14844 states and 21099 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:25:38,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:25:40,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:25:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:41,952 INFO L93 Difference]: Finished difference Result 32451 states and 46433 transitions. [2022-11-20 12:25:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:25:41,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 244 [2022-11-20 12:25:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:42,016 INFO L225 Difference]: With dead ends: 32451 [2022-11-20 12:25:42,016 INFO L226 Difference]: Without dead ends: 17642 [2022-11-20 12:25:42,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:25:42,055 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 1363 mSDsluCounter, 7118 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 196 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 8496 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:42,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 8496 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 54 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 12:25:42,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17642 states. [2022-11-20 12:25:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17642 to 14928. [2022-11-20 12:25:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14928 states, 11926 states have (on average 1.4065067918832803) internal successors, (16774), 12110 states have internal predecessors, (16774), 2076 states have call successors, (2076), 888 states have call predecessors, (2076), 925 states have return successors, (2333), 2075 states have call predecessors, (2333), 2075 states have call successors, (2333) [2022-11-20 12:25:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14928 states to 14928 states and 21183 transitions. [2022-11-20 12:25:43,543 INFO L78 Accepts]: Start accepts. Automaton has 14928 states and 21183 transitions. Word has length 244 [2022-11-20 12:25:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:43,544 INFO L495 AbstractCegarLoop]: Abstraction has 14928 states and 21183 transitions. [2022-11-20 12:25:43,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:25:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 14928 states and 21183 transitions. [2022-11-20 12:25:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-20 12:25:43,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:43,566 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:43,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:43,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:43,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:43,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:43,780 INFO L85 PathProgramCache]: Analyzing trace with hash 727605963, now seen corresponding path program 1 times [2022-11-20 12:25:43,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:43,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221998452] [2022-11-20 12:25:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:43,782 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 12:25:43,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:43,784 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:43,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:25:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:45,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:25:45,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 65 proven. 14 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-20 12:25:48,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-20 12:25:51,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:51,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221998452] [2022-11-20 12:25:51,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221998452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:51,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:25:51,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-20 12:25:51,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722019132] [2022-11-20 12:25:51,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:51,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:25:51,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:51,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:25:51,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:25:51,195 INFO L87 Difference]: Start difference. First operand 14928 states and 21183 transitions. Second operand has 13 states, 13 states have (on average 18.0) internal successors, (234), 11 states have internal predecessors, (234), 6 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (47), 8 states have call predecessors, (47), 6 states have call successors, (47) [2022-11-20 12:25:57,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:57,624 INFO L93 Difference]: Finished difference Result 43502 states and 63869 transitions. [2022-11-20 12:25:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:25:57,625 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.0) internal successors, (234), 11 states have internal predecessors, (234), 6 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (47), 8 states have call predecessors, (47), 6 states have call successors, (47) Word has length 250 [2022-11-20 12:25:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:57,748 INFO L225 Difference]: With dead ends: 43502 [2022-11-20 12:25:57,748 INFO L226 Difference]: Without dead ends: 28609 [2022-11-20 12:25:57,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:25:57,792 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 1707 mSDsluCounter, 16104 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 17794 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:57,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 17794 Invalid, 525 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [261 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 12:25:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28609 states. [2022-11-20 12:26:00,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28609 to 21417. [2022-11-20 12:26:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21417 states, 17455 states have (on average 1.4279576052706962) internal successors, (24925), 17681 states have internal predecessors, (24925), 3035 states have call successors, (3035), 888 states have call predecessors, (3035), 926 states have return successors, (3419), 3041 states have call predecessors, (3419), 3034 states have call successors, (3419) [2022-11-20 12:26:00,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21417 states to 21417 states and 31379 transitions. [2022-11-20 12:26:00,926 INFO L78 Accepts]: Start accepts. Automaton has 21417 states and 31379 transitions. Word has length 250 [2022-11-20 12:26:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:00,927 INFO L495 AbstractCegarLoop]: Abstraction has 21417 states and 31379 transitions. [2022-11-20 12:26:00,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.0) internal successors, (234), 11 states have internal predecessors, (234), 6 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (47), 8 states have call predecessors, (47), 6 states have call successors, (47) [2022-11-20 12:26:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 21417 states and 31379 transitions. [2022-11-20 12:26:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-20 12:26:00,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:00,963 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:01,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:01,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:26:01,180 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1988523213, now seen corresponding path program 1 times [2022-11-20 12:26:01,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:26:01,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940077874] [2022-11-20 12:26:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:01,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:26:01,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:26:01,184 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:26:01,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 12:26:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:03,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:26:03,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-20 12:26:03,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:26:03,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:26:03,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940077874] [2022-11-20 12:26:03,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940077874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:03,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:03,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:26:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899276940] [2022-11-20 12:26:03,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:03,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:26:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:26:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:26:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:26:03,393 INFO L87 Difference]: Start difference. First operand 21417 states and 31379 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 12:26:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:05,465 INFO L93 Difference]: Finished difference Result 42868 states and 62889 transitions. [2022-11-20 12:26:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:26:05,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 250 [2022-11-20 12:26:05,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:05,543 INFO L225 Difference]: With dead ends: 42868 [2022-11-20 12:26:05,543 INFO L226 Difference]: Without dead ends: 21501 [2022-11-20 12:26:05,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:26:05,608 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 2 mSDsluCounter, 3021 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4034 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:05,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4034 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:26:05,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21501 states. [2022-11-20 12:26:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21501 to 21465. [2022-11-20 12:26:08,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21465 states, 17491 states have (on average 1.4270767823452062) internal successors, (24961), 17717 states have internal predecessors, (24961), 3035 states have call successors, (3035), 888 states have call predecessors, (3035), 938 states have return successors, (3437), 3053 states have call predecessors, (3437), 3034 states have call successors, (3437) [2022-11-20 12:26:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21465 states to 21465 states and 31433 transitions. [2022-11-20 12:26:08,807 INFO L78 Accepts]: Start accepts. Automaton has 21465 states and 31433 transitions. Word has length 250 [2022-11-20 12:26:08,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:08,808 INFO L495 AbstractCegarLoop]: Abstraction has 21465 states and 31433 transitions. [2022-11-20 12:26:08,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 12:26:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21465 states and 31433 transitions. [2022-11-20 12:26:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 12:26:08,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:08,835 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:08,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:09,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:26:09,052 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:09,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:09,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1307112932, now seen corresponding path program 1 times [2022-11-20 12:26:09,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:26:09,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067456047] [2022-11-20 12:26:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:09,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:26:09,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:26:09,056 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:26:09,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0431f9c6-3deb-467e-bccc-1dcf54acac9f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:26:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:10,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:26:10,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-11-20 12:26:12,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:26:12,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:26:12,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067456047] [2022-11-20 12:26:12,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067456047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:12,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:12,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:26:12,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764432360] [2022-11-20 12:26:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:12,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:26:12,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:26:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:26:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:26:12,293 INFO L87 Difference]: Start difference. First operand 21465 states and 31433 transitions. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 9 states have internal predecessors, (146), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 12:26:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:20,629 INFO L93 Difference]: Finished difference Result 66426 states and 99855 transitions. [2022-11-20 12:26:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:26:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 9 states have internal predecessors, (146), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) Word has length 257 [2022-11-20 12:26:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:20,762 INFO L225 Difference]: With dead ends: 66426 [2022-11-20 12:26:20,762 INFO L226 Difference]: Without dead ends: 45011 [2022-11-20 12:26:20,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:26:20,824 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1238 mSDsluCounter, 13624 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 15207 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:20,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 15207 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:26:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45011 states.