./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/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_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:12:29,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:12:29,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:12:29,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:12:29,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:12:29,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:12:29,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:12:29,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:12:29,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:12:29,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:12:29,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:12:29,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:12:29,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:12:29,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:12:29,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:12:29,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:12:29,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:12:29,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:12:29,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:12:29,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:12:29,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:12:29,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:12:29,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:12:29,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:12:29,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:12:29,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:12:29,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:12:29,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:12:29,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:12:29,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:12:29,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:12:29,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:12:29,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:12:29,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:12:29,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:12:29,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:12:29,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:12:29,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:12:29,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:12:29,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:12:29,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:12:29,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:12:29,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:12:29,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:12:29,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:12:29,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:12:29,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:12:29,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:12:29,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:12:29,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:12:29,731 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:12:29,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:12:29,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:12:29,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:12:29,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:12:29,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:12:29,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:12:29,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:12:29,732 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:12:29,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:12:29,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:12:29,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:12:29,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:12:29,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:29,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:12:29,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:12:29,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:12:29,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:12:29,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:12:29,735 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:12:29,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:12:29,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:12:29,735 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_423212bf-caba-4b65-b1b3-0341758d9428/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-11-20 11:12:29,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:12:29,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:12:30,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:12:30,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:12:30,008 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:12:30,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-11-20 11:12:33,146 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:12:33,713 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:12:33,713 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-11-20 11:12:33,743 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/data/d9868ffa2/5a745141cdbc4aa0901a4fd7c9126ee0/FLAG80474cf04 [2022-11-20 11:12:33,761 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/data/d9868ffa2/5a745141cdbc4aa0901a4fd7c9126ee0 [2022-11-20 11:12:33,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:12:33,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:12:33,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:33,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:12:33,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:12:33,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:33" (1/1) ... [2022-11-20 11:12:33,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3864e68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:33, skipping insertion in model container [2022-11-20 11:12:33,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:33" (1/1) ... [2022-11-20 11:12:33,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:12:33,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:34,710 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.abstractShiftLeft(BitabsTranslation.java:148) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:187) 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.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:177) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:675) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1469) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) 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.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 11:12:34,725 INFO L158 Benchmark]: Toolchain (without parser) took 954.18ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 69.5MB in the end (delta: 36.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-20 11:12:34,726 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory is still 58.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:12:34,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 950.33ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 69.5MB in the end (delta: 36.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-20 11:12:34,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory is still 58.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 950.33ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 69.5MB in the end (delta: 36.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/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_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:12:36,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:12:36,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:12:36,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:12:36,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:12:36,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:12:36,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:12:36,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:12:36,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:12:36,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:12:36,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:12:36,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:12:36,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:12:36,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:12:36,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:12:36,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:12:36,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:12:36,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:12:36,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:12:36,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:12:36,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:12:36,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:12:36,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:12:36,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:12:36,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:12:36,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:12:36,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:12:36,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:12:36,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:12:36,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:12:36,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:12:36,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:12:36,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:12:36,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:12:36,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:12:36,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:12:36,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:12:36,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:12:36,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:12:36,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:12:36,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:12:36,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 11:12:37,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:12:37,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:12:37,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:12:37,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:12:37,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:12:37,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:12:37,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:12:37,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:12:37,017 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:12:37,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:12:37,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:12:37,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:12:37,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:12:37,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:12:37,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:12:37,019 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:12:37,019 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:12:37,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:12:37,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:12:37,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:12:37,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:12:37,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:12:37,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:12:37,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:37,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:12:37,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:12:37,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:12:37,023 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:12:37,023 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:12:37,023 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:12:37,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:12:37,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:12:37,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:12:37,024 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_423212bf-caba-4b65-b1b3-0341758d9428/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-11-20 11:12:37,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:12:37,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:12:37,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:12:37,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:12:37,425 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:12:37,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-11-20 11:12:40,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:12:41,113 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:12:41,113 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-11-20 11:12:41,145 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/data/0df6046b5/a57bee6e1b59485cbb613d20f6248d92/FLAGfc63b8420 [2022-11-20 11:12:41,169 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/data/0df6046b5/a57bee6e1b59485cbb613d20f6248d92 [2022-11-20 11:12:41,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:12:41,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:12:41,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:41,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:12:41,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:12:41,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:41" (1/1) ... [2022-11-20 11:12:41,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217e6e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:41, skipping insertion in model container [2022-11-20 11:12:41,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:41" (1/1) ... [2022-11-20 11:12:41,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:12:41,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:42,656 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_423212bf-caba-4b65-b1b3-0341758d9428/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-11-20 11:12:42,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:42,710 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:12:42,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:43,072 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_423212bf-caba-4b65-b1b3-0341758d9428/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-11-20 11:12:43,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:43,106 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:12:43,461 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_423212bf-caba-4b65-b1b3-0341758d9428/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-11-20 11:12:43,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:43,538 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:12:43,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43 WrapperNode [2022-11-20 11:12:43,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:43,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:43,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:12:43,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:12:43,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:43,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:43,818 INFO L138 Inliner]: procedures = 195, calls = 1552, calls flagged for inlining = 91, calls inlined = 88, statements flattened = 4091 [2022-11-20 11:12:43,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:43,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:12:43,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:12:43,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:12:43,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:43,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:43,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:43,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:43,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:43,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:44,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:44,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:44,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:12:44,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:12:44,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:12:44,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:12:44,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2022-11-20 11:12:44,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:44,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:44,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:12:44,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:12:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_sw [2022-11-20 11:12:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_sw [2022-11-20 11:12:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 11:12:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-20 11:12:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-20 11:12:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2022-11-20 11:12:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2022-11-20 11:12:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 11:12:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:12:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 11:12:44,192 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 11:12:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_input [2022-11-20 11:12:44,192 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_input [2022-11-20 11:12:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:12:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:12:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-20 11:12:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 11:12:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 11:12:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_vol [2022-11-20 11:12:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_vol [2022-11-20 11:12:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:12:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:12:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv2 [2022-11-20 11:12:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv2 [2022-11-20 11:12:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv1 [2022-11-20 11:12:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv1 [2022-11-20 11:12:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-11-20 11:12:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-11-20 11:12:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-20 11:12:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-20 11:12:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:12:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure mixer_slot_clear [2022-11-20 11:12:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure mixer_slot_clear [2022-11-20 11:12:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_ioctl1 [2022-11-20 11:12:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_ioctl1 [2022-11-20 11:12:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-20 11:12:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-20 11:12:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:12:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 11:12:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 11:12:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-11-20 11:12:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-11-20 11:12:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 11:12:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 11:12:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 11:12:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:12:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:12:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:12:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_test [2022-11-20 11:12:44,197 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_test [2022-11-20 11:12:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-11-20 11:12:44,197 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-11-20 11:12:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 11:12:44,198 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 11:12:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:12:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 11:12:44,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 11:12:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 11:12:44,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 11:12:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_open [2022-11-20 11:12:44,198 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_open [2022-11-20 11:12:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-20 11:12:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-20 11:12:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_file_remove [2022-11-20 11:12:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_file_remove [2022-11-20 11:12:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_find_numid [2022-11-20 11:12:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_find_numid [2022-11-20 11:12:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv [2022-11-20 11:12:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv [2022-11-20 11:12:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:12:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:12:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_test_id [2022-11-20 11:12:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_test_id [2022-11-20 11:12:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 11:12:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 11:12:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 11:12:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure snd_info_free_entry [2022-11-20 11:12:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_info_free_entry [2022-11-20 11:12:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:12:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:12:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:12:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:12:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:12:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:12:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_release [2022-11-20 11:12:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_release [2022-11-20 11:12:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:12:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-11-20 11:12:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-20 11:12:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-20 11:12:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:12:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:12:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 11:12:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2022-11-20 11:12:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2022-11-20 11:12:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 11:12:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 11:12:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-11-20 11:12:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-11-20 11:12:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-11-20 11:12:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-11-20 11:12:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_sw [2022-11-20 11:12:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_sw [2022-11-20 11:12:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure snd_oss_info_register [2022-11-20 11:12:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_oss_info_register [2022-11-20 11:12:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_vol [2022-11-20 11:12:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_vol [2022-11-20 11:12:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_notify_handler [2022-11-20 11:12:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_notify_handler [2022-11-20 11:12:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-11-20 11:12:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-11-20 11:12:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:12:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:12:44,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:12:44,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:13:18,315 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:13:18,332 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:13:18,332 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:13:18,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:18 BoogieIcfgContainer [2022-11-20 11:13:18,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:13:18,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:13:18,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:13:18,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:13:18,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:41" (1/3) ... [2022-11-20 11:13:18,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7dfd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:18, skipping insertion in model container [2022-11-20 11:13:18,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (2/3) ... [2022-11-20 11:13:18,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7dfd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:18, skipping insertion in model container [2022-11-20 11:13:18,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:18" (3/3) ... [2022-11-20 11:13:18,345 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-11-20 11:13:18,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:13:18,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:13:18,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:13:18,476 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;@5d6d9206, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:13:18,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:13:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 1183 states, 881 states have (on average 1.4642451759364359) internal successors, (1290), 898 states have internal predecessors, (1290), 254 states have call successors, (254), 46 states have call predecessors, (254), 46 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) [2022-11-20 11:13:18,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:13:18,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:18,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:18,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1005268226, now seen corresponding path program 1 times [2022-11-20 11:13:18,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:18,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294381635] [2022-11-20 11:13:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:18,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:18,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:18,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:18,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 11:13:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:19,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:19,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:19,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:13:19,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:19,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294381635] [2022-11-20 11:13:19,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294381635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:19,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:19,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:19,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447875162] [2022-11-20 11:13:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:19,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:19,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:19,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:19,345 INFO L87 Difference]: Start difference. First operand has 1183 states, 881 states have (on average 1.4642451759364359) internal successors, (1290), 898 states have internal predecessors, (1290), 254 states have call successors, (254), 46 states have call predecessors, (254), 46 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:13:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:19,695 INFO L93 Difference]: Finished difference Result 2306 states and 3626 transitions. [2022-11-20 11:13:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:19,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-20 11:13:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:19,725 INFO L225 Difference]: With dead ends: 2306 [2022-11-20 11:13:19,726 INFO L226 Difference]: Without dead ends: 1124 [2022-11-20 11:13:19,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:19,744 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 5 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:19,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3373 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:13:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-20 11:13:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1119. [2022-11-20 11:13:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 828 states have (on average 1.4480676328502415) internal successors, (1199), 841 states have internal predecessors, (1199), 246 states have call successors, (246), 45 states have call predecessors, (246), 44 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-11-20 11:13:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1688 transitions. [2022-11-20 11:13:19,877 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1688 transitions. Word has length 14 [2022-11-20 11:13:19,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:19,877 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1688 transitions. [2022-11-20 11:13:19,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:13:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1688 transitions. [2022-11-20 11:13:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:13:19,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:19,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:19,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -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 11:13:20,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:20,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1748134867, now seen corresponding path program 1 times [2022-11-20 11:13:20,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:20,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739341240] [2022-11-20 11:13:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:20,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:20,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:20,099 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:20,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 11:13:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:20,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:13:20,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:20,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:21,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:21,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739341240] [2022-11-20 11:13:21,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739341240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:21,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:21,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 11:13:21,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429169590] [2022-11-20 11:13:21,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:21,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:13:21,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:21,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:13:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:13:21,287 INFO L87 Difference]: Start difference. First operand 1119 states and 1688 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:13:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:21,985 INFO L93 Difference]: Finished difference Result 2244 states and 3387 transitions. [2022-11-20 11:13:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:13:21,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-20 11:13:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:21,995 INFO L225 Difference]: With dead ends: 2244 [2022-11-20 11:13:21,995 INFO L226 Difference]: Without dead ends: 1137 [2022-11-20 11:13:22,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:22,002 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 22 mSDsluCounter, 6723 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8412 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:22,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8412 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:13:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-11-20 11:13:22,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2022-11-20 11:13:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 843 states have (on average 1.4436536180308421) internal successors, (1217), 856 states have internal predecessors, (1217), 249 states have call successors, (249), 45 states have call predecessors, (249), 44 states have return successors, (246), 246 states have call predecessors, (246), 246 states have call successors, (246) [2022-11-20 11:13:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1712 transitions. [2022-11-20 11:13:22,066 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1712 transitions. Word has length 18 [2022-11-20 11:13:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:22,067 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1712 transitions. [2022-11-20 11:13:22,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:13:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1712 transitions. [2022-11-20 11:13:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:13:22,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:22,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:22,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:22,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:22,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash 185497774, now seen corresponding path program 2 times [2022-11-20 11:13:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:22,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895735385] [2022-11-20 11:13:22,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:13:22,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:22,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:22,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:22,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 11:13:22,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:13:22,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:13:22,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:13:22,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:13:23,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:13:23,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:23,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895735385] [2022-11-20 11:13:23,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895735385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:23,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:23,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:13:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350457660] [2022-11-20 11:13:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:23,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:13:23,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:23,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:13:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:13:23,167 INFO L87 Difference]: Start difference. First operand 1137 states and 1712 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:13:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:23,413 INFO L93 Difference]: Finished difference Result 1142 states and 1716 transitions. [2022-11-20 11:13:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:13:23,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-20 11:13:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:23,422 INFO L225 Difference]: With dead ends: 1142 [2022-11-20 11:13:23,423 INFO L226 Difference]: Without dead ends: 1137 [2022-11-20 11:13:23,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:13:23,428 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 75 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:23,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 4961 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:13:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-11-20 11:13:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2022-11-20 11:13:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 843 states have (on average 1.442467378410439) internal successors, (1216), 856 states have internal predecessors, (1216), 249 states have call successors, (249), 45 states have call predecessors, (249), 44 states have return successors, (246), 246 states have call predecessors, (246), 246 states have call successors, (246) [2022-11-20 11:13:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1711 transitions. [2022-11-20 11:13:23,488 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1711 transitions. Word has length 30 [2022-11-20 11:13:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:23,489 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1711 transitions. [2022-11-20 11:13:23,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:13:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1711 transitions. [2022-11-20 11:13:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:13:23,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:23,491 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:23,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:23,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:23,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2033463380, now seen corresponding path program 1 times [2022-11-20 11:13:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:23,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065503702] [2022-11-20 11:13:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:23,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:23,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:23,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:23,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:13:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:24,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:13:24,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:25,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:13:26,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:26,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065503702] [2022-11-20 11:13:26,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065503702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:26,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:26,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 11:13:26,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249280457] [2022-11-20 11:13:26,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:26,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:13:26,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:13:26,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:13:26,326 INFO L87 Difference]: Start difference. First operand 1137 states and 1711 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:13:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:29,554 INFO L93 Difference]: Finished difference Result 2280 states and 3436 transitions. [2022-11-20 11:13:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:13:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-20 11:13:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:29,563 INFO L225 Difference]: With dead ends: 2280 [2022-11-20 11:13:29,564 INFO L226 Difference]: Without dead ends: 1173 [2022-11-20 11:13:29,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:13:29,571 INFO L413 NwaCegarLoop]: 1703 mSDtfsCounter, 77 mSDsluCounter, 8459 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 10162 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:29,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 10162 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 11:13:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-20 11:13:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2022-11-20 11:13:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 873 states have (on average 1.434135166093929) internal successors, (1252), 886 states have internal predecessors, (1252), 255 states have call successors, (255), 45 states have call predecessors, (255), 44 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2022-11-20 11:13:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1759 transitions. [2022-11-20 11:13:29,622 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1759 transitions. Word has length 38 [2022-11-20 11:13:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:29,623 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1759 transitions. [2022-11-20 11:13:29,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:13:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1759 transitions. [2022-11-20 11:13:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 11:13:29,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:29,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:29,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:29,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:29,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash 774484234, now seen corresponding path program 1 times [2022-11-20 11:13:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:29,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288362417] [2022-11-20 11:13:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:29,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:29,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 11:13:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:32,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:13:32,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:13:32,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:13:32,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:32,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288362417] [2022-11-20 11:13:32,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288362417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:32,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:32,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:32,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689825903] [2022-11-20 11:13:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:32,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:32,463 INFO L87 Difference]: Start difference. First operand 1173 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:13:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:32,649 INFO L93 Difference]: Finished difference Result 2339 states and 3529 transitions. [2022-11-20 11:13:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:32,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-11-20 11:13:32,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:32,665 INFO L225 Difference]: With dead ends: 2339 [2022-11-20 11:13:32,666 INFO L226 Difference]: Without dead ends: 1175 [2022-11-20 11:13:32,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:32,673 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 38 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:32,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3327 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:13:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-11-20 11:13:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2022-11-20 11:13:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 873 states have (on average 1.4329896907216495) internal successors, (1251), 886 states have internal predecessors, (1251), 255 states have call successors, (255), 45 states have call predecessors, (255), 44 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2022-11-20 11:13:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1758 transitions. [2022-11-20 11:13:32,738 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1758 transitions. Word has length 55 [2022-11-20 11:13:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:32,739 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1758 transitions. [2022-11-20 11:13:32,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:13:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1758 transitions. [2022-11-20 11:13:32,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 11:13:32,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:32,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:32,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:32,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:32,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:32,972 INFO L85 PathProgramCache]: Analyzing trace with hash 349190897, now seen corresponding path program 1 times [2022-11-20 11:13:32,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:32,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741132843] [2022-11-20 11:13:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:32,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:32,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:32,975 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:32,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 11:13:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:35,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:13:35,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:13:36,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:13:36,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:36,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741132843] [2022-11-20 11:13:36,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741132843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:36,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:36,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:13:36,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329081270] [2022-11-20 11:13:36,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:36,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:13:36,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:36,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:13:36,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:13:36,848 INFO L87 Difference]: Start difference. First operand 1173 states and 1758 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:13:40,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:40,741 INFO L93 Difference]: Finished difference Result 2347 states and 3541 transitions. [2022-11-20 11:13:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:13:40,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-11-20 11:13:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:40,750 INFO L225 Difference]: With dead ends: 2347 [2022-11-20 11:13:40,750 INFO L226 Difference]: Without dead ends: 1183 [2022-11-20 11:13:40,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:13:40,757 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 5 mSDsluCounter, 10074 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11758 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:40,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11758 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 11:13:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-11-20 11:13:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1181. [2022-11-20 11:13:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 879 states have (on average 1.4300341296928327) internal successors, (1257), 892 states have internal predecessors, (1257), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-11-20 11:13:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1771 transitions. [2022-11-20 11:13:40,844 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1771 transitions. Word has length 70 [2022-11-20 11:13:40,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:40,845 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1771 transitions. [2022-11-20 11:13:40,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:13:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1771 transitions. [2022-11-20 11:13:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 11:13:40,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:40,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:40,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:41,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:41,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:41,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:41,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1173821432, now seen corresponding path program 1 times [2022-11-20 11:13:41,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:41,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572507749] [2022-11-20 11:13:41,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:41,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:41,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:41,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 11:13:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:43,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:43,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:13:43,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:13:43,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:43,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572507749] [2022-11-20 11:13:43,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572507749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:43,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:43,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:43,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517747534] [2022-11-20 11:13:43,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:43,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:43,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:43,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:43,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:43,955 INFO L87 Difference]: Start difference. First operand 1181 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:13:46,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:46,327 INFO L93 Difference]: Finished difference Result 2355 states and 3544 transitions. [2022-11-20 11:13:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-20 11:13:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:47,030 INFO L225 Difference]: With dead ends: 2355 [2022-11-20 11:13:47,030 INFO L226 Difference]: Without dead ends: 1183 [2022-11-20 11:13:47,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:47,038 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 1 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:47,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3363 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 11:13:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-11-20 11:13:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1182. [2022-11-20 11:13:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 880 states have (on average 1.4295454545454545) internal successors, (1258), 893 states have internal predecessors, (1258), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-11-20 11:13:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1772 transitions. [2022-11-20 11:13:47,086 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1772 transitions. Word has length 77 [2022-11-20 11:13:47,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:47,087 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 1772 transitions. [2022-11-20 11:13:47,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:13:47,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1772 transitions. [2022-11-20 11:13:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:13:47,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:47,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:47,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:47,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:47,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:47,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash 283500772, now seen corresponding path program 1 times [2022-11-20 11:13:47,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:47,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159208514] [2022-11-20 11:13:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:47,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:47,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:47,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 11:13:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:50,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:13:50,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:13:50,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:13:51,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:51,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159208514] [2022-11-20 11:13:51,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159208514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:51,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:51,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 11:13:51,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034187183] [2022-11-20 11:13:51,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:51,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:13:51,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:13:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:13:51,124 INFO L87 Difference]: Start difference. First operand 1182 states and 1772 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:13:54,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:56,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:56,605 INFO L93 Difference]: Finished difference Result 2361 states and 3552 transitions. [2022-11-20 11:13:57,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:13:57,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-11-20 11:13:57,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:57,238 INFO L225 Difference]: With dead ends: 2361 [2022-11-20 11:13:57,238 INFO L226 Difference]: Without dead ends: 1188 [2022-11-20 11:13:57,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:57,245 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 4 mSDsluCounter, 5040 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6723 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:57,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6723 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 11:13:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-11-20 11:13:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2022-11-20 11:13:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 886 states have (on average 1.4266365688487586) internal successors, (1264), 899 states have internal predecessors, (1264), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-11-20 11:13:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1778 transitions. [2022-11-20 11:13:57,292 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1778 transitions. Word has length 79 [2022-11-20 11:13:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:57,293 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1778 transitions. [2022-11-20 11:13:57,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:13:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1778 transitions. [2022-11-20 11:13:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 11:13:57,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:57,295 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:57,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:57,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:57,519 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:57,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:57,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1620404950, now seen corresponding path program 2 times [2022-11-20 11:13:57,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:57,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979298230] [2022-11-20 11:13:57,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:13:57,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:57,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:57,521 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:57,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 11:13:58,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:13:58,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:13:58,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:58,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-20 11:13:58,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:13:58,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979298230] [2022-11-20 11:13:58,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979298230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:58,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:58,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:58,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131828818] [2022-11-20 11:13:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:58,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:58,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:58,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:58,382 INFO L87 Difference]: Start difference. First operand 1188 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:13:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:58,676 INFO L93 Difference]: Finished difference Result 1200 states and 1792 transitions. [2022-11-20 11:13:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2022-11-20 11:13:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:58,684 INFO L225 Difference]: With dead ends: 1200 [2022-11-20 11:13:58,684 INFO L226 Difference]: Without dead ends: 1194 [2022-11-20 11:13:58,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:58,686 INFO L413 NwaCegarLoop]: 1682 mSDtfsCounter, 5 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:58,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3361 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:13:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-11-20 11:13:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1189. [2022-11-20 11:13:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 887 states have (on average 1.4261555806087938) internal successors, (1265), 900 states have internal predecessors, (1265), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-11-20 11:13:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1779 transitions. [2022-11-20 11:13:58,729 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1779 transitions. Word has length 62 [2022-11-20 11:13:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:58,730 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1779 transitions. [2022-11-20 11:13:58,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:13:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1779 transitions. [2022-11-20 11:13:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 11:13:58,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:58,732 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2022-11-20 11:13:58,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:58,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:58,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash -182514805, now seen corresponding path program 1 times [2022-11-20 11:13:58,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:58,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396923576] [2022-11-20 11:13:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:58,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:58,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:58,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:58,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 11:13:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:59,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:13:59,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:14:05,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:14:14,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:14:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396923576] [2022-11-20 11:14:14,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396923576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:14,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:14:14,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 11:14:14,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883418921] [2022-11-20 11:14:14,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:14,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:14:14,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:14:14,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:14:14,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:14:14,944 INFO L87 Difference]: Start difference. First operand 1189 states and 1779 transitions. Second operand has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:14:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:43,427 INFO L93 Difference]: Finished difference Result 2384 states and 3578 transitions. [2022-11-20 11:14:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:14:43,428 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2022-11-20 11:14:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:43,436 INFO L225 Difference]: With dead ends: 2384 [2022-11-20 11:14:43,437 INFO L226 Difference]: Without dead ends: 1261 [2022-11-20 11:14:43,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:14:43,443 INFO L413 NwaCegarLoop]: 1732 mSDtfsCounter, 253 mSDsluCounter, 23854 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 25586 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:43,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 25586 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2022-11-20 11:14:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-11-20 11:14:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2022-11-20 11:14:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 947 states have (on average 1.4118268215417107) internal successors, (1337), 960 states have internal predecessors, (1337), 267 states have call successors, (267), 45 states have call predecessors, (267), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-11-20 11:14:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1875 transitions. [2022-11-20 11:14:43,498 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1875 transitions. Word has length 66 [2022-11-20 11:14:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:43,499 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1875 transitions. [2022-11-20 11:14:43,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:14:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1875 transitions. [2022-11-20 11:14:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 11:14:43,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:43,508 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:43,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -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 11:14:43,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:14:43,721 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1589436040, now seen corresponding path program 2 times [2022-11-20 11:14:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:14:43,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422080803] [2022-11-20 11:14:43,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:14:43,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:14:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:14:43,724 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:14:43,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 11:14:46,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:14:46,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:14:46,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:46,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:14:50,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:14:50,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:14:50,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422080803] [2022-11-20 11:14:50,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422080803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:50,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:50,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:50,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490739506] [2022-11-20 11:14:50,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:50,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:14:50,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:14:50,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:14:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:14:50,910 INFO L87 Difference]: Start difference. First operand 1261 states and 1875 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 11:14:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:51,156 INFO L93 Difference]: Finished difference Result 1263 states and 1876 transitions. [2022-11-20 11:14:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:14:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 85 [2022-11-20 11:14:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:51,167 INFO L225 Difference]: With dead ends: 1263 [2022-11-20 11:14:51,167 INFO L226 Difference]: Without dead ends: 1260 [2022-11-20 11:14:51,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:14:51,169 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1616 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:51,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 1681 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:14:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-20 11:14:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-11-20 11:14:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 947 states have (on average 1.4107708553326292) internal successors, (1336), 959 states have internal predecessors, (1336), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-11-20 11:14:51,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1873 transitions. [2022-11-20 11:14:51,232 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1873 transitions. Word has length 85 [2022-11-20 11:14:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:51,233 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1873 transitions. [2022-11-20 11:14:51,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 11:14:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1873 transitions. [2022-11-20 11:14:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:14:51,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:51,237 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:51,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:51,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:14:51,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:51,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:51,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2058670020, now seen corresponding path program 1 times [2022-11-20 11:14:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:14:51,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422706557] [2022-11-20 11:14:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:51,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:14:51,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:14:51,454 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:14:51,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 11:14:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:54,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:14:54,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:14:56,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:14:58,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:14:58,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422706557] [2022-11-20 11:14:58,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422706557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:58,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:14:58,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 11:14:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120753086] [2022-11-20 11:14:58,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:58,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:14:58,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:14:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:14:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:14:58,267 INFO L87 Difference]: Start difference. First operand 1260 states and 1873 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 11:15:04,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:07,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:09,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:12,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:14,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:17,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:17,624 INFO L93 Difference]: Finished difference Result 2523 states and 3775 transitions. [2022-11-20 11:15:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:15:18,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 118 [2022-11-20 11:15:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:18,242 INFO L225 Difference]: With dead ends: 2523 [2022-11-20 11:15:18,242 INFO L226 Difference]: Without dead ends: 1272 [2022-11-20 11:15:18,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:15:18,251 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 10 mSDsluCounter, 11746 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13427 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:18,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 13427 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 6 Unknown, 0 Unchecked, 17.2s Time] [2022-11-20 11:15:18,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-11-20 11:15:18,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1272. [2022-11-20 11:15:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 959 states have (on average 1.4056308654848801) internal successors, (1348), 971 states have internal predecessors, (1348), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-11-20 11:15:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1885 transitions. [2022-11-20 11:15:18,369 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1885 transitions. Word has length 118 [2022-11-20 11:15:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:18,369 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1885 transitions. [2022-11-20 11:15:18,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 11:15:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1885 transitions. [2022-11-20 11:15:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 11:15:18,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:18,374 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:18,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:15:18,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:15:18,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash -544920292, now seen corresponding path program 2 times [2022-11-20 11:15:18,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:15:18,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020423666] [2022-11-20 11:15:18,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:15:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:15:18,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:15:18,590 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:15:18,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 11:15:27,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:15:27,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:15:27,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:15:27,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:15:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:15:34,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:15:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:15:44,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:15:44,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020423666] [2022-11-20 11:15:44,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020423666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:15:44,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:15:44,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 11:15:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300819656] [2022-11-20 11:15:44,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:15:44,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:15:44,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:15:44,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:15:44,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:15:44,455 INFO L87 Difference]: Start difference. First operand 1272 states and 1885 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 11:16:07,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:16:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:07,718 INFO L93 Difference]: Finished difference Result 2559 states and 3817 transitions. [2022-11-20 11:16:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:16:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 130 [2022-11-20 11:16:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:08,388 INFO L225 Difference]: With dead ends: 2559 [2022-11-20 11:16:08,388 INFO L226 Difference]: Without dead ends: 1296 [2022-11-20 11:16:08,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:16:08,396 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 23 mSDsluCounter, 18458 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 20139 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:08,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 20139 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 285 Invalid, 1 Unknown, 0 Unchecked, 13.2s Time] [2022-11-20 11:16:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-11-20 11:16:08,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1296. [2022-11-20 11:16:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 983 states have (on average 1.3957273652085453) internal successors, (1372), 995 states have internal predecessors, (1372), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-11-20 11:16:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1909 transitions. [2022-11-20 11:16:08,468 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1909 transitions. Word has length 130 [2022-11-20 11:16:08,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:08,468 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1909 transitions. [2022-11-20 11:16:08,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 11:16:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1909 transitions. [2022-11-20 11:16:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 11:16:08,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:08,473 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 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] [2022-11-20 11:16:08,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:08,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:16:08,687 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:08,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1304580977, now seen corresponding path program 2 times [2022-11-20 11:16:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:16:08,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739519658] [2022-11-20 11:16:08,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:16:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:16:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:16:08,690 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:16:08,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 11:16:09,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:16:09,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:16:09,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:16:09,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2022-11-20 11:16:24,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:16:24,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:16:24,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739519658] [2022-11-20 11:16:24,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739519658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:24,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:24,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:24,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499469898] [2022-11-20 11:16:24,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:24,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:24,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:16:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:24,172 INFO L87 Difference]: Start difference. First operand 1296 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:16:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:26,368 INFO L93 Difference]: Finished difference Result 2221 states and 3309 transitions. [2022-11-20 11:16:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:26,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 114 [2022-11-20 11:16:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:26,383 INFO L225 Difference]: With dead ends: 2221 [2022-11-20 11:16:26,384 INFO L226 Difference]: Without dead ends: 2215 [2022-11-20 11:16:26,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:26,386 INFO L413 NwaCegarLoop]: 1810 mSDtfsCounter, 1092 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:26,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 3481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:16:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-11-20 11:16:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2201. [2022-11-20 11:16:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1720 states have (on average 1.4017441860465116) internal successors, (2411), 1736 states have internal predecessors, (2411), 401 states have call successors, (401), 76 states have call predecessors, (401), 79 states have return successors, (469), 403 states have call predecessors, (469), 399 states have call successors, (469) [2022-11-20 11:16:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3281 transitions. [2022-11-20 11:16:26,559 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3281 transitions. Word has length 114 [2022-11-20 11:16:26,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:26,559 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3281 transitions. [2022-11-20 11:16:26,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:16:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3281 transitions. [2022-11-20 11:16:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 11:16:26,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:26,567 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:26,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:16:26,784 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash 337648588, now seen corresponding path program 3 times [2022-11-20 11:16:26,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:16:26,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112986199] [2022-11-20 11:16:26,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:16:26,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:16:26,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:16:26,789 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:16:26,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423212bf-caba-4b65-b1b3-0341758d9428/bin/uautomizer-ug76WZFUDN/mathsat -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