./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/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_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/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 32bit --witnessprinter.graph.data.programhash f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- 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 12:13:02,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:13:02,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:13:02,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:13:02,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:13:02,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:13:02,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:13:02,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:13:02,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:13:02,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:13:02,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:13:02,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:13:02,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:13:02,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:13:02,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:13:02,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:13:02,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:13:02,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:13:02,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:13:02,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:13:02,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:13:02,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:13:02,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:13:02,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:13:02,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:13:02,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:13:02,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:13:02,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:13:02,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:13:02,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:13:02,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:13:02,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:13:02,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:13:02,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:13:02,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:13:02,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:13:02,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:13:02,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:13:02,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:13:02,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:13:02,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:13:02,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:13:02,657 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:13:02,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:13:02,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:13:02,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:13:02,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:13:02,660 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:13:02,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:13:02,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:13:02,662 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:13:02,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:13:02,663 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:13:02,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:13:02,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:13:02,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:13:02,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:13:02,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:13:02,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:13:02,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:13:02,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:13:02,666 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:13:02,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:13:02,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:13:02,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:13:02,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:13:02,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:13:02,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:13:02,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:13:02,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:13:02,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:13:02,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:13:02,669 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:13:02,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:13:02,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:13:02,670 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_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2022-11-20 12:13:03,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:13:03,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:13:03,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:13:03,081 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:13:03,082 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:13:03,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-20 12:13:06,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:13:07,255 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:13:07,256 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-20 12:13:07,264 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/data/d258aa6ba/bb81becb935f4014a516247aeb93e935/FLAG7ce0b1e33 [2022-11-20 12:13:07,281 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/data/d258aa6ba/bb81becb935f4014a516247aeb93e935 [2022-11-20 12:13:07,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:13:07,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:13:07,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:13:07,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:13:07,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:13:07,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:07" (1/1) ... [2022-11-20 12:13:07,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a9e0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07, skipping insertion in model container [2022-11-20 12:13:07,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:07" (1/1) ... [2022-11-20 12:13:07,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:13:07,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:13:07,547 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_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-20 12:13:07,583 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:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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 12:13:07,590 INFO L158 Benchmark]: Toolchain (without parser) took 303.09ms. Allocated memory is still 172.0MB. Free memory was 124.3MB in the beginning and 114.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:13:07,591 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 71.0MB in the end (delta: 55.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:13:07,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.13ms. Allocated memory is still 172.0MB. Free memory was 124.3MB in the beginning and 114.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:13:07,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 71.0MB in the end (delta: 55.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.13ms. Allocated memory is still 172.0MB. Free memory was 124.3MB in the beginning and 114.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/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_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/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 32bit --witnessprinter.graph.data.programhash f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- 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 12:13:10,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:13:10,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:13:10,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:13:10,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:13:10,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:13:10,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:13:10,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:13:10,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:13:10,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:13:10,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:13:10,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:13:10,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:13:10,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:13:10,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:13:10,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:13:10,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:13:10,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:13:10,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:13:10,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:13:10,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:13:10,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:13:10,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:13:10,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:13:10,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:13:10,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:13:10,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:13:10,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:13:10,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:13:10,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:13:10,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:13:10,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:13:10,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:13:10,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:13:10,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:13:10,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:13:10,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:13:10,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:13:10,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:13:10,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:13:10,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:13:10,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 12:13:10,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:13:10,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:13:10,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:13:10,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:13:10,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:13:10,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:13:10,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:13:10,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:13:10,600 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:13:10,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:13:10,602 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:13:10,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:13:10,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:13:10,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:13:10,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:13:10,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:13:10,604 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:13:10,604 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:13:10,604 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:13:10,604 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:13:10,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:13:10,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:13:10,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:13:10,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:13:10,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:13:10,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:13:10,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:13:10,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:13:10,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:13:10,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:13:10,608 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:13:10,608 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:13:10,608 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:13:10,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:13:10,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:13:10,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:13:10,610 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_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2022-11-20 12:13:11,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:13:11,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:13:11,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:13:11,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:13:11,127 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:13:11,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-20 12:13:15,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:13:15,517 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:13:15,518 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-20 12:13:15,536 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/data/62cfc4bef/593096f1e8e14461933f81c953132c71/FLAG9cfad8c6d [2022-11-20 12:13:15,562 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/data/62cfc4bef/593096f1e8e14461933f81c953132c71 [2022-11-20 12:13:15,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:13:15,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:13:15,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:13:15,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:13:15,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:13:15,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:15" (1/1) ... [2022-11-20 12:13:15,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dfd6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:15, skipping insertion in model container [2022-11-20 12:13:15,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:15" (1/1) ... [2022-11-20 12:13:15,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:13:15,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:13:15,905 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_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-20 12:13:16,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:13:16,034 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:13:16,059 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_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-20 12:13:16,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:13:16,172 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:13:16,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16 WrapperNode [2022-11-20 12:13:16,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:13:16,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:13:16,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:13:16,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:13:16,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,248 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2022-11-20 12:13:16,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:13:16,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:13:16,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:13:16,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:13:16,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,314 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:13:16,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:13:16,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:13:16,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:13:16,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (1/1) ... [2022-11-20 12:13:16,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:13:16,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:13:16,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:13:16,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:13:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:13:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:13:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-20 12:13:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-20 12:13:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:13:16,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:13:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:13:16,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:13:16,503 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:13:16,507 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:13:17,080 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:13:17,095 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:13:17,095 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:13:17,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:17 BoogieIcfgContainer [2022-11-20 12:13:17,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:13:17,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:13:17,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:13:17,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:13:17,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:13:15" (1/3) ... [2022-11-20 12:13:17,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5e060f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:13:17, skipping insertion in model container [2022-11-20 12:13:17,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:16" (2/3) ... [2022-11-20 12:13:17,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5e060f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:13:17, skipping insertion in model container [2022-11-20 12:13:17,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:17" (3/3) ... [2022-11-20 12:13:17,121 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2022-11-20 12:13:17,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:13:17,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:13:17,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:13:17,262 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;@535483f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:13:17,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:13:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 12:13:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 12:13:17,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:17,284 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 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 12:13:17,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1428146956, now seen corresponding path program 1 times [2022-11-20 12:13:17,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:17,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007996098] [2022-11-20 12:13:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:17,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:17,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:17,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:17,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:17,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:13:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:17,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:17,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:17,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007996098] [2022-11-20 12:13:17,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007996098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:17,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:17,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:13:17,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958046936] [2022-11-20 12:13:17,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:17,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:13:17,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:17,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:13:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:13:17,786 INFO L87 Difference]: Start difference. First operand has 52 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:13:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:18,022 INFO L93 Difference]: Finished difference Result 115 states and 181 transitions. [2022-11-20 12:13:18,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:13:18,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-11-20 12:13:18,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:18,046 INFO L225 Difference]: With dead ends: 115 [2022-11-20 12:13:18,046 INFO L226 Difference]: Without dead ends: 60 [2022-11-20 12:13:18,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 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 12:13:18,058 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:18,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 164 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:13:18,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-20 12:13:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-11-20 12:13:18,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 12:13:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2022-11-20 12:13:18,156 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 42 [2022-11-20 12:13:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:18,156 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2022-11-20 12:13:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:13:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2022-11-20 12:13:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 12:13:18,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:18,164 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 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 12:13:18,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 12:13:18,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:18,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash -649725496, now seen corresponding path program 1 times [2022-11-20 12:13:18,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:18,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935372682] [2022-11-20 12:13:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:18,381 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 12:13:18,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:18,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:18,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:18,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:13:18,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:18,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:18,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:18,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935372682] [2022-11-20 12:13:18,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935372682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:18,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:18,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:13:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610986774] [2022-11-20 12:13:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:18,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:13:18,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:13:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:13:18,573 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:13:18,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:18,751 INFO L93 Difference]: Finished difference Result 107 states and 152 transitions. [2022-11-20 12:13:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:13:18,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2022-11-20 12:13:18,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:18,760 INFO L225 Difference]: With dead ends: 107 [2022-11-20 12:13:18,762 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 12:13:18,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 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 12:13:18,766 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:18,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 157 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:13:18,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 12:13:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-11-20 12:13:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 12:13:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2022-11-20 12:13:18,787 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 45 [2022-11-20 12:13:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:18,787 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2022-11-20 12:13:18,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:13:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2022-11-20 12:13:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:13:18,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:18,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 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 12:13:18,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:19,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:19,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:19,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 996548609, now seen corresponding path program 1 times [2022-11-20 12:13:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:19,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277060698] [2022-11-20 12:13:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:19,024 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 12:13:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:19,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:19,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:19,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:13:19,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:19,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:19,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277060698] [2022-11-20 12:13:19,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277060698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:19,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:19,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:13:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686296206] [2022-11-20 12:13:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:19,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:13:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:13:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:13:19,180 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:13:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:19,338 INFO L93 Difference]: Finished difference Result 116 states and 164 transitions. [2022-11-20 12:13:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:13:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-11-20 12:13:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:19,341 INFO L225 Difference]: With dead ends: 116 [2022-11-20 12:13:19,341 INFO L226 Difference]: Without dead ends: 67 [2022-11-20 12:13:19,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 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 12:13:19,344 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:19,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:13:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-20 12:13:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2022-11-20 12:13:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 12:13:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-11-20 12:13:19,357 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2022-11-20 12:13:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:19,358 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-11-20 12:13:19,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:13:19,358 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-11-20 12:13:19,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 12:13:19,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:19,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:19,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:19,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:19,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1306691689, now seen corresponding path program 1 times [2022-11-20 12:13:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:19,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300321316] [2022-11-20 12:13:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:19,582 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 12:13:19,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:19,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:19,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:19,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:13:19,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:19,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:19,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300321316] [2022-11-20 12:13:19,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300321316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:19,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:19,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:13:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751005852] [2022-11-20 12:13:19,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:19,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:13:19,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:13:19,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:13:19,763 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:13:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:19,964 INFO L93 Difference]: Finished difference Result 124 states and 175 transitions. [2022-11-20 12:13:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:13:19,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-11-20 12:13:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:19,967 INFO L225 Difference]: With dead ends: 124 [2022-11-20 12:13:19,967 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 12:13:19,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:13:19,969 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:19,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 198 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:13:19,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 12:13:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2022-11-20 12:13:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 50 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 12:13:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2022-11-20 12:13:19,983 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 47 [2022-11-20 12:13:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:19,983 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2022-11-20 12:13:19,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:13:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2022-11-20 12:13:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:13:19,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:19,985 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-11-20 12:13:20,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:20,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:20,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 164215198, now seen corresponding path program 1 times [2022-11-20 12:13:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:20,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492872298] [2022-11-20 12:13:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:20,202 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 12:13:20,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:20,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:20,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:20,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:13:20,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:20,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:13:20,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:20,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492872298] [2022-11-20 12:13:20,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492872298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:20,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:20,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:13:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28644775] [2022-11-20 12:13:20,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:20,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:13:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:13:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:13:20,683 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:21,091 INFO L93 Difference]: Finished difference Result 145 states and 207 transitions. [2022-11-20 12:13:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:13:21,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2022-11-20 12:13:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:21,096 INFO L225 Difference]: With dead ends: 145 [2022-11-20 12:13:21,096 INFO L226 Difference]: Without dead ends: 94 [2022-11-20 12:13:21,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:13:21,098 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 60 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:21,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 271 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:13:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-20 12:13:21,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2022-11-20 12:13:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 12:13:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2022-11-20 12:13:21,127 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 48 [2022-11-20 12:13:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:21,128 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2022-11-20 12:13:21,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2022-11-20 12:13:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:13:21,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:21,132 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-20 12:13:21,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:21,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:21,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1819650751, now seen corresponding path program 1 times [2022-11-20 12:13:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:21,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72406133] [2022-11-20 12:13:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:21,362 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 12:13:21,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:21,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:21,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:21,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:13:21,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:21,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:13:21,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:21,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72406133] [2022-11-20 12:13:21,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72406133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:21,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:21,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 12:13:21,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024196771] [2022-11-20 12:13:21,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:21,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:13:21,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:21,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:13:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:13:21,786 INFO L87 Difference]: Start difference. First operand 66 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:22,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:22,265 INFO L93 Difference]: Finished difference Result 163 states and 235 transitions. [2022-11-20 12:13:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:13:22,267 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2022-11-20 12:13:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:22,268 INFO L225 Difference]: With dead ends: 163 [2022-11-20 12:13:22,268 INFO L226 Difference]: Without dead ends: 104 [2022-11-20 12:13:22,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:13:22,270 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:22,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 324 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:13:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-20 12:13:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2022-11-20 12:13:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 12:13:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 101 transitions. [2022-11-20 12:13:22,290 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 101 transitions. Word has length 50 [2022-11-20 12:13:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:22,290 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 101 transitions. [2022-11-20 12:13:22,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 101 transitions. [2022-11-20 12:13:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:13:22,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:22,292 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 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 12:13:22,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:22,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:22,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:22,508 INFO L85 PathProgramCache]: Analyzing trace with hash -231695800, now seen corresponding path program 2 times [2022-11-20 12:13:22,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:22,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112623734] [2022-11-20 12:13:22,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:22,509 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 12:13:22,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:22,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:22,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:22,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:13:22,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:22,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:13:22,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 12:13:22,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:22,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:22,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112623734] [2022-11-20 12:13:22,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112623734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:22,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:22,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:13:22,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030973471] [2022-11-20 12:13:22,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:13:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:13:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:13:22,668 INFO L87 Difference]: Start difference. First operand 70 states and 101 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:13:22,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:22,821 INFO L93 Difference]: Finished difference Result 118 states and 168 transitions. [2022-11-20 12:13:22,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:13:22,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2022-11-20 12:13:22,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:22,824 INFO L225 Difference]: With dead ends: 118 [2022-11-20 12:13:22,824 INFO L226 Difference]: Without dead ends: 97 [2022-11-20 12:13:22,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:13:22,825 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 34 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:22,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 330 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:13:22,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-20 12:13:22,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2022-11-20 12:13:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 74 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:13:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2022-11-20 12:13:22,848 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 57 [2022-11-20 12:13:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:22,849 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2022-11-20 12:13:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:13:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2022-11-20 12:13:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:13:22,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:22,851 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 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 12:13:22,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:23,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:23,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash -624722810, now seen corresponding path program 1 times [2022-11-20 12:13:23,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:23,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311049943] [2022-11-20 12:13:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:23,067 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 12:13:23,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:23,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:23,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:23,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:13:23,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:23,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:13:23,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:23,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311049943] [2022-11-20 12:13:23,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311049943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:23,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:23,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 12:13:23,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924413423] [2022-11-20 12:13:23,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:23,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:13:23,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:13:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:13:23,941 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:25,453 INFO L93 Difference]: Finished difference Result 230 states and 329 transitions. [2022-11-20 12:13:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:13:25,455 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-20 12:13:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:25,457 INFO L225 Difference]: With dead ends: 230 [2022-11-20 12:13:25,457 INFO L226 Difference]: Without dead ends: 154 [2022-11-20 12:13:25,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:13:25,459 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 172 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:25,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 574 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:13:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-20 12:13:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 97. [2022-11-20 12:13:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.430232558139535) internal successors, (123), 88 states have internal predecessors, (123), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:13:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 141 transitions. [2022-11-20 12:13:25,507 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 141 transitions. Word has length 57 [2022-11-20 12:13:25,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:25,507 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 141 transitions. [2022-11-20 12:13:25,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 141 transitions. [2022-11-20 12:13:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:13:25,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:25,510 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 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 12:13:25,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:25,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:25,724 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:25,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:25,725 INFO L85 PathProgramCache]: Analyzing trace with hash 539901053, now seen corresponding path program 1 times [2022-11-20 12:13:25,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:25,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458244682] [2022-11-20 12:13:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:25,725 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 12:13:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:25,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:25,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:25,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:13:25,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 24 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:26,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:13:26,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:26,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458244682] [2022-11-20 12:13:26,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458244682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:26,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:26,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 12:13:26,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429445434] [2022-11-20 12:13:26,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:26,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:13:26,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:26,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:13:26,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:13:26,560 INFO L87 Difference]: Start difference. First operand 97 states and 141 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:27,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:27,964 INFO L93 Difference]: Finished difference Result 253 states and 367 transitions. [2022-11-20 12:13:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:13:27,972 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-11-20 12:13:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:27,977 INFO L225 Difference]: With dead ends: 253 [2022-11-20 12:13:27,978 INFO L226 Difference]: Without dead ends: 163 [2022-11-20 12:13:27,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:13:27,984 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 394 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:27,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 616 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:13:27,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-20 12:13:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 107. [2022-11-20 12:13:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 98 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:13:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 158 transitions. [2022-11-20 12:13:28,022 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 158 transitions. Word has length 62 [2022-11-20 12:13:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:28,023 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 158 transitions. [2022-11-20 12:13:28,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 158 transitions. [2022-11-20 12:13:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 12:13:28,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:28,025 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 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 12:13:28,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:28,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:28,239 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:28,240 INFO L85 PathProgramCache]: Analyzing trace with hash 74548550, now seen corresponding path program 2 times [2022-11-20 12:13:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:28,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050890537] [2022-11-20 12:13:28,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:28,240 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 12:13:28,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:28,242 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:28,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:28,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:13:28,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:28,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:13:28,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-20 12:13:28,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:28,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:28,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050890537] [2022-11-20 12:13:28,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050890537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:28,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:28,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:28,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729114461] [2022-11-20 12:13:28,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:28,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:28,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:28,360 INFO L87 Difference]: Start difference. First operand 107 states and 158 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:13:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:28,395 INFO L93 Difference]: Finished difference Result 130 states and 189 transitions. [2022-11-20 12:13:28,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:28,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-11-20 12:13:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:28,402 INFO L225 Difference]: With dead ends: 130 [2022-11-20 12:13:28,403 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 12:13:28,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 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 12:13:28,404 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 13 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:28,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 126 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:13:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 12:13:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-20 12:13:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 96 states have (on average 1.4375) internal successors, (138), 98 states have internal predecessors, (138), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:13:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2022-11-20 12:13:28,429 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 75 [2022-11-20 12:13:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:28,430 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2022-11-20 12:13:28,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:13:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2022-11-20 12:13:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 12:13:28,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:28,439 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 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 12:13:28,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:28,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:28,657 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash 927712034, now seen corresponding path program 1 times [2022-11-20 12:13:28,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:28,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580745886] [2022-11-20 12:13:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:28,659 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 12:13:28,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:28,660 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:28,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:28,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:13:28,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:29,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 163 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:13:30,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:30,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580745886] [2022-11-20 12:13:30,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580745886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:30,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:30,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-20 12:13:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573215397] [2022-11-20 12:13:30,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:30,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:13:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:13:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:13:30,972 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:37,129 INFO L93 Difference]: Finished difference Result 356 states and 513 transitions. [2022-11-20 12:13:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:13:37,131 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-20 12:13:37,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:37,133 INFO L225 Difference]: With dead ends: 356 [2022-11-20 12:13:37,133 INFO L226 Difference]: Without dead ends: 256 [2022-11-20 12:13:37,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=729, Invalid=1433, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 12:13:37,138 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 579 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:37,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1561 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 12:13:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-20 12:13:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 133. [2022-11-20 12:13:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 122 states have (on average 1.4836065573770492) internal successors, (181), 124 states have internal predecessors, (181), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:13:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 199 transitions. [2022-11-20 12:13:37,181 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 199 transitions. Word has length 77 [2022-11-20 12:13:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:37,182 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 199 transitions. [2022-11-20 12:13:37,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 199 transitions. [2022-11-20 12:13:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 12:13:37,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:37,184 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:37,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:37,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:37,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1303025767, now seen corresponding path program 1 times [2022-11-20 12:13:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:37,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386779080] [2022-11-20 12:13:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:37,400 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 12:13:37,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:37,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:37,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:37,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:13:37,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 273 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:38,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 4 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:13:39,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:39,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386779080] [2022-11-20 12:13:39,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386779080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:39,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:39,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-20 12:13:39,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192222151] [2022-11-20 12:13:39,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:39,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 12:13:39,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:39,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 12:13:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:13:39,706 INFO L87 Difference]: Start difference. First operand 133 states and 199 transitions. Second operand has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:43,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:43,150 INFO L93 Difference]: Finished difference Result 357 states and 519 transitions. [2022-11-20 12:13:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 12:13:43,151 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2022-11-20 12:13:43,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:43,153 INFO L225 Difference]: With dead ends: 357 [2022-11-20 12:13:43,153 INFO L226 Difference]: Without dead ends: 231 [2022-11-20 12:13:43,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=991, Invalid=2315, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 12:13:43,156 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1008 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:43,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1594 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:13:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-20 12:13:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 137. [2022-11-20 12:13:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 126 states have (on average 1.492063492063492) internal successors, (188), 128 states have internal predecessors, (188), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:13:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 206 transitions. [2022-11-20 12:13:43,186 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 206 transitions. Word has length 88 [2022-11-20 12:13:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:43,186 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 206 transitions. [2022-11-20 12:13:43,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 206 transitions. [2022-11-20 12:13:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 12:13:43,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:43,189 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 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 12:13:43,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:43,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:43,403 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 939484322, now seen corresponding path program 2 times [2022-11-20 12:13:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:43,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199713049] [2022-11-20 12:13:43,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:43,404 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 12:13:43,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:43,405 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:43,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:43,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:13:43,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:43,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:13:43,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-20 12:13:43,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:43,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:43,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199713049] [2022-11-20 12:13:43,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199713049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:43,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:43,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:13:43,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230075093] [2022-11-20 12:13:43,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:43,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:13:43,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:43,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:13:43,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:13:43,541 INFO L87 Difference]: Start difference. First operand 137 states and 206 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:13:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:43,659 INFO L93 Difference]: Finished difference Result 163 states and 241 transitions. [2022-11-20 12:13:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:13:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 113 [2022-11-20 12:13:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:43,661 INFO L225 Difference]: With dead ends: 163 [2022-11-20 12:13:43,662 INFO L226 Difference]: Without dead ends: 158 [2022-11-20 12:13:43,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:13:43,663 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 65 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:43,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 163 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:13:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-20 12:13:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2022-11-20 12:13:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 131 states have (on average 1.4809160305343512) internal successors, (194), 133 states have internal predecessors, (194), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:13:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 212 transitions. [2022-11-20 12:13:43,700 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 212 transitions. Word has length 113 [2022-11-20 12:13:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:43,700 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 212 transitions. [2022-11-20 12:13:43,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:13:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 212 transitions. [2022-11-20 12:13:43,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 12:13:43,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:43,706 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:43,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:43,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:43,920 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:43,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1722788328, now seen corresponding path program 1 times [2022-11-20 12:13:43,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:43,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093097476] [2022-11-20 12:13:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:43,921 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 12:13:43,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:43,922 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:43,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:44,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:13:44,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 24 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:13:45,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 4 proven. 745 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:13:50,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:50,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093097476] [2022-11-20 12:13:50,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093097476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:50,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:50,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-20 12:13:50,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788317904] [2022-11-20 12:13:50,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:50,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 12:13:50,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:50,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 12:13:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 12:13:50,913 INFO L87 Difference]: Start difference. First operand 142 states and 212 transitions. Second operand has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:14:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:20,230 INFO L93 Difference]: Finished difference Result 600 states and 877 transitions. [2022-11-20 12:14:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-20 12:14:20,232 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-20 12:14:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:20,236 INFO L225 Difference]: With dead ends: 600 [2022-11-20 12:14:20,236 INFO L226 Difference]: Without dead ends: 465 [2022-11-20 12:14:20,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=2901, Invalid=6029, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 12:14:20,240 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 2433 mSDsluCounter, 5042 mSDsCounter, 0 mSdLazyCounter, 4489 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 5251 SdHoareTripleChecker+Invalid, 4834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 4489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:20,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 5251 Invalid, 4834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [345 Valid, 4489 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-20 12:14:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-11-20 12:14:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 210. [2022-11-20 12:14:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 199 states have (on average 1.5427135678391959) internal successors, (307), 201 states have internal predecessors, (307), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:14:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 325 transitions. [2022-11-20 12:14:20,291 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 325 transitions. Word has length 115 [2022-11-20 12:14:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:20,291 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 325 transitions. [2022-11-20 12:14:20,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:14:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 325 transitions. [2022-11-20 12:14:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 12:14:20,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:20,294 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:20,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:20,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:20,508 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash 39463391, now seen corresponding path program 1 times [2022-11-20 12:14:20,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:20,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567742762] [2022-11-20 12:14:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:20,509 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 12:14:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:20,511 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:20,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:20,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:20,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-11-20 12:14:20,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:20,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567742762] [2022-11-20 12:14:20,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567742762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:20,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:20,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:14:20,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249665525] [2022-11-20 12:14:20,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:20,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:20,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:20,676 INFO L87 Difference]: Start difference. First operand 210 states and 325 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:14:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:20,792 INFO L93 Difference]: Finished difference Result 223 states and 339 transitions. [2022-11-20 12:14:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:20,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 120 [2022-11-20 12:14:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:20,795 INFO L225 Difference]: With dead ends: 223 [2022-11-20 12:14:20,796 INFO L226 Difference]: Without dead ends: 217 [2022-11-20 12:14:20,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:14:20,797 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 16 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:20,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 233 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-20 12:14:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-11-20 12:14:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 204 states have (on average 1.5343137254901962) internal successors, (313), 206 states have internal predecessors, (313), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 12:14:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 331 transitions. [2022-11-20 12:14:20,834 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 331 transitions. Word has length 120 [2022-11-20 12:14:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:20,835 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 331 transitions. [2022-11-20 12:14:20,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:14:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 331 transitions. [2022-11-20 12:14:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 12:14:20,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:20,838 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:20,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:21,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash 96721693, now seen corresponding path program 1 times [2022-11-20 12:14:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:21,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344244517] [2022-11-20 12:14:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:21,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:21,056 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:21,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:21,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:14:21,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-11-20 12:14:21,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:21,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:21,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344244517] [2022-11-20 12:14:21,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344244517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:21,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:21,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:14:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309671082] [2022-11-20 12:14:21,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:21,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:14:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:14:21,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:14:21,254 INFO L87 Difference]: Start difference. First operand 215 states and 331 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:14:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:21,342 INFO L93 Difference]: Finished difference Result 221 states and 336 transitions. [2022-11-20 12:14:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:14:21,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 120 [2022-11-20 12:14:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:21,345 INFO L225 Difference]: With dead ends: 221 [2022-11-20 12:14:21,346 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 12:14:21,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:14:21,349 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 2 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:21,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 300 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 12:14:21,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-20 12:14:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 192 states have (on average 1.5520833333333333) internal successors, (298), 195 states have internal predecessors, (298), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 12:14:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 313 transitions. [2022-11-20 12:14:21,393 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 313 transitions. Word has length 120 [2022-11-20 12:14:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:21,394 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 313 transitions. [2022-11-20 12:14:21,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:14:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 313 transitions. [2022-11-20 12:14:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 12:14:21,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:21,403 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 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] [2022-11-20 12:14:21,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:21,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:21,625 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1407344910, now seen corresponding path program 1 times [2022-11-20 12:14:21,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:21,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136053248] [2022-11-20 12:14:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:21,626 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 12:14:21,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:21,628 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:21,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:21,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:14:21,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-20 12:14:21,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:21,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136053248] [2022-11-20 12:14:21,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136053248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:21,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:21,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:14:21,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392368617] [2022-11-20 12:14:21,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:21,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:14:21,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:14:21,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:14:21,812 INFO L87 Difference]: Start difference. First operand 203 states and 313 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:14:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:21,854 INFO L93 Difference]: Finished difference Result 229 states and 346 transitions. [2022-11-20 12:14:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:14:21,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 122 [2022-11-20 12:14:21,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:21,858 INFO L225 Difference]: With dead ends: 229 [2022-11-20 12:14:21,858 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 12:14:21,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 12:14:21,859 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 32 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:21,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 181 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 12:14:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-20 12:14:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 192 states have (on average 1.546875) internal successors, (297), 195 states have internal predecessors, (297), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 12:14:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 312 transitions. [2022-11-20 12:14:21,920 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 312 transitions. Word has length 122 [2022-11-20 12:14:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:21,920 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 312 transitions. [2022-11-20 12:14:21,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:14:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 312 transitions. [2022-11-20 12:14:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 12:14:21,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:21,923 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 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] [2022-11-20 12:14:21,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:22,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:22,138 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash 820538896, now seen corresponding path program 1 times [2022-11-20 12:14:22,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:22,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383614693] [2022-11-20 12:14:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:22,139 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 12:14:22,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:22,140 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:22,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 12:14:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:22,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:14:22,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-20 12:14:22,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-20 12:14:22,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:22,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383614693] [2022-11-20 12:14:22,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383614693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:22,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:22,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-20 12:14:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675899779] [2022-11-20 12:14:22,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:14:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:14:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:14:22,477 INFO L87 Difference]: Start difference. First operand 203 states and 312 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:22,577 INFO L93 Difference]: Finished difference Result 208 states and 316 transitions. [2022-11-20 12:14:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:14:22,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2022-11-20 12:14:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:22,580 INFO L225 Difference]: With dead ends: 208 [2022-11-20 12:14:22,581 INFO L226 Difference]: Without dead ends: 199 [2022-11-20 12:14:22,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:14:22,582 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 18 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:22,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 241 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-20 12:14:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2022-11-20 12:14:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 187 states have (on average 1.5454545454545454) internal successors, (289), 190 states have internal predecessors, (289), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 12:14:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 304 transitions. [2022-11-20 12:14:22,620 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 304 transitions. Word has length 122 [2022-11-20 12:14:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:22,621 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 304 transitions. [2022-11-20 12:14:22,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:22,622 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 304 transitions. [2022-11-20 12:14:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 12:14:22,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:22,624 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 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] [2022-11-20 12:14:22,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:22,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:22,840 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 38983873, now seen corresponding path program 1 times [2022-11-20 12:14:22,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:22,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418820974] [2022-11-20 12:14:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:22,841 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 12:14:22,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:22,843 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:22,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 12:14:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:14:22,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-20 12:14:23,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-20 12:14:23,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:23,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418820974] [2022-11-20 12:14:23,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418820974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:23,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:23,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-20 12:14:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346369889] [2022-11-20 12:14:23,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:23,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:14:23,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:23,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:14:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:14:23,181 INFO L87 Difference]: Start difference. First operand 198 states and 304 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:23,332 INFO L93 Difference]: Finished difference Result 225 states and 337 transitions. [2022-11-20 12:14:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:14:23,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 125 [2022-11-20 12:14:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:23,335 INFO L225 Difference]: With dead ends: 225 [2022-11-20 12:14:23,335 INFO L226 Difference]: Without dead ends: 195 [2022-11-20 12:14:23,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:23,338 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:23,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 381 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:14:23,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-20 12:14:23,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-20 12:14:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 185 states have (on average 1.3027027027027027) internal successors, (241), 187 states have internal predecessors, (241), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 12:14:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 253 transitions. [2022-11-20 12:14:23,371 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 253 transitions. Word has length 125 [2022-11-20 12:14:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:23,372 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 253 transitions. [2022-11-20 12:14:23,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 253 transitions. [2022-11-20 12:14:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 12:14:23,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:23,374 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 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] [2022-11-20 12:14:23,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:23,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:23,589 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash 147310070, now seen corresponding path program 2 times [2022-11-20 12:14:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:23,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526949931] [2022-11-20 12:14:23,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:14:23,590 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 12:14:23,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:23,591 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:23,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 12:14:23,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:14:23,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:23,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:14:23,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-11-20 12:14:23,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:24,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526949931] [2022-11-20 12:14:24,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526949931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [237678139] [2022-11-20 12:14:24,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:14:24,190 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:14:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:14:24,198 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:14:24,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-20 12:14:24,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:14:24,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:24,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:14:24,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-11-20 12:14:24,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:24,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [237678139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:24,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:24,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-20 12:14:24,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78244416] [2022-11-20 12:14:24,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:24,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:14:24,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:24,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:14:24,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:14:24,741 INFO L87 Difference]: Start difference. First operand 195 states and 253 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:24,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:24,892 INFO L93 Difference]: Finished difference Result 196 states and 254 transitions. [2022-11-20 12:14:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:14:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 129 [2022-11-20 12:14:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:24,894 INFO L225 Difference]: With dead ends: 196 [2022-11-20 12:14:24,894 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 12:14:24,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:14:24,896 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:24,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 203 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:14:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 12:14:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 12:14:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:24,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 12:14:24,897 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2022-11-20 12:14:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:24,898 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:14:24,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:14:24,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 12:14:24,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:14:24,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:25,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:25,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:14:25,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 12:14:30,250 INFO L895 garLoopResultBuilder]: At program point L73(lines 35 75) the Hoare annotation is: (not (= |base2flt_#in~m| (_ bv0 32))) [2022-11-20 12:14:30,251 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (let ((.cse0 (not (= |base2flt_#in~e| (_ bv0 32))))) (and (or (not (bvsle base2flt_~e (_ bv4294967168 32))) .cse0) (not (bvult |base2flt_#in~m| (_ bv16777216 32))) (or (not (bvsle (bvadd (_ bv4294967274 32) base2flt_~e) (_ bv4294967168 32))) .cse0))) [2022-11-20 12:14:30,251 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2022-11-20 12:14:30,252 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2022-11-20 12:14:30,252 INFO L902 garLoopResultBuilder]: At program point base2fltENTRY(lines 24 82) the Hoare annotation is: true [2022-11-20 12:14:30,252 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (or (and (= base2flt_~e |base2flt_#in~e|) (= base2flt_~__retres4~0 (_ bv0 32)) (= base2flt_~m (bvshl (bvshl |base2flt_#in~m| (_ bv1 32)) (_ bv1 32)))) (not (= |base2flt_#in~m| (_ bv0 32)))) [2022-11-20 12:14:30,252 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2022-11-20 12:14:30,252 INFO L899 garLoopResultBuilder]: For program point base2fltFINAL(lines 24 82) no Hoare annotation was computed. [2022-11-20 12:14:30,252 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2022-11-20 12:14:30,253 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2022-11-20 12:14:30,253 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2022-11-20 12:14:30,253 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (and (not (= |base2flt_#in~m| (_ bv0 32))) (or (bvult base2flt_~m (_ bv16777216 32)) (not (= |base2flt_#in~m| (_ bv1 32))))) [2022-11-20 12:14:30,253 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2022-11-20 12:14:30,253 INFO L895 garLoopResultBuilder]: At program point L217(lines 147 219) the Hoare annotation is: (or (= (bvadd |ULTIMATE.start_main_~sb~0#1| (_ bv1 32)) (_ bv0 32)) (and (= (_ bv0 32) |ULTIMATE.start_mulflt_#res#1|) (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|)) (and (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32)) (not (bvult |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~zero~0#1|)) (= |ULTIMATE.start_main_~sb~0#1| (_ bv1 32)))) [2022-11-20 12:14:30,254 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 250) no Hoare annotation was computed. [2022-11-20 12:14:30,254 INFO L899 garLoopResultBuilder]: For program point L246-2(lines 246 250) no Hoare annotation was computed. [2022-11-20 12:14:30,254 INFO L902 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: true [2022-11-20 12:14:30,254 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2022-11-20 12:14:30,254 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 12:14:30,254 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 12:14:30,255 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 12:14:30,255 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2022-11-20 12:14:30,255 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 252) no Hoare annotation was computed. [2022-11-20 12:14:30,255 INFO L899 garLoopResultBuilder]: For program point L243-2(lines 243 252) no Hoare annotation was computed. [2022-11-20 12:14:30,255 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|) [2022-11-20 12:14:30,256 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2022-11-20 12:14:30,256 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 264) no Hoare annotation was computed. [2022-11-20 12:14:30,256 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2022-11-20 12:14:30,256 INFO L899 garLoopResultBuilder]: For program point L260-2(lines 260 264) no Hoare annotation was computed. [2022-11-20 12:14:30,256 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 12:14:30,257 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2022-11-20 12:14:30,257 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2022-11-20 12:14:30,257 INFO L899 garLoopResultBuilder]: For program point L256-1(lines 256 272) no Hoare annotation was computed. [2022-11-20 12:14:30,257 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|) [2022-11-20 12:14:30,257 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2022-11-20 12:14:30,257 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2022-11-20 12:14:30,258 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2022-11-20 12:14:30,258 INFO L899 garLoopResultBuilder]: For program point L257(lines 257 266) no Hoare annotation was computed. [2022-11-20 12:14:30,258 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (and (not (bvult |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~zero~0#1|)) (= |ULTIMATE.start_main_~tmp___0~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~tmp___1~0#1| (_ bv0 32))) [2022-11-20 12:14:30,259 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 164) no Hoare annotation was computed. [2022-11-20 12:14:30,259 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2022-11-20 12:14:30,261 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (or (= (bvadd |ULTIMATE.start_main_~sb~0#1| (_ bv1 32)) (_ bv0 32)) (and (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32)) (not (bvult |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~zero~0#1|)) (= |ULTIMATE.start_main_~sb~0#1| (_ bv1 32))) (and (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (not (bvult (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|)))) [2022-11-20 12:14:30,261 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2022-11-20 12:14:30,261 INFO L902 garLoopResultBuilder]: At program point L274(lines 220 276) the Hoare annotation is: true [2022-11-20 12:14:30,261 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|) [2022-11-20 12:14:30,262 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2022-11-20 12:14:30,262 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-20 12:14:30,262 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-11-20 12:14:30,262 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2022-11-20 12:14:30,262 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2022-11-20 12:14:30,263 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2022-11-20 12:14:30,263 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-20 12:14:30,270 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:30,273 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:14:30,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:14:30 BoogieIcfgContainer [2022-11-20 12:14:30,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:14:30,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:14:30,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:14:30,309 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:14:30,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:17" (3/4) ... [2022-11-20 12:14:30,313 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:14:30,322 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-11-20 12:14:30,322 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 12:14:30,333 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 12:14:30,333 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 12:14:30,334 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:14:30,334 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:14:30,401 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32) [2022-11-20 12:14:30,401 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) && (~bvult32(m, 16777216bv32) || !(\old(m) == 1bv32)) [2022-11-20 12:14:30,401 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && !~bvult32(\old(m), 16777216bv32)) && (!~bvsle32(~bvadd64(4294967274bv32, e), 4294967168bv32) || !(\old(e) == 0bv32)) [2022-11-20 12:14:30,402 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) [2022-11-20 12:14:30,403 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~bvadd64(sb, 1bv32) == 0bv32 || ((0bv32 == \result && __retres10 == 0bv32) && 0bv32 == zero)) || ((tmp == 1bv32 && !~bvult32(b, zero)) && sb == 1bv32) [2022-11-20 12:14:30,478 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:14:30,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:14:30,479 INFO L158 Benchmark]: Toolchain (without parser) took 74906.66ms. Allocated memory was 67.1MB in the beginning and 195.0MB in the end (delta: 127.9MB). Free memory was 37.1MB in the beginning and 164.3MB in the end (delta: -127.3MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2022-11-20 12:14:30,480 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 67.1MB. Free memory was 44.1MB in the beginning and 44.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:14:30,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.16ms. Allocated memory is still 67.1MB. Free memory was 36.8MB in the beginning and 45.0MB in the end (delta: -8.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-11-20 12:14:30,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.54ms. Allocated memory is still 67.1MB. Free memory was 45.0MB in the beginning and 43.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:14:30,485 INFO L158 Benchmark]: Boogie Preprocessor took 70.07ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 41.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:14:30,486 INFO L158 Benchmark]: RCFGBuilder took 777.36ms. Allocated memory is still 67.1MB. Free memory was 41.6MB in the beginning and 26.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:14:30,487 INFO L158 Benchmark]: TraceAbstraction took 73194.81ms. Allocated memory was 92.3MB in the beginning and 161.5MB in the end (delta: 69.2MB). Free memory was 70.1MB in the beginning and 82.7MB in the end (delta: -12.6MB). Peak memory consumption was 102.7MB. Max. memory is 16.1GB. [2022-11-20 12:14:30,488 INFO L158 Benchmark]: Witness Printer took 169.86ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 82.7MB in the beginning and 164.3MB in the end (delta: -81.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:14:30,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 67.1MB. Free memory was 44.1MB in the beginning and 44.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.16ms. Allocated memory is still 67.1MB. Free memory was 36.8MB in the beginning and 45.0MB in the end (delta: -8.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.54ms. Allocated memory is still 67.1MB. Free memory was 45.0MB in the beginning and 43.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 70.07ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 41.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 777.36ms. Allocated memory is still 67.1MB. Free memory was 41.6MB in the beginning and 26.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 73194.81ms. Allocated memory was 92.3MB in the beginning and 161.5MB in the end (delta: 69.2MB). Free memory was 70.1MB in the beginning and 82.7MB in the end (delta: -12.6MB). Peak memory consumption was 102.7MB. Max. memory is 16.1GB. * Witness Printer took 169.86ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 82.7MB in the beginning and 164.3MB in the end (delta: -81.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.0s, OverallIterations: 20, TraceHistogramMax: 24, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 44.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5006 SdHoareTripleChecker+Valid, 18.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5006 mSDsluCounter, 13018 SdHoareTripleChecker+Invalid, 15.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11600 mSDsCounter, 804 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8190 IncrementalHoareTripleChecker+Invalid, 8994 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 804 mSolverCounterUnsat, 1418 mSDtfsCounter, 8190 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2783 GetRequests, 2442 SyntacticMatches, 1 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 34.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=15, InterpolantAutomatonStates: 294, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 20 MinimizatonAttempts, 722 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 168 PreInvPairs, 665 NumberOfFragments, 137 HoareAnnotationTreeSize, 168 FomulaSimplifications, 16737 FormulaSimplificationTreeSizeReduction, 3.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 11610 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 1789 NumberOfCodeBlocks, 1609 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2503 ConstructedInterpolants, 0 QuantifiedInterpolants, 7076 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2948 ConjunctsInSsa, 158 ConjunctsInUnsatCore, 30 InterpolantComputations, 10 PerfectInterpolantSequences, 9198/11778 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (~bvadd64(sb, 1bv32) == 0bv32 || ((tmp == 1bv32 && !~bvult32(b, zero)) && sb == 1bv32)) || (__retres10 == 0bv32 && !~bvult32(0bv32, zero)) - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: (~bvadd64(sb, 1bv32) == 0bv32 || ((0bv32 == \result && __retres10 == 0bv32) && 0bv32 == zero)) || ((tmp == 1bv32 && !~bvult32(b, zero)) && sb == 1bv32) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) && (~bvult32(m, 16777216bv32) || !(\old(m) == 1bv32)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && !~bvult32(\old(m), 16777216bv32)) && (!~bvsle32(~bvadd64(4294967274bv32, e), 4294967168bv32) || !(\old(e) == 0bv32)) RESULT: Ultimate proved your program to be correct! [2022-11-20 12:14:30,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dddb6-3b85-4d86-91f1-6ea4fbf41a93/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE