./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/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_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/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_7e921cac-88db-4922-9832-770f46abd196/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 1cccbd170603672b3f74a5336cc730c4afa341837cef68e5226707c3c82e670c --- 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 12:21:37,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:21:37,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:21:37,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:21:37,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:21:37,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:21:37,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:21:37,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:21:37,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:21:37,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:21:37,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:21:37,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:21:37,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:21:37,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:21:37,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:21:37,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:21:37,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:21:37,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:21:37,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:21:37,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:21:37,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:21:37,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:21:37,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:21:37,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:21:37,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:21:37,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:21:37,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:21:37,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:21:37,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:21:37,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:21:37,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:21:37,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:21:37,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:21:37,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:21:37,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:21:37,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:21:37,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:21:37,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:21:37,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:21:37,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:21:37,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:21:37,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:21:37,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:21:37,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:21:37,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:21:37,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:21:37,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:21:37,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:21:37,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:21:37,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:21:37,446 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:21:37,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:21:37,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:21:37,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:21:37,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:21:37,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:21:37,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:21:37,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:21:37,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:21:37,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:21:37,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:21:37,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:21:37,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:21:37,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:21:37,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:21:37,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:21:37,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:21:37,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:21:37,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:21:37,455 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:21:37,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:21:37,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:21:37,456 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_7e921cac-88db-4922-9832-770f46abd196/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cccbd170603672b3f74a5336cc730c4afa341837cef68e5226707c3c82e670c [2022-11-20 12:21:37,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:21:37,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:21:37,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:21:37,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:21:37,938 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:21:37,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2022-11-20 12:21:41,675 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:21:42,385 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:21:42,386 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2022-11-20 12:21:42,448 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/data/05e369592/e798e9a9ef204789900279808285501f/FLAGbd9e492b1 [2022-11-20 12:21:42,473 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/data/05e369592/e798e9a9ef204789900279808285501f [2022-11-20 12:21:42,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:21:42,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:21:42,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:21:42,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:21:42,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:21:42,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:21:42" (1/1) ... [2022-11-20 12:21:42,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57bac85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:42, skipping insertion in model container [2022-11-20 12:21:42,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:21:42" (1/1) ... [2022-11-20 12:21:42,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:21:42,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:21:43,451 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 12:21:43,465 INFO L158 Benchmark]: Toolchain (without parser) took 984.54ms. Allocated memory is still 148.9MB. Free memory was 107.9MB in the beginning and 94.5MB in the end (delta: 13.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-20 12:21:43,465 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:21:43,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 979.55ms. Allocated memory is still 148.9MB. Free memory was 107.2MB in the beginning and 94.5MB in the end (delta: 12.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-20 12:21:43,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 979.55ms. Allocated memory is still 148.9MB. Free memory was 107.2MB in the beginning and 94.5MB in the end (delta: 12.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/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_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/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_7e921cac-88db-4922-9832-770f46abd196/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 1cccbd170603672b3f74a5336cc730c4afa341837cef68e5226707c3c82e670c --- 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 12:21:46,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:21:46,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:21:46,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:21:46,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:21:46,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:21:46,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:21:46,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:21:46,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:21:46,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:21:46,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:21:46,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:21:46,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:21:46,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:21:46,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:21:46,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:21:46,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:21:46,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:21:46,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:21:46,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:21:46,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:21:46,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:21:46,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:21:46,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:21:46,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:21:46,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:21:46,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:21:46,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:21:46,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:21:46,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:21:46,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:21:46,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:21:46,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:21:46,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:21:46,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:21:46,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:21:46,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:21:46,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:21:46,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:21:46,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:21:46,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:21:46,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:21:46,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:21:46,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:21:46,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:21:46,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:21:46,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:21:46,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:21:46,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:21:46,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:21:46,243 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:21:46,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:21:46,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:21:46,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:21:46,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:21:46,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:21:46,246 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:21:46,246 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:21:46,247 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:21:46,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:21:46,247 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:21:46,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:21:46,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:21:46,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:21:46,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:21:46,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:21:46,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:21:46,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:21:46,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:21:46,250 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:21:46,250 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:21:46,250 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:21:46,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:21:46,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:21:46,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:21:46,252 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_7e921cac-88db-4922-9832-770f46abd196/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cccbd170603672b3f74a5336cc730c4afa341837cef68e5226707c3c82e670c [2022-11-20 12:21:46,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:21:46,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:21:46,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:21:46,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:21:46,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:21:46,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2022-11-20 12:21:50,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:21:51,406 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:21:51,407 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2022-11-20 12:21:51,457 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/data/7eda67f4b/4f9a257cd57f4150b904f07075689946/FLAGe3e2d7c96 [2022-11-20 12:21:51,476 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/data/7eda67f4b/4f9a257cd57f4150b904f07075689946 [2022-11-20 12:21:51,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:21:51,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:21:51,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:21:51,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:21:51,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:21:51,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:21:51" (1/1) ... [2022-11-20 12:21:51,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5097fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:51, skipping insertion in model container [2022-11-20 12:21:51,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:21:51" (1/1) ... [2022-11-20 12:21:51,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:21:51,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:21:52,662 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_7e921cac-88db-4922-9832-770f46abd196/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i[158694,158707] [2022-11-20 12:21:53,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:21:53,254 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:21:53,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:21:53,546 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_7e921cac-88db-4922-9832-770f46abd196/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i[158694,158707] [2022-11-20 12:21:53,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:21:53,772 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:21:54,012 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_7e921cac-88db-4922-9832-770f46abd196/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i[158694,158707] [2022-11-20 12:21:54,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:21:54,296 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:21:54,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54 WrapperNode [2022-11-20 12:21:54,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:21:54,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:21:54,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:21:54,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:21:54,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,534 INFO L138 Inliner]: procedures = 194, calls = 601, calls flagged for inlining = 90, calls inlined = 85, statements flattened = 1916 [2022-11-20 12:21:54,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:21:54,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:21:54,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:21:54,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:21:54,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,749 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:21:54,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:21:54,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:21:54,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:21:54,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (1/1) ... [2022-11-20 12:21:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:21:54,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:54,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:21:54,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:21:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2022-11-20 12:21:54,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2022-11-20 12:21:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:21:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:21:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-20 12:21:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:21:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:21:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:21:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:21:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:21:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:21:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:21:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2022-11-20 12:21:54,912 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2022-11-20 12:21:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-20 12:21:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-20 12:21:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2022-11-20 12:21:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2022-11-20 12:21:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:21:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:21:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 12:21:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 12:21:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:21:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:21:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 12:21:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 12:21:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2022-11-20 12:21:54,916 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2022-11-20 12:21:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2022-11-20 12:21:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2022-11-20 12:21:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-20 12:21:54,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-20 12:21:54,919 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2022-11-20 12:21:54,919 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2022-11-20 12:21:54,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:21:54,919 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 12:21:54,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 12:21:54,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:21:54,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-20 12:21:54,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-20 12:21:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:21:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:21:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:21:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:21:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:21:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-20 12:21:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-20 12:21:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:21:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:21:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:21:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 12:21:54,925 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 12:21:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 12:21:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 12:21:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 12:21:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 12:21:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 12:21:54,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 12:21:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-20 12:21:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-20 12:21:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 12:21:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 12:21:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 12:21:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 12:21:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:21:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:21:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-20 12:21:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-20 12:21:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 12:21:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 12:21:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:21:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:21:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2022-11-20 12:21:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2022-11-20 12:21:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:21:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 12:21:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:21:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 12:21:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:21:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:21:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:21:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 12:21:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 12:21:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-11-20 12:21:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-11-20 12:21:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:21:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2022-11-20 12:21:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2022-11-20 12:21:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:21:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 12:21:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 12:21:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 12:21:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-20 12:21:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-20 12:21:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2022-11-20 12:21:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2022-11-20 12:21:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2022-11-20 12:21:54,940 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2022-11-20 12:21:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 12:21:54,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 12:21:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 12:21:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 12:21:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2022-11-20 12:21:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2022-11-20 12:21:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 12:21:54,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 12:21:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 12:21:54,942 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 12:21:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 12:21:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-20 12:21:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-20 12:21:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:21:54,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:21:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-20 12:21:54,948 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-20 12:21:55,669 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:21:55,673 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:21:57,544 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:22:07,866 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:22:07,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:22:07,892 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:22:07,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:07 BoogieIcfgContainer [2022-11-20 12:22:07,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:22:07,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:22:07,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:22:07,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:22:07,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:21:51" (1/3) ... [2022-11-20 12:22:07,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e1fd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:22:07, skipping insertion in model container [2022-11-20 12:22:07,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:54" (2/3) ... [2022-11-20 12:22:07,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e1fd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:22:07, skipping insertion in model container [2022-11-20 12:22:07,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:07" (3/3) ... [2022-11-20 12:22:07,915 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2022-11-20 12:22:07,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:22:07,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:22:08,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:22:08,073 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;@5a9c5627, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:22:08,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:22:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 725 states, 529 states have (on average 1.3705103969754253) internal successors, (725), 545 states have internal predecessors, (725), 152 states have call successors, (152), 43 states have call predecessors, (152), 42 states have return successors, (147), 145 states have call predecessors, (147), 147 states have call successors, (147) [2022-11-20 12:22:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 12:22:08,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:08,113 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:08,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -652156897, now seen corresponding path program 1 times [2022-11-20 12:22:08,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:08,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792631982] [2022-11-20 12:22:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:08,140 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 12:22:08,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:08,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:08,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:08,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:22:08,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 12:22:09,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:09,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:09,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792631982] [2022-11-20 12:22:09,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792631982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:09,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:09,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890460536] [2022-11-20 12:22:09,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:09,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:09,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:09,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:09,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:09,075 INFO L87 Difference]: Start difference. First operand has 725 states, 529 states have (on average 1.3705103969754253) internal successors, (725), 545 states have internal predecessors, (725), 152 states have call successors, (152), 43 states have call predecessors, (152), 42 states have return successors, (147), 145 states have call predecessors, (147), 147 states have call successors, (147) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:22:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:09,683 INFO L93 Difference]: Finished difference Result 2104 states and 3075 transitions. [2022-11-20 12:22:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-11-20 12:22:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:09,730 INFO L225 Difference]: With dead ends: 2104 [2022-11-20 12:22:09,731 INFO L226 Difference]: Without dead ends: 1366 [2022-11-20 12:22:09,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 12:22:09,759 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 936 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:09,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 2147 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:22:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-20 12:22:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2022-11-20 12:22:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1004 states have (on average 1.3525896414342629) internal successors, (1358), 1022 states have internal predecessors, (1358), 279 states have call successors, (279), 83 states have call predecessors, (279), 82 states have return successors, (278), 274 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-20 12:22:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1915 transitions. [2022-11-20 12:22:09,947 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1915 transitions. Word has length 53 [2022-11-20 12:22:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:09,948 INFO L495 AbstractCegarLoop]: Abstraction has 1366 states and 1915 transitions. [2022-11-20 12:22:09,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:22:09,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1915 transitions. [2022-11-20 12:22:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:22:09,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:09,955 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:09,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:10,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:10,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:10,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1522870577, now seen corresponding path program 1 times [2022-11-20 12:22:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:10,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137997753] [2022-11-20 12:22:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:10,174 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 12:22:10,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:10,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:10,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:10,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:22:10,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 12:22:11,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:11,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:11,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137997753] [2022-11-20 12:22:11,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137997753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:11,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:11,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:22:11,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133428777] [2022-11-20 12:22:11,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:11,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:11,327 INFO L87 Difference]: Start difference. First operand 1366 states and 1915 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:22:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:11,537 INFO L93 Difference]: Finished difference Result 2718 states and 3811 transitions. [2022-11-20 12:22:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-11-20 12:22:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:11,554 INFO L225 Difference]: With dead ends: 2718 [2022-11-20 12:22:11,554 INFO L226 Difference]: Without dead ends: 1366 [2022-11-20 12:22:11,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 12:22:11,564 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 969 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:11,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 990 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:22:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-20 12:22:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2022-11-20 12:22:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1004 states have (on average 1.3515936254980079) internal successors, (1357), 1022 states have internal predecessors, (1357), 279 states have call successors, (279), 83 states have call predecessors, (279), 82 states have return successors, (278), 274 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-20 12:22:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1914 transitions. [2022-11-20 12:22:11,723 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1914 transitions. Word has length 55 [2022-11-20 12:22:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:11,724 INFO L495 AbstractCegarLoop]: Abstraction has 1366 states and 1914 transitions. [2022-11-20 12:22:11,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:22:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1914 transitions. [2022-11-20 12:22:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:22:11,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:11,738 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:11,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:11,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:11,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash 511753327, now seen corresponding path program 1 times [2022-11-20 12:22:11,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:11,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951552933] [2022-11-20 12:22:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:11,975 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 12:22:11,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:11,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:12,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:22:12,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 12:22:13,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:13,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:13,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951552933] [2022-11-20 12:22:13,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951552933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:13,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:13,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393986607] [2022-11-20 12:22:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:13,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:22:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:22:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:22:13,198 INFO L87 Difference]: Start difference. First operand 1366 states and 1914 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:22:14,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:14,350 INFO L93 Difference]: Finished difference Result 3037 states and 4316 transitions. [2022-11-20 12:22:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:22:14,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-11-20 12:22:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:14,363 INFO L225 Difference]: With dead ends: 3037 [2022-11-20 12:22:14,363 INFO L226 Difference]: Without dead ends: 1685 [2022-11-20 12:22:14,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 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 12:22:14,370 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1494 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:14,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 2337 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:22:14,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2022-11-20 12:22:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1366. [2022-11-20 12:22:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1004 states have (on average 1.350597609561753) internal successors, (1356), 1022 states have internal predecessors, (1356), 279 states have call successors, (279), 83 states have call predecessors, (279), 82 states have return successors, (278), 274 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-20 12:22:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1913 transitions. [2022-11-20 12:22:14,578 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1913 transitions. Word has length 55 [2022-11-20 12:22:14,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:14,581 INFO L495 AbstractCegarLoop]: Abstraction has 1366 states and 1913 transitions. [2022-11-20 12:22:14,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:22:14,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1913 transitions. [2022-11-20 12:22:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:22:14,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:14,587 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:14,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:14,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:14,811 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:14,812 INFO L85 PathProgramCache]: Analyzing trace with hash -574719062, now seen corresponding path program 1 times [2022-11-20 12:22:14,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:14,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451371213] [2022-11-20 12:22:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:14,813 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 12:22:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:14,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:14,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:15,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:22:15,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 12:22:16,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:16,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:16,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451371213] [2022-11-20 12:22:16,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451371213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:16,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:16,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:22:16,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608942984] [2022-11-20 12:22:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:16,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:22:16,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:22:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:16,057 INFO L87 Difference]: Start difference. First operand 1366 states and 1913 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:22:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:16,750 INFO L93 Difference]: Finished difference Result 4067 states and 5777 transitions. [2022-11-20 12:22:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:22:16,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-20 12:22:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:16,769 INFO L225 Difference]: With dead ends: 4067 [2022-11-20 12:22:16,769 INFO L226 Difference]: Without dead ends: 2691 [2022-11-20 12:22:16,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:22:16,777 INFO L413 NwaCegarLoop]: 1202 mSDtfsCounter, 961 mSDsluCounter, 3399 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:16,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 4601 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:22:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2022-11-20 12:22:17,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2683. [2022-11-20 12:22:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 1971 states have (on average 1.352105530187722) internal successors, (2665), 2007 states have internal predecessors, (2665), 547 states have call successors, (547), 165 states have call predecessors, (547), 164 states have return successors, (602), 538 states have call predecessors, (602), 546 states have call successors, (602) [2022-11-20 12:22:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 3814 transitions. [2022-11-20 12:22:17,090 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 3814 transitions. Word has length 66 [2022-11-20 12:22:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:17,091 INFO L495 AbstractCegarLoop]: Abstraction has 2683 states and 3814 transitions. [2022-11-20 12:22:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:22:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 3814 transitions. [2022-11-20 12:22:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 12:22:17,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:17,102 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-20 12:22:17,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:17,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:17,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash -483665306, now seen corresponding path program 1 times [2022-11-20 12:22:17,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:17,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463321697] [2022-11-20 12:22:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:17,329 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 12:22:17,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:17,334 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:17,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:18,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:22:18,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 12:22:18,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:18,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:18,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463321697] [2022-11-20 12:22:18,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463321697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:18,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:18,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524244753] [2022-11-20 12:22:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:18,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:18,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:18,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:18,387 INFO L87 Difference]: Start difference. First operand 2683 states and 3814 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 12:22:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:19,121 INFO L93 Difference]: Finished difference Result 7535 states and 10639 transitions. [2022-11-20 12:22:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:19,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-11-20 12:22:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:19,151 INFO L225 Difference]: With dead ends: 7535 [2022-11-20 12:22:19,151 INFO L226 Difference]: Without dead ends: 4866 [2022-11-20 12:22:19,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 12:22:19,163 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 802 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:19,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2074 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:22:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2022-11-20 12:22:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4857. [2022-11-20 12:22:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 3598 states have (on average 1.3521400778210118) internal successors, (4865), 3659 states have internal predecessors, (4865), 946 states have call successors, (946), 313 states have call predecessors, (946), 312 states have return successors, (1021), 932 states have call predecessors, (1021), 945 states have call successors, (1021) [2022-11-20 12:22:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 6832 transitions. [2022-11-20 12:22:19,795 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 6832 transitions. Word has length 100 [2022-11-20 12:22:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:19,796 INFO L495 AbstractCegarLoop]: Abstraction has 4857 states and 6832 transitions. [2022-11-20 12:22:19,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 12:22:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 6832 transitions. [2022-11-20 12:22:19,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 12:22:19,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:19,805 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-20 12:22:19,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:20,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:20,031 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:20,032 INFO L85 PathProgramCache]: Analyzing trace with hash 702475904, now seen corresponding path program 1 times [2022-11-20 12:22:20,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:20,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855344788] [2022-11-20 12:22:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:20,033 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 12:22:20,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:20,043 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:20,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:20,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:22:20,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 12:22:20,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:20,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:20,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855344788] [2022-11-20 12:22:20,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855344788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:20,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:20,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:20,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907637330] [2022-11-20 12:22:20,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:20,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:20,960 INFO L87 Difference]: Start difference. First operand 4857 states and 6832 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:22:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:21,992 INFO L93 Difference]: Finished difference Result 13141 states and 18360 transitions. [2022-11-20 12:22:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:21,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-11-20 12:22:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:22,046 INFO L225 Difference]: With dead ends: 13141 [2022-11-20 12:22:22,047 INFO L226 Difference]: Without dead ends: 8298 [2022-11-20 12:22:22,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 12:22:22,068 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 751 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:22,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 2064 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:22:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2022-11-20 12:22:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 8269. [2022-11-20 12:22:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8269 states, 6146 states have (on average 1.3472177025707777) internal successors, (8280), 6259 states have internal predecessors, (8280), 1548 states have call successors, (1548), 575 states have call predecessors, (1548), 574 states have return successors, (1683), 1510 states have call predecessors, (1683), 1547 states have call successors, (1683) [2022-11-20 12:22:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8269 states to 8269 states and 11511 transitions. [2022-11-20 12:22:23,150 INFO L78 Accepts]: Start accepts. Automaton has 8269 states and 11511 transitions. Word has length 115 [2022-11-20 12:22:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:23,150 INFO L495 AbstractCegarLoop]: Abstraction has 8269 states and 11511 transitions. [2022-11-20 12:22:23,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:22:23,151 INFO L276 IsEmpty]: Start isEmpty. Operand 8269 states and 11511 transitions. [2022-11-20 12:22:23,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 12:22:23,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:23,163 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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 12:22:23,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:22:23,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:23,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash 909980863, now seen corresponding path program 1 times [2022-11-20 12:22:23,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:23,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069324555] [2022-11-20 12:22:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:23,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:23,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:23,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:23,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:24,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:22:24,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 12:22:24,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:24,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:24,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069324555] [2022-11-20 12:22:24,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069324555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:24,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:24,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:24,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803088656] [2022-11-20 12:22:24,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:24,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:24,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:24,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:24,433 INFO L87 Difference]: Start difference. First operand 8269 states and 11511 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 12:22:25,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:25,876 INFO L93 Difference]: Finished difference Result 20707 states and 28624 transitions. [2022-11-20 12:22:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:25,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-11-20 12:22:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:25,971 INFO L225 Difference]: With dead ends: 20707 [2022-11-20 12:22:25,980 INFO L226 Difference]: Without dead ends: 12452 [2022-11-20 12:22:26,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 12:22:26,020 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 659 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:26,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 2361 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:22:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2022-11-20 12:22:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 12431. [2022-11-20 12:22:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12431 states, 9166 states have (on average 1.3326423739908357) internal successors, (12215), 9340 states have internal predecessors, (12215), 2322 states have call successors, (2322), 943 states have call predecessors, (2322), 942 states have return successors, (2559), 2267 states have call predecessors, (2559), 2321 states have call successors, (2559) [2022-11-20 12:22:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12431 states to 12431 states and 17096 transitions. [2022-11-20 12:22:27,527 INFO L78 Accepts]: Start accepts. Automaton has 12431 states and 17096 transitions. Word has length 129 [2022-11-20 12:22:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:27,527 INFO L495 AbstractCegarLoop]: Abstraction has 12431 states and 17096 transitions. [2022-11-20 12:22:27,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 12:22:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 12431 states and 17096 transitions. [2022-11-20 12:22:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 12:22:27,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:27,544 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:27,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:27,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:27,768 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1335780634, now seen corresponding path program 1 times [2022-11-20 12:22:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:27,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326727957] [2022-11-20 12:22:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:27,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:27,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:27,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:28,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:22:28,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 12:22:29,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:29,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:29,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326727957] [2022-11-20 12:22:29,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326727957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:29,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:29,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:22:29,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868066186] [2022-11-20 12:22:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:29,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:22:29,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:29,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:22:29,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:22:29,062 INFO L87 Difference]: Start difference. First operand 12431 states and 17096 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:22:30,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:30,272 INFO L93 Difference]: Finished difference Result 24891 states and 34239 transitions. [2022-11-20 12:22:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:22:30,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2022-11-20 12:22:30,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:30,341 INFO L225 Difference]: With dead ends: 24891 [2022-11-20 12:22:30,341 INFO L226 Difference]: Without dead ends: 12461 [2022-11-20 12:22:30,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:30,384 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 12 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:30,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2985 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:22:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2022-11-20 12:22:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12434. [2022-11-20 12:22:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12434 states, 9169 states have (on average 1.331661031737376) internal successors, (12210), 9343 states have internal predecessors, (12210), 2322 states have call successors, (2322), 943 states have call predecessors, (2322), 942 states have return successors, (2559), 2267 states have call predecessors, (2559), 2321 states have call successors, (2559) [2022-11-20 12:22:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12434 states to 12434 states and 17091 transitions. [2022-11-20 12:22:32,160 INFO L78 Accepts]: Start accepts. Automaton has 12434 states and 17091 transitions. Word has length 134 [2022-11-20 12:22:32,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:32,161 INFO L495 AbstractCegarLoop]: Abstraction has 12434 states and 17091 transitions. [2022-11-20 12:22:32,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:22:32,161 INFO L276 IsEmpty]: Start isEmpty. Operand 12434 states and 17091 transitions. [2022-11-20 12:22:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 12:22:32,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:32,172 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:32,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:32,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:32,386 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:32,386 INFO L85 PathProgramCache]: Analyzing trace with hash -577413990, now seen corresponding path program 1 times [2022-11-20 12:22:32,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:32,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059023519] [2022-11-20 12:22:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:32,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:32,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:32,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:32,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:33,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:22:33,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 12:22:33,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:33,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:33,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059023519] [2022-11-20 12:22:33,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059023519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:33,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:33,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:22:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006827210] [2022-11-20 12:22:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:33,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:22:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:22:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:22:33,818 INFO L87 Difference]: Start difference. First operand 12434 states and 17091 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 12:22:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:35,948 INFO L93 Difference]: Finished difference Result 25103 states and 34486 transitions. [2022-11-20 12:22:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:22:35,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-11-20 12:22:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:36,013 INFO L225 Difference]: With dead ends: 25103 [2022-11-20 12:22:36,013 INFO L226 Difference]: Without dead ends: 12644 [2022-11-20 12:22:36,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:22:36,047 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 104 mSDsluCounter, 6972 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 7976 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:36,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 7976 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:22:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12644 states. [2022-11-20 12:22:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12644 to 12508. [2022-11-20 12:22:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12508 states, 9215 states have (on average 1.3297883884970156) internal successors, (12254), 9402 states have internal predecessors, (12254), 2322 states have call successors, (2322), 943 states have call predecessors, (2322), 970 states have return successors, (2617), 2282 states have call predecessors, (2617), 2321 states have call successors, (2617) [2022-11-20 12:22:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12508 states to 12508 states and 17193 transitions. [2022-11-20 12:22:37,167 INFO L78 Accepts]: Start accepts. Automaton has 12508 states and 17193 transitions. Word has length 135 [2022-11-20 12:22:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:37,168 INFO L495 AbstractCegarLoop]: Abstraction has 12508 states and 17193 transitions. [2022-11-20 12:22:37,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 12:22:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 12508 states and 17193 transitions. [2022-11-20 12:22:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-20 12:22:37,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:37,181 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:37,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:37,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:37,405 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:37,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:37,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1268985959, now seen corresponding path program 1 times [2022-11-20 12:22:37,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:37,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945805251] [2022-11-20 12:22:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:37,407 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 12:22:37,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:37,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:37,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:38,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:22:38,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 12:22:38,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:38,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:38,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945805251] [2022-11-20 12:22:38,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945805251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:38,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:38,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281506706] [2022-11-20 12:22:38,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:38,667 INFO L87 Difference]: Start difference. First operand 12508 states and 17193 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:22:40,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:40,224 INFO L93 Difference]: Finished difference Result 32157 states and 44160 transitions. [2022-11-20 12:22:40,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:40,224 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), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2022-11-20 12:22:40,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:40,346 INFO L225 Difference]: With dead ends: 32157 [2022-11-20 12:22:40,346 INFO L226 Difference]: Without dead ends: 19674 [2022-11-20 12:22:40,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 12:22:40,393 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 915 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:40,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2188 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:22:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19674 states. [2022-11-20 12:22:42,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19674 to 19654. [2022-11-20 12:22:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19654 states, 14492 states have (on average 1.3190725917747723) internal successors, (19116), 14799 states have internal predecessors, (19116), 3611 states have call successors, (3611), 1509 states have call predecessors, (3611), 1550 states have return successors, (4043), 3545 states have call predecessors, (4043), 3610 states have call successors, (4043) [2022-11-20 12:22:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19654 states to 19654 states and 26770 transitions. [2022-11-20 12:22:42,324 INFO L78 Accepts]: Start accepts. Automaton has 19654 states and 26770 transitions. Word has length 141 [2022-11-20 12:22:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:42,324 INFO L495 AbstractCegarLoop]: Abstraction has 19654 states and 26770 transitions. [2022-11-20 12:22:42,325 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), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:22:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 19654 states and 26770 transitions. [2022-11-20 12:22:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-20 12:22:42,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:42,336 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:42,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:42,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:42,547 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash -40817979, now seen corresponding path program 1 times [2022-11-20 12:22:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:42,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904830744] [2022-11-20 12:22:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:42,549 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 12:22:42,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:42,559 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:42,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:43,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:22:43,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-20 12:22:43,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:43,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904830744] [2022-11-20 12:22:43,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904830744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:43,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:43,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876414887] [2022-11-20 12:22:43,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:43,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:43,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:43,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:43,487 INFO L87 Difference]: Start difference. First operand 19654 states and 26770 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 12:22:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:44,549 INFO L93 Difference]: Finished difference Result 29741 states and 40947 transitions. [2022-11-20 12:22:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-20 12:22:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:44,654 INFO L225 Difference]: With dead ends: 29741 [2022-11-20 12:22:44,654 INFO L226 Difference]: Without dead ends: 19742 [2022-11-20 12:22:44,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 12:22:44,692 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 5 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1984 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 12:22:44,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1984 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:22:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19742 states. [2022-11-20 12:22:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19742 to 19742. [2022-11-20 12:22:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19742 states, 14558 states have (on average 1.317626047534002) internal successors, (19182), 14887 states have internal predecessors, (19182), 3611 states have call successors, (3611), 1509 states have call predecessors, (3611), 1572 states have return successors, (4085), 3545 states have call predecessors, (4085), 3610 states have call successors, (4085) [2022-11-20 12:22:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19742 states to 19742 states and 26878 transitions. [2022-11-20 12:22:46,647 INFO L78 Accepts]: Start accepts. Automaton has 19742 states and 26878 transitions. Word has length 141 [2022-11-20 12:22:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:46,648 INFO L495 AbstractCegarLoop]: Abstraction has 19742 states and 26878 transitions. [2022-11-20 12:22:46,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 12:22:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand 19742 states and 26878 transitions. [2022-11-20 12:22:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 12:22:46,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:46,664 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:46,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:46,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:46,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:46,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1463983034, now seen corresponding path program 1 times [2022-11-20 12:22:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:46,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554578613] [2022-11-20 12:22:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:46,886 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 12:22:46,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:46,887 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:46,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:47,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:22:47,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 12:22:48,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:48,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:48,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554578613] [2022-11-20 12:22:48,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554578613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:48,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:48,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:22:48,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477377756] [2022-11-20 12:22:48,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:48,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:22:48,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:22:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:22:48,294 INFO L87 Difference]: Start difference. First operand 19742 states and 26878 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 12:22:54,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:23:06,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:23:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:08,115 INFO L93 Difference]: Finished difference Result 41495 states and 57078 transitions. [2022-11-20 12:23:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:23:08,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 143 [2022-11-20 12:23:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:08,215 INFO L225 Difference]: With dead ends: 41495 [2022-11-20 12:23:08,216 INFO L226 Difference]: Without dead ends: 21778 [2022-11-20 12:23:08,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:23:08,265 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1330 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 503 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:08,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 2569 Invalid, 2813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [503 Valid, 2309 Invalid, 1 Unknown, 0 Unchecked, 17.6s Time] [2022-11-20 12:23:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21778 states. [2022-11-20 12:23:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21778 to 20888. [2022-11-20 12:23:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20888 states, 15286 states have (on average 1.303414889441319) internal successors, (19924), 15645 states have internal predecessors, (19924), 3835 states have call successors, (3835), 1589 states have call predecessors, (3835), 1766 states have return successors, (4457), 3853 states have call predecessors, (4457), 3834 states have call successors, (4457) [2022-11-20 12:23:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20888 states to 20888 states and 28216 transitions. [2022-11-20 12:23:10,069 INFO L78 Accepts]: Start accepts. Automaton has 20888 states and 28216 transitions. Word has length 143 [2022-11-20 12:23:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:10,069 INFO L495 AbstractCegarLoop]: Abstraction has 20888 states and 28216 transitions. [2022-11-20 12:23:10,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 12:23:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 20888 states and 28216 transitions. [2022-11-20 12:23:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-20 12:23:10,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:10,081 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:10,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:10,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:10,295 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:10,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:10,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1898056481, now seen corresponding path program 1 times [2022-11-20 12:23:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:10,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135032794] [2022-11-20 12:23:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:10,297 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 12:23:10,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:10,298 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:10,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:11,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:23:11,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-20 12:23:11,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:11,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:11,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135032794] [2022-11-20 12:23:11,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135032794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:11,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:11,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:23:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820274910] [2022-11-20 12:23:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:11,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:23:11,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:11,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:23:11,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:23:11,242 INFO L87 Difference]: Start difference. First operand 20888 states and 28216 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:23:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:12,809 INFO L93 Difference]: Finished difference Result 41993 states and 57256 transitions. [2022-11-20 12:23:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:23:12,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-11-20 12:23:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:12,912 INFO L225 Difference]: With dead ends: 41993 [2022-11-20 12:23:12,912 INFO L226 Difference]: Without dead ends: 21130 [2022-11-20 12:23:12,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:23:12,969 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 2 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3965 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:12,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3965 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:23:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21130 states. [2022-11-20 12:23:14,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21130 to 21048. [2022-11-20 12:23:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21048 states, 15406 states have (on average 1.3010515383616772) internal successors, (20044), 15765 states have internal predecessors, (20044), 3835 states have call successors, (3835), 1589 states have call predecessors, (3835), 1806 states have return successors, (4529), 3893 states have call predecessors, (4529), 3834 states have call successors, (4529) [2022-11-20 12:23:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21048 states to 21048 states and 28408 transitions. [2022-11-20 12:23:14,627 INFO L78 Accepts]: Start accepts. Automaton has 21048 states and 28408 transitions. Word has length 150 [2022-11-20 12:23:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:14,628 INFO L495 AbstractCegarLoop]: Abstraction has 21048 states and 28408 transitions. [2022-11-20 12:23:14,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:23:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 21048 states and 28408 transitions. [2022-11-20 12:23:14,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 12:23:14,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:14,641 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 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] [2022-11-20 12:23:14,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:14,857 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1998585079, now seen corresponding path program 1 times [2022-11-20 12:23:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:14,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315502794] [2022-11-20 12:23:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:14,859 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 12:23:14,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:14,860 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:14,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:15,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 12:23:15,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 12:23:17,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:17,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:17,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315502794] [2022-11-20 12:23:17,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315502794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:17,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:17,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 12:23:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31012610] [2022-11-20 12:23:17,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:23:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:23:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:23:17,096 INFO L87 Difference]: Start difference. First operand 21048 states and 28408 transitions. Second operand has 22 states, 21 states have (on average 4.428571428571429) internal successors, (93), 16 states have internal predecessors, (93), 4 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 12:23:21,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:21,270 INFO L93 Difference]: Finished difference Result 42680 states and 57969 transitions. [2022-11-20 12:23:21,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:23:21,271 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.428571428571429) internal successors, (93), 16 states have internal predecessors, (93), 4 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 4 states have call successors, (18) Word has length 154 [2022-11-20 12:23:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:21,343 INFO L225 Difference]: With dead ends: 42680 [2022-11-20 12:23:21,343 INFO L226 Difference]: Without dead ends: 21657 [2022-11-20 12:23:21,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:23:21,393 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 837 mSDsluCounter, 19671 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 20712 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:21,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 20712 Invalid, 617 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [160 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:23:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21657 states. [2022-11-20 12:23:22,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21657 to 21272. [2022-11-20 12:23:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21272 states, 15566 states have (on average 1.293331620197867) internal successors, (20132), 15925 states have internal predecessors, (20132), 3835 states have call successors, (3835), 1589 states have call predecessors, (3835), 1870 states have return successors, (4641), 3957 states have call predecessors, (4641), 3834 states have call successors, (4641) [2022-11-20 12:23:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21272 states to 21272 states and 28608 transitions. [2022-11-20 12:23:22,787 INFO L78 Accepts]: Start accepts. Automaton has 21272 states and 28608 transitions. Word has length 154 [2022-11-20 12:23:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:22,787 INFO L495 AbstractCegarLoop]: Abstraction has 21272 states and 28608 transitions. [2022-11-20 12:23:22,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.428571428571429) internal successors, (93), 16 states have internal predecessors, (93), 4 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 12:23:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 21272 states and 28608 transitions. [2022-11-20 12:23:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-20 12:23:22,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:22,797 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 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] [2022-11-20 12:23:22,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:23,021 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2065690622, now seen corresponding path program 1 times [2022-11-20 12:23:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:23,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111412319] [2022-11-20 12:23:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:23,022 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 12:23:23,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:23,023 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:23,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 12:23:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:23,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 12:23:23,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 12:23:25,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:25,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:25,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111412319] [2022-11-20 12:23:25,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111412319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:25,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:25,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 12:23:25,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085025572] [2022-11-20 12:23:25,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:25,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:23:25,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:25,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:23:25,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:23:25,044 INFO L87 Difference]: Start difference. First operand 21272 states and 28608 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 16 states have internal predecessors, (98), 4 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 12:23:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:28,999 INFO L93 Difference]: Finished difference Result 42968 states and 57937 transitions. [2022-11-20 12:23:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:23:29,000 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 16 states have internal predecessors, (98), 4 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 4 states have call successors, (18) Word has length 159 [2022-11-20 12:23:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:29,061 INFO L225 Difference]: With dead ends: 42968 [2022-11-20 12:23:29,062 INFO L226 Difference]: Without dead ends: 21721 [2022-11-20 12:23:29,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:23:29,097 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 839 mSDsluCounter, 18546 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 19582 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:29,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 19582 Invalid, 596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [159 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 12:23:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21721 states. [2022-11-20 12:23:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21721 to 21336. [2022-11-20 12:23:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21336 states, 15630 states have (on average 1.290083173384517) internal successors, (20164), 15957 states have internal predecessors, (20164), 3835 states have call successors, (3835), 1589 states have call predecessors, (3835), 1870 states have return successors, (4641), 3989 states have call predecessors, (4641), 3834 states have call successors, (4641) [2022-11-20 12:23:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21336 states to 21336 states and 28640 transitions. [2022-11-20 12:23:30,864 INFO L78 Accepts]: Start accepts. Automaton has 21336 states and 28640 transitions. Word has length 159 [2022-11-20 12:23:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:30,864 INFO L495 AbstractCegarLoop]: Abstraction has 21336 states and 28640 transitions. [2022-11-20 12:23:30,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 16 states have internal predecessors, (98), 4 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 12:23:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 21336 states and 28640 transitions. [2022-11-20 12:23:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-20 12:23:30,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:30,874 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 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] [2022-11-20 12:23:30,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-20 12:23:31,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:31,099 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1299504488, now seen corresponding path program 1 times [2022-11-20 12:23:31,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:31,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008093255] [2022-11-20 12:23:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:31,101 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 12:23:31,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:31,102 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:31,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 12:23:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:23:32,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-20 12:23:32,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:32,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:32,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008093255] [2022-11-20 12:23:32,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008093255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:32,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:32,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:23:32,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253384181] [2022-11-20 12:23:32,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:32,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:23:32,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:23:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:23:32,226 INFO L87 Difference]: Start difference. First operand 21336 states and 28640 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 12:23:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:35,001 INFO L93 Difference]: Finished difference Result 51877 states and 69354 transitions. [2022-11-20 12:23:35,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:23:35,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 177 [2022-11-20 12:23:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:35,087 INFO L225 Difference]: With dead ends: 51877 [2022-11-20 12:23:35,087 INFO L226 Difference]: Without dead ends: 30557 [2022-11-20 12:23:35,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 12:23:35,125 INFO L413 NwaCegarLoop]: 1437 mSDtfsCounter, 807 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:35,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 2304 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:23:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30557 states. [2022-11-20 12:23:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30557 to 30525. [2022-11-20 12:23:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30525 states, 22413 states have (on average 1.2811761031544193) internal successors, (28715), 22865 states have internal predecessors, (28715), 5316 states have call successors, (5316), 2381 states have call predecessors, (5316), 2795 states have return successors, (6457), 5554 states have call predecessors, (6457), 5315 states have call successors, (6457) [2022-11-20 12:23:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30525 states to 30525 states and 40488 transitions. [2022-11-20 12:23:37,944 INFO L78 Accepts]: Start accepts. Automaton has 30525 states and 40488 transitions. Word has length 177 [2022-11-20 12:23:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:37,944 INFO L495 AbstractCegarLoop]: Abstraction has 30525 states and 40488 transitions. [2022-11-20 12:23:37,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 12:23:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 30525 states and 40488 transitions. [2022-11-20 12:23:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-20 12:23:37,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:37,961 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:37,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:38,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:38,162 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash -254824711, now seen corresponding path program 1 times [2022-11-20 12:23:38,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:38,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9609236] [2022-11-20 12:23:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:38,164 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 12:23:38,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:38,166 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:38,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e921cac-88db-4922-9832-770f46abd196/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 12:23:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:39,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:23:39,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-20 12:23:39,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:39,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9609236] [2022-11-20 12:23:39,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9609236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:39,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:39,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:23:39,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170522937] [2022-11-20 12:23:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:39,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:23:39,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:39,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:23:39,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:39,347 INFO L87 Difference]: Start difference. First operand 30525 states and 40488 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)