./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/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_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- 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 11:06:18,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:06:18,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:06:18,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:06:18,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:06:18,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:06:18,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:06:18,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:06:18,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:06:18,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:06:18,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:06:18,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:06:18,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:06:18,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:06:18,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:06:18,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:06:18,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:06:18,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:06:18,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:06:18,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:06:18,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:06:18,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:06:18,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:06:18,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:06:18,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:06:18,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:06:18,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:06:18,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:06:18,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:06:18,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:06:18,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:06:18,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:06:18,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:06:18,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:06:18,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:06:18,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:06:18,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:06:18,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:06:18,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:06:18,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:06:18,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:06:18,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:06:18,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:06:18,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:06:18,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:06:18,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:06:18,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:06:18,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:06:18,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:06:18,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:06:18,201 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:06:18,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:06:18,203 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:06:18,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:06:18,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:06:18,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:06:18,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:06:18,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:06:18,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:06:18,204 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:06:18,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:06:18,205 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:06:18,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:06:18,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:06:18,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:06:18,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:06:18,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:06:18,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:06:18,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:06:18,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:06:18,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:06:18,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:06:18,208 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:06:18,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:06:18,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:06:18,209 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_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2022-11-20 11:06:18,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:06:18,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:06:18,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:06:18,572 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:06:18,573 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:06:18,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-11-20 11:06:21,797 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:06:22,058 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:06:22,059 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-11-20 11:06:22,076 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/data/dff585be4/5a1800db750c4961b031441664607b4b/FLAGb73e24ed8 [2022-11-20 11:06:22,095 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/data/dff585be4/5a1800db750c4961b031441664607b4b [2022-11-20 11:06:22,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:06:22,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:06:22,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:06:22,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:06:22,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:06:22,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:06:22" (1/1) ... [2022-11-20 11:06:22,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@996cee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:22, skipping insertion in model container [2022-11-20 11:06:22,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:06:22" (1/1) ... [2022-11-20 11:06:22,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:06:22,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:06:22,339 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_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2022-11-20 11:06:22,372 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 11:06:22,378 INFO L158 Benchmark]: Toolchain (without parser) took 277.34ms. Allocated memory is still 155.2MB. Free memory was 98.3MB in the beginning and 88.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:06:22,378 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:06:22,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.11ms. Allocated memory is still 155.2MB. Free memory was 98.1MB in the beginning and 88.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:06:22,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.11ms. Allocated memory is still 155.2MB. Free memory was 98.1MB in the beginning and 88.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/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_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- 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 11:06:25,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:06:25,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:06:25,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:06:25,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:06:25,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:06:25,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:06:25,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:06:25,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:06:25,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:06:25,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:06:25,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:06:25,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:06:25,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:06:25,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:06:25,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:06:25,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:06:25,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:06:25,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:06:25,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:06:25,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:06:25,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:06:25,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:06:25,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:06:25,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:06:25,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:06:25,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:06:25,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:06:25,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:06:25,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:06:25,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:06:25,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:06:25,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:06:25,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:06:25,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:06:25,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:06:25,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:06:25,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:06:25,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:06:25,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:06:25,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:06:25,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 11:06:25,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:06:25,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:06:25,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:06:25,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:06:25,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:06:25,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:06:25,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:06:25,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:06:25,316 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:06:25,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:06:25,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:06:25,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:06:25,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:06:25,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:06:25,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:06:25,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:06:25,320 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:06:25,320 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:06:25,320 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:06:25,320 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:06:25,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:06:25,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:06:25,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:06:25,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:06:25,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:06:25,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:06:25,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:06:25,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:06:25,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:06:25,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:06:25,323 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:06:25,324 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:06:25,324 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:06:25,324 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:06:25,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:06:25,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:06:25,325 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_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2022-11-20 11:06:25,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:06:25,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:06:25,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:06:25,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:06:25,811 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:06:25,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-11-20 11:06:29,430 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:06:29,756 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:06:29,757 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-11-20 11:06:29,769 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/data/45456e360/bdcd076c415e4482b134f49d8b07380a/FLAG261cd09f5 [2022-11-20 11:06:29,806 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/data/45456e360/bdcd076c415e4482b134f49d8b07380a [2022-11-20 11:06:29,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:06:29,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:06:29,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:06:29,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:06:29,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:06:29,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:06:29" (1/1) ... [2022-11-20 11:06:29,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1017235a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:29, skipping insertion in model container [2022-11-20 11:06:29,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:06:29" (1/1) ... [2022-11-20 11:06:29,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:06:29,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:06:30,077 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_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2022-11-20 11:06:30,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:06:30,144 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:06:30,158 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_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2022-11-20 11:06:30,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:06:30,204 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:06:30,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30 WrapperNode [2022-11-20 11:06:30,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:06:30,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:06:30,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:06:30,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:06:30,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,250 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2022-11-20 11:06:30,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:06:30,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:06:30,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:06:30,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:06:30,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,279 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:06:30,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:06:30,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:06:30,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:06:30,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (1/1) ... [2022-11-20 11:06:30,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:06:30,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:30,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:06:30,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:06:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:06:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:06:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-20 11:06:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-20 11:06:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:06:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:06:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:06:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:06:30,532 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:06:30,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:06:31,074 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:06:31,081 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:06:31,082 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:06:31,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:06:31 BoogieIcfgContainer [2022-11-20 11:06:31,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:06:31,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:06:31,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:06:31,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:06:31,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:06:29" (1/3) ... [2022-11-20 11:06:31,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71512196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:06:31, skipping insertion in model container [2022-11-20 11:06:31,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:06:30" (2/3) ... [2022-11-20 11:06:31,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71512196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:06:31, skipping insertion in model container [2022-11-20 11:06:31,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:06:31" (3/3) ... [2022-11-20 11:06:31,106 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2022-11-20 11:06:31,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:06:31,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:06:31,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:06:31,220 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;@46874f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:06:31,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:06:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 44 states have internal predecessors, (66), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:06:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:06:31,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:31,239 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:31,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:31,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:31,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1696138713, now seen corresponding path program 1 times [2022-11-20 11:06:31,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:31,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107254670] [2022-11-20 11:06:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:31,265 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 11:06:31,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:31,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:31,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:31,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:06:31,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:31,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:31,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:31,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107254670] [2022-11-20 11:06:31,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107254670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:31,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:31,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:06:31,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789418507] [2022-11-20 11:06:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:31,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:06:31,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:31,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:06:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:06:31,552 INFO L87 Difference]: Start difference. First operand has 51 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 44 states have internal predecessors, (66), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:06:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:31,736 INFO L93 Difference]: Finished difference Result 113 states and 179 transitions. [2022-11-20 11:06:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:06:31,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-20 11:06:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:31,750 INFO L225 Difference]: With dead ends: 113 [2022-11-20 11:06:31,750 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 11:06:31,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:06:31,758 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 16 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:31,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 161 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 11:06:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2022-11-20 11:06:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 11:06:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2022-11-20 11:06:31,812 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 41 [2022-11-20 11:06:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:31,813 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2022-11-20 11:06:31,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:06:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2022-11-20 11:06:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:06:31,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:31,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:31,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:32,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:32,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:32,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1421820539, now seen corresponding path program 1 times [2022-11-20 11:06:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:32,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402892713] [2022-11-20 11:06:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:32,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:06:32,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:32,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:32,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:32,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:06:32,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:32,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:32,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:32,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402892713] [2022-11-20 11:06:32,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402892713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:32,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:32,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:06:32,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759348266] [2022-11-20 11:06:32,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:32,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:06:32,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:06:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:06:32,221 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:06:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:32,360 INFO L93 Difference]: Finished difference Result 105 states and 150 transitions. [2022-11-20 11:06:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:06:32,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2022-11-20 11:06:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:32,364 INFO L225 Difference]: With dead ends: 105 [2022-11-20 11:06:32,364 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 11:06:32,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:06:32,367 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 10 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:32,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 154 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:32,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 11:06:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2022-11-20 11:06:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.391304347826087) internal successors, (64), 47 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:06:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 77 transitions. [2022-11-20 11:06:32,400 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 77 transitions. Word has length 44 [2022-11-20 11:06:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:32,401 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 77 transitions. [2022-11-20 11:06:32,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:06:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 77 transitions. [2022-11-20 11:06:32,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:06:32,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:32,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:32,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:32,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:32,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:32,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:32,623 INFO L85 PathProgramCache]: Analyzing trace with hash -865634876, now seen corresponding path program 1 times [2022-11-20 11:06:32,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:32,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279839258] [2022-11-20 11:06:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:32,624 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 11:06:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:32,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:32,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:32,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:06:32,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:32,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:32,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279839258] [2022-11-20 11:06:32,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279839258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:32,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:32,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:06:32,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067487587] [2022-11-20 11:06:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:32,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:06:32,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:32,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:06:32,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:06:32,804 INFO L87 Difference]: Start difference. First operand 55 states and 77 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:06:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:32,985 INFO L93 Difference]: Finished difference Result 114 states and 162 transitions. [2022-11-20 11:06:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:06:32,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2022-11-20 11:06:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:32,988 INFO L225 Difference]: With dead ends: 114 [2022-11-20 11:06:32,994 INFO L226 Difference]: Without dead ends: 66 [2022-11-20 11:06:32,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:06:32,996 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 17 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:32,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 147 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-20 11:06:33,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2022-11-20 11:06:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:06:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2022-11-20 11:06:33,021 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 45 [2022-11-20 11:06:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:33,022 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2022-11-20 11:06:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:06:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2022-11-20 11:06:33,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 11:06:33,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:33,026 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:33,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:33,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:33,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 155611130, now seen corresponding path program 1 times [2022-11-20 11:06:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:33,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284003432] [2022-11-20 11:06:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:33,243 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 11:06:33,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:33,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:33,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:06:33,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:33,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:33,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284003432] [2022-11-20 11:06:33,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284003432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:33,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:33,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:06:33,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465331135] [2022-11-20 11:06:33,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:33,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:06:33,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:33,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:06:33,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:06:33,437 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:06:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:33,633 INFO L93 Difference]: Finished difference Result 122 states and 173 transitions. [2022-11-20 11:06:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:06:33,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-11-20 11:06:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:33,636 INFO L225 Difference]: With dead ends: 122 [2022-11-20 11:06:33,636 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 11:06:33,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:06:33,638 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 19 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:33,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 194 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 11:06:33,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2022-11-20 11:06:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 49 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:06:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2022-11-20 11:06:33,654 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 46 [2022-11-20 11:06:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:33,654 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2022-11-20 11:06:33,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:06:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2022-11-20 11:06:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:06:33,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:33,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:33,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:33,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:33,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash 709732423, now seen corresponding path program 1 times [2022-11-20 11:06:33,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:33,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607980064] [2022-11-20 11:06:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:33,878 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 11:06:33,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:33,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:33,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:06:34,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:34,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:06:34,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:34,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607980064] [2022-11-20 11:06:34,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607980064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:34,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:34,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:06:34,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546240856] [2022-11-20 11:06:34,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:34,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:06:34,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:34,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:06:34,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:06:34,448 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:34,812 INFO L93 Difference]: Finished difference Result 143 states and 205 transitions. [2022-11-20 11:06:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:06:34,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-11-20 11:06:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:34,815 INFO L225 Difference]: With dead ends: 143 [2022-11-20 11:06:34,815 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 11:06:34,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:06:34,817 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 52 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:34,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 266 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:06:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 11:06:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 65. [2022-11-20 11:06:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:06:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2022-11-20 11:06:34,835 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 47 [2022-11-20 11:06:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:34,835 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2022-11-20 11:06:34,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2022-11-20 11:06:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 11:06:34,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:34,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:34,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:35,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:35,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:35,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1261268282, now seen corresponding path program 1 times [2022-11-20 11:06:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:35,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200993885] [2022-11-20 11:06:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:35,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:06:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:35,055 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:35,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:35,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:06:35,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:35,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:06:35,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:35,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200993885] [2022-11-20 11:06:35,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200993885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:35,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:35,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 11:06:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031511340] [2022-11-20 11:06:35,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:06:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:06:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:06:35,490 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:36,008 INFO L93 Difference]: Finished difference Result 161 states and 233 transitions. [2022-11-20 11:06:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:06:36,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2022-11-20 11:06:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:36,012 INFO L225 Difference]: With dead ends: 161 [2022-11-20 11:06:36,012 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 11:06:36,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:06:36,014 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 106 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:36,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 360 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:06:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 11:06:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 69. [2022-11-20 11:06:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.45) internal successors, (87), 61 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:06:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 100 transitions. [2022-11-20 11:06:36,040 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 100 transitions. Word has length 49 [2022-11-20 11:06:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:36,040 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 100 transitions. [2022-11-20 11:06:36,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 100 transitions. [2022-11-20 11:06:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:06:36,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:36,049 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:36,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:36,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:36,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:36,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash 243604347, now seen corresponding path program 2 times [2022-11-20 11:06:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:36,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071039819] [2022-11-20 11:06:36,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:06:36,266 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 11:06:36,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:36,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:36,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:36,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:06:36,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:36,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:06:36,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:06:36,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:36,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071039819] [2022-11-20 11:06:36,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071039819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:36,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:36,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:06:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17868965] [2022-11-20 11:06:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:06:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:06:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:06:36,429 INFO L87 Difference]: Start difference. First operand 69 states and 100 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:06:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:36,518 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2022-11-20 11:06:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:06:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2022-11-20 11:06:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:36,521 INFO L225 Difference]: With dead ends: 109 [2022-11-20 11:06:36,521 INFO L226 Difference]: Without dead ends: 88 [2022-11-20 11:06:36,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:06:36,523 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 17 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:36,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 288 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-20 11:06:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2022-11-20 11:06:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 69 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:06:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2022-11-20 11:06:36,546 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 56 [2022-11-20 11:06:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:36,546 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2022-11-20 11:06:36,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:06:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2022-11-20 11:06:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:06:36,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:36,548 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:36,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:36,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:36,763 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:36,764 INFO L85 PathProgramCache]: Analyzing trace with hash 944668925, now seen corresponding path program 1 times [2022-11-20 11:06:36,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:36,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729628132] [2022-11-20 11:06:36,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:36,765 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 11:06:36,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:36,766 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:36,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:36,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:06:36,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:37,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:06:37,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729628132] [2022-11-20 11:06:37,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729628132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:37,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:37,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 11:06:37,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756683697] [2022-11-20 11:06:37,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:37,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:06:37,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:06:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:06:37,582 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:39,000 INFO L93 Difference]: Finished difference Result 220 states and 317 transitions. [2022-11-20 11:06:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:06:39,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2022-11-20 11:06:39,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:39,003 INFO L225 Difference]: With dead ends: 220 [2022-11-20 11:06:39,004 INFO L226 Difference]: Without dead ends: 149 [2022-11-20 11:06:39,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:06:39,005 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 182 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:39,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 529 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:06:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-20 11:06:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 92. [2022-11-20 11:06:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 83 states have internal predecessors, (117), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:06:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 135 transitions. [2022-11-20 11:06:39,057 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 135 transitions. Word has length 56 [2022-11-20 11:06:39,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:39,063 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 135 transitions. [2022-11-20 11:06:39,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 135 transitions. [2022-11-20 11:06:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 11:06:39,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:39,066 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:39,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:39,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:39,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:39,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1013596344, now seen corresponding path program 1 times [2022-11-20 11:06:39,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:39,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380476701] [2022-11-20 11:06:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:39,282 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 11:06:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:39,285 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:39,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:39,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:06:39,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 24 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:39,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:06:40,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:40,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380476701] [2022-11-20 11:06:40,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380476701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:40,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:40,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 11:06:40,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500328356] [2022-11-20 11:06:40,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:40,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:06:40,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:40,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:06:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:06:40,056 INFO L87 Difference]: Start difference. First operand 92 states and 135 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:41,347 INFO L93 Difference]: Finished difference Result 243 states and 355 transitions. [2022-11-20 11:06:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:06:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-11-20 11:06:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:41,351 INFO L225 Difference]: With dead ends: 243 [2022-11-20 11:06:41,351 INFO L226 Difference]: Without dead ends: 158 [2022-11-20 11:06:41,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:06:41,353 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 406 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:41,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 608 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:06:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-20 11:06:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 102. [2022-11-20 11:06:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 91 states have (on average 1.4725274725274726) internal successors, (134), 93 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:06:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 152 transitions. [2022-11-20 11:06:41,388 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 152 transitions. Word has length 61 [2022-11-20 11:06:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:41,389 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 152 transitions. [2022-11-20 11:06:41,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 152 transitions. [2022-11-20 11:06:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 11:06:41,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:41,392 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:41,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:41,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:41,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash -206571907, now seen corresponding path program 2 times [2022-11-20 11:06:41,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:41,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542161140] [2022-11-20 11:06:41,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:06:41,605 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 11:06:41,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:41,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:41,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:41,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:06:41,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:41,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:06:41,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-20 11:06:41,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:41,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:41,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542161140] [2022-11-20 11:06:41,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542161140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:41,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:41,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:06:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136314695] [2022-11-20 11:06:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:41,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:06:41,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:06:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:06:41,700 INFO L87 Difference]: Start difference. First operand 102 states and 152 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:06:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:41,719 INFO L93 Difference]: Finished difference Result 111 states and 162 transitions. [2022-11-20 11:06:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:06:41,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2022-11-20 11:06:41,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:41,725 INFO L225 Difference]: With dead ends: 111 [2022-11-20 11:06:41,725 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 11:06:41,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 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 11:06:41,726 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:41,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:06:41,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 11:06:41,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-20 11:06:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 91 states have (on average 1.4615384615384615) internal successors, (133), 93 states have internal predecessors, (133), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:06:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 151 transitions. [2022-11-20 11:06:41,748 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 151 transitions. Word has length 74 [2022-11-20 11:06:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:41,748 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 151 transitions. [2022-11-20 11:06:41,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:06:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 151 transitions. [2022-11-20 11:06:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 11:06:41,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:41,754 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:41,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:41,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:41,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:41,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash -138085853, now seen corresponding path program 1 times [2022-11-20 11:06:41,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:41,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334463352] [2022-11-20 11:06:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:41,969 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 11:06:41,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:41,970 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:41,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:06:42,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:42,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 163 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:06:44,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334463352] [2022-11-20 11:06:44,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334463352] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:44,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:44,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-20 11:06:44,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798957882] [2022-11-20 11:06:44,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:44,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:06:44,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:06:44,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:06:44,251 INFO L87 Difference]: Start difference. First operand 102 states and 151 transitions. Second operand has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:50,124 INFO L93 Difference]: Finished difference Result 346 states and 503 transitions. [2022-11-20 11:06:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:06:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 76 [2022-11-20 11:06:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:50,128 INFO L225 Difference]: With dead ends: 346 [2022-11-20 11:06:50,128 INFO L226 Difference]: Without dead ends: 251 [2022-11-20 11:06:50,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=729, Invalid=1433, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 11:06:50,131 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 622 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:50,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1586 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:06:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-20 11:06:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 128. [2022-11-20 11:06:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 117 states have (on average 1.5042735042735043) internal successors, (176), 119 states have internal predecessors, (176), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:06:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 194 transitions. [2022-11-20 11:06:50,166 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 194 transitions. Word has length 76 [2022-11-20 11:06:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:50,167 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 194 transitions. [2022-11-20 11:06:50,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 194 transitions. [2022-11-20 11:06:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:06:50,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:50,169 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:50,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:50,383 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1709984302, now seen corresponding path program 1 times [2022-11-20 11:06:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:50,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927427680] [2022-11-20 11:06:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:50,384 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 11:06:50,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:50,385 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:50,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:50,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:06:50,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 273 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:51,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 4 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:06:52,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:52,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927427680] [2022-11-20 11:06:52,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927427680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:52,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:52,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-20 11:06:52,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942756311] [2022-11-20 11:06:52,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:52,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:06:52,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:52,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:06:52,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:06:52,588 INFO L87 Difference]: Start difference. First operand 128 states and 194 transitions. Second operand has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:55,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:55,843 INFO L93 Difference]: Finished difference Result 347 states and 509 transitions. [2022-11-20 11:06:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:06:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-11-20 11:06:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:55,850 INFO L225 Difference]: With dead ends: 347 [2022-11-20 11:06:55,850 INFO L226 Difference]: Without dead ends: 226 [2022-11-20 11:06:55,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=991, Invalid=2315, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 11:06:55,853 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1067 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:55,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1682 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:06:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-20 11:06:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 132. [2022-11-20 11:06:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 121 states have (on average 1.512396694214876) internal successors, (183), 123 states have internal predecessors, (183), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:06:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 201 transitions. [2022-11-20 11:06:55,894 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 201 transitions. Word has length 87 [2022-11-20 11:06:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:55,895 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 201 transitions. [2022-11-20 11:06:55,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:06:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 201 transitions. [2022-11-20 11:06:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 11:06:55,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:55,897 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:55,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:56,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:56,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1989016285, now seen corresponding path program 2 times [2022-11-20 11:06:56,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:56,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353640651] [2022-11-20 11:06:56,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:06:56,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:06:56,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:56,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:56,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:56,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:06:56,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:56,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:06:56,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-20 11:06:56,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:56,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:06:56,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353640651] [2022-11-20 11:06:56,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353640651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:56,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:56,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:06:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425967709] [2022-11-20 11:06:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:56,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:06:56,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:06:56,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:06:56,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:06:56,218 INFO L87 Difference]: Start difference. First operand 132 states and 201 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:06:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:56,292 INFO L93 Difference]: Finished difference Result 169 states and 251 transitions. [2022-11-20 11:06:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:06:56,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 112 [2022-11-20 11:06:56,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:56,294 INFO L225 Difference]: With dead ends: 169 [2022-11-20 11:06:56,294 INFO L226 Difference]: Without dead ends: 159 [2022-11-20 11:06:56,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:06:56,295 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 44 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:56,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 199 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:06:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-20 11:06:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 137. [2022-11-20 11:06:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 126 states have (on average 1.5) internal successors, (189), 128 states have internal predecessors, (189), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:06:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 207 transitions. [2022-11-20 11:06:56,317 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 207 transitions. Word has length 112 [2022-11-20 11:06:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:56,318 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 207 transitions. [2022-11-20 11:06:56,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:06:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 207 transitions. [2022-11-20 11:06:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 11:06:56,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:56,320 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:56,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:56,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:56,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:56,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:56,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1496604385, now seen corresponding path program 1 times [2022-11-20 11:06:56,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:06:56,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216495690] [2022-11-20 11:06:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:56,541 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 11:06:56,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:06:56,543 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:56,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:06:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:56,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:06:56,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 24 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:06:58,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 4 proven. 745 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:07:02,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:02,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216495690] [2022-11-20 11:07:02,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216495690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:02,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:02,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-20 11:07:02,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027348877] [2022-11-20 11:07:02,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:02,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 11:07:02,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:02,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 11:07:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 11:07:02,993 INFO L87 Difference]: Start difference. First operand 137 states and 207 transitions. Second operand has 50 states, 50 states have (on average 3.44) internal successors, (172), 50 states have internal predecessors, (172), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:07:30,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:30,865 INFO L93 Difference]: Finished difference Result 590 states and 867 transitions. [2022-11-20 11:07:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-20 11:07:30,867 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.44) internal successors, (172), 50 states have internal predecessors, (172), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 112 [2022-11-20 11:07:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:30,871 INFO L225 Difference]: With dead ends: 590 [2022-11-20 11:07:30,871 INFO L226 Difference]: Without dead ends: 460 [2022-11-20 11:07:30,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=2901, Invalid=6029, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 11:07:30,876 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 2282 mSDsluCounter, 4896 mSDsCounter, 0 mSdLazyCounter, 4441 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2282 SdHoareTripleChecker+Valid, 5104 SdHoareTripleChecker+Invalid, 4786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 4441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:30,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2282 Valid, 5104 Invalid, 4786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [345 Valid, 4441 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-20 11:07:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-20 11:07:30,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 205. [2022-11-20 11:07:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 194 states have (on average 1.556701030927835) internal successors, (302), 196 states have internal predecessors, (302), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:07:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2022-11-20 11:07:30,927 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 112 [2022-11-20 11:07:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:30,927 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2022-11-20 11:07:30,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.44) internal successors, (172), 50 states have internal predecessors, (172), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:07:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2022-11-20 11:07:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 11:07:30,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:30,930 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:30,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:07:31,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:07:31,146 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:31,147 INFO L85 PathProgramCache]: Analyzing trace with hash 746014060, now seen corresponding path program 1 times [2022-11-20 11:07:31,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:31,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386781977] [2022-11-20 11:07:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:31,148 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 11:07:31,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:31,149 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:07:31,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 11:07:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 11:07:31,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 10 proven. 836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:07:34,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 10 proven. 836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:07:43,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:43,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386781977] [2022-11-20 11:07:43,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386781977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:43,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:43,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 66 [2022-11-20 11:07:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107787715] [2022-11-20 11:07:43,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:43,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-20 11:07:43,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:43,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-20 11:07:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=3524, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 11:07:43,467 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand has 66 states, 66 states have (on average 2.8636363636363638) internal successors, (189), 62 states have internal predecessors, (189), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:09:13,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:13,476 INFO L93 Difference]: Finished difference Result 569 states and 1122 transitions. [2022-11-20 11:09:13,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-11-20 11:09:13,477 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.8636363636363638) internal successors, (189), 62 states have internal predecessors, (189), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2022-11-20 11:09:13,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:13,482 INFO L225 Difference]: With dead ends: 569 [2022-11-20 11:09:13,483 INFO L226 Difference]: Without dead ends: 546 [2022-11-20 11:09:13,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 73.9s TimeCoverageRelationStatistics Valid=11300, Invalid=45582, Unknown=0, NotChecked=0, Total=56882 [2022-11-20 11:09:13,497 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 3180 mSDsluCounter, 4392 mSDsCounter, 0 mSdLazyCounter, 12231 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 4517 SdHoareTripleChecker+Invalid, 12920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 12231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:13,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3188 Valid, 4517 Invalid, 12920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [689 Valid, 12231 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time] [2022-11-20 11:09:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-11-20 11:09:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 223. [2022-11-20 11:09:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 209 states have (on average 1.5502392344497609) internal successors, (324), 212 states have internal predecessors, (324), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-20 11:09:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 356 transitions. [2022-11-20 11:09:13,632 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 356 transitions. Word has length 117 [2022-11-20 11:09:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:13,633 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 356 transitions. [2022-11-20 11:09:13,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.8636363636363638) internal successors, (189), 62 states have internal predecessors, (189), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:09:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 356 transitions. [2022-11-20 11:09:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 11:09:13,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:13,635 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:13,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:13,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:13,843 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash -951776873, now seen corresponding path program 1 times [2022-11-20 11:09:13,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:13,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198335114] [2022-11-20 11:09:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:13,844 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 11:09:13,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:13,846 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:13,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 11:09:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:13,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:09:13,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-20 11:09:13,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:13,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:13,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198335114] [2022-11-20 11:09:13,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198335114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:13,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:13,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:09:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382215455] [2022-11-20 11:09:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:13,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:09:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:09:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:09:13,966 INFO L87 Difference]: Start difference. First operand 223 states and 356 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:09:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:14,052 INFO L93 Difference]: Finished difference Result 233 states and 367 transitions. [2022-11-20 11:09:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:09:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 121 [2022-11-20 11:09:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:14,055 INFO L225 Difference]: With dead ends: 233 [2022-11-20 11:09:14,055 INFO L226 Difference]: Without dead ends: 223 [2022-11-20 11:09:14,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:09:14,056 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:14,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 182 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-20 11:09:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 218. [2022-11-20 11:09:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 204 states have (on average 1.553921568627451) internal successors, (317), 207 states have internal predecessors, (317), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-20 11:09:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 349 transitions. [2022-11-20 11:09:14,120 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 349 transitions. Word has length 121 [2022-11-20 11:09:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:14,121 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 349 transitions. [2022-11-20 11:09:14,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:09:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 349 transitions. [2022-11-20 11:09:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 11:09:14,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:14,123 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:14,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:14,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:14,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1761123499, now seen corresponding path program 1 times [2022-11-20 11:09:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:14,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234976440] [2022-11-20 11:09:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:14,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:14,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:14,337 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:14,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 11:09:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:14,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:09:14,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-20 11:09:14,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-20 11:09:14,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:14,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234976440] [2022-11-20 11:09:14,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234976440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:14,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:14,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-20 11:09:14,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612392135] [2022-11-20 11:09:14,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:14,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:14,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:14,559 INFO L87 Difference]: Start difference. First operand 218 states and 349 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:09:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:14,691 INFO L93 Difference]: Finished difference Result 249 states and 397 transitions. [2022-11-20 11:09:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:09:14,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 121 [2022-11-20 11:09:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:14,694 INFO L225 Difference]: With dead ends: 249 [2022-11-20 11:09:14,695 INFO L226 Difference]: Without dead ends: 244 [2022-11-20 11:09:14,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:09:14,696 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 19 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:14,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 276 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:09:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-20 11:09:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2022-11-20 11:09:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 225 states have (on average 1.5333333333333334) internal successors, (345), 226 states have internal predecessors, (345), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 11 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 11:09:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 388 transitions. [2022-11-20 11:09:14,788 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 388 transitions. Word has length 121 [2022-11-20 11:09:14,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:14,789 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 388 transitions. [2022-11-20 11:09:14,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:09:14,789 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 388 transitions. [2022-11-20 11:09:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 11:09:14,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:14,791 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:14,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:15,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:15,003 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash 598919099, now seen corresponding path program 1 times [2022-11-20 11:09:15,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:15,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885133061] [2022-11-20 11:09:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:15,004 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 11:09:15,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:15,005 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:15,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 11:09:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:15,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:09:15,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-20 11:09:15,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:15,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:15,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885133061] [2022-11-20 11:09:15,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885133061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:15,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:15,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:09:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466121151] [2022-11-20 11:09:15,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:15,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:09:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:09:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:09:15,138 INFO L87 Difference]: Start difference. First operand 241 states and 388 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:09:15,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:15,247 INFO L93 Difference]: Finished difference Result 264 states and 412 transitions. [2022-11-20 11:09:15,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:09:15,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 123 [2022-11-20 11:09:15,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:15,250 INFO L225 Difference]: With dead ends: 264 [2022-11-20 11:09:15,250 INFO L226 Difference]: Without dead ends: 258 [2022-11-20 11:09:15,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:09:15,251 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 22 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:15,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 225 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:15,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-20 11:09:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2022-11-20 11:09:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 240 states have (on average 1.5041666666666667) internal successors, (361), 241 states have internal predecessors, (361), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 11 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 11:09:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 404 transitions. [2022-11-20 11:09:15,319 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 404 transitions. Word has length 123 [2022-11-20 11:09:15,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:15,319 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 404 transitions. [2022-11-20 11:09:15,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:09:15,320 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 404 transitions. [2022-11-20 11:09:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 11:09:15,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:15,321 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:15,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:15,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:15,534 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:15,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:15,534 INFO L85 PathProgramCache]: Analyzing trace with hash 656177401, now seen corresponding path program 1 times [2022-11-20 11:09:15,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:15,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366892682] [2022-11-20 11:09:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:15,535 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 11:09:15,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:15,536 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:15,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 11:09:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:15,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:09:15,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-20 11:09:15,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:15,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:15,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366892682] [2022-11-20 11:09:15,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366892682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:15,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:15,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:09:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618017079] [2022-11-20 11:09:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:15,681 INFO L87 Difference]: Start difference. First operand 256 states and 404 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:09:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:15,767 INFO L93 Difference]: Finished difference Result 262 states and 409 transitions. [2022-11-20 11:09:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:09:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 123 [2022-11-20 11:09:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:15,770 INFO L225 Difference]: With dead ends: 262 [2022-11-20 11:09:15,770 INFO L226 Difference]: Without dead ends: 245 [2022-11-20 11:09:15,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:09:15,771 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 2 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:15,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 290 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-20 11:09:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2022-11-20 11:09:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 228 states have (on average 1.513157894736842) internal successors, (345), 230 states have internal predecessors, (345), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 9 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-20 11:09:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 381 transitions. [2022-11-20 11:09:15,838 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 381 transitions. Word has length 123 [2022-11-20 11:09:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:15,839 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 381 transitions. [2022-11-20 11:09:15,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:09:15,839 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 381 transitions. [2022-11-20 11:09:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:09:15,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:15,840 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:15,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:16,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:16,052 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1103110160, now seen corresponding path program 1 times [2022-11-20 11:09:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:16,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398108432] [2022-11-20 11:09:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:16,053 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 11:09:16,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:16,054 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:16,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 11:09:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:16,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:09:16,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-20 11:09:16,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-20 11:09:16,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:16,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398108432] [2022-11-20 11:09:16,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398108432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:16,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:16,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-20 11:09:16,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990267994] [2022-11-20 11:09:16,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:16,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:09:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:09:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:09:16,282 INFO L87 Difference]: Start difference. First operand 243 states and 381 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:09:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:16,461 INFO L93 Difference]: Finished difference Result 259 states and 396 transitions. [2022-11-20 11:09:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:09:16,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-11-20 11:09:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:16,463 INFO L225 Difference]: With dead ends: 259 [2022-11-20 11:09:16,463 INFO L226 Difference]: Without dead ends: 233 [2022-11-20 11:09:16,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:09:16,464 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 13 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:16,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 390 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:09:16,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-20 11:09:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 225. [2022-11-20 11:09:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 211 states have (on average 1.5308056872037914) internal successors, (323), 214 states have internal predecessors, (323), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-20 11:09:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 349 transitions. [2022-11-20 11:09:16,528 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 349 transitions. Word has length 124 [2022-11-20 11:09:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:16,529 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 349 transitions. [2022-11-20 11:09:16,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:09:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 349 transitions. [2022-11-20 11:09:16,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 11:09:16,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:16,530 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:16,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:16,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:16,743 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:16,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1474812810, now seen corresponding path program 2 times [2022-11-20 11:09:16,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:16,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143947073] [2022-11-20 11:09:16,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:09:16,745 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 11:09:16,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:16,746 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:16,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 11:09:16,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:09:16,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:16,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:09:16,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2022-11-20 11:09:16,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:16,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:16,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143947073] [2022-11-20 11:09:16,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143947073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:16,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:16,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:09:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066741468] [2022-11-20 11:09:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:16,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:09:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:09:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:09:16,841 INFO L87 Difference]: Start difference. First operand 225 states and 349 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:09:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:16,953 INFO L93 Difference]: Finished difference Result 261 states and 391 transitions. [2022-11-20 11:09:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:09:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 125 [2022-11-20 11:09:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:16,956 INFO L225 Difference]: With dead ends: 261 [2022-11-20 11:09:16,956 INFO L226 Difference]: Without dead ends: 249 [2022-11-20 11:09:16,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:16,957 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 53 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:16,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 249 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:09:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-20 11:09:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 226. [2022-11-20 11:09:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 212 states have (on average 1.528301886792453) internal successors, (324), 215 states have internal predecessors, (324), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-20 11:09:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 350 transitions. [2022-11-20 11:09:17,023 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 350 transitions. Word has length 125 [2022-11-20 11:09:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:17,024 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 350 transitions. [2022-11-20 11:09:17,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:09:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 350 transitions. [2022-11-20 11:09:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 11:09:17,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:17,025 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:17,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:17,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:17,236 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:17,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:17,236 INFO L85 PathProgramCache]: Analyzing trace with hash 888006796, now seen corresponding path program 1 times [2022-11-20 11:09:17,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:17,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951693791] [2022-11-20 11:09:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:17,237 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 11:09:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:17,238 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:09:17,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 11:09:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:17,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-20 11:09:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:09:20,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:09:27,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:27,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951693791] [2022-11-20 11:09:27,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951693791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:27,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:27,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2022-11-20 11:09:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94448764] [2022-11-20 11:09:27,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:27,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-20 11:09:27,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:27,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-20 11:09:27,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 11:09:27,097 INFO L87 Difference]: Start difference. First operand 226 states and 350 transitions. Second operand has 64 states, 64 states have (on average 2.984375) internal successors, (191), 62 states have internal predecessors, (191), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:10:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:39,101 INFO L93 Difference]: Finished difference Result 601 states and 889 transitions. [2022-11-20 11:10:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-11-20 11:10:39,102 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.984375) internal successors, (191), 62 states have internal predecessors, (191), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 125 [2022-11-20 11:10:39,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:39,108 INFO L225 Difference]: With dead ends: 601 [2022-11-20 11:10:39,108 INFO L226 Difference]: Without dead ends: 586 [2022-11-20 11:10:39,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10219 ImplicationChecksByTransitivity, 64.1s TimeCoverageRelationStatistics Valid=8299, Invalid=26483, Unknown=0, NotChecked=0, Total=34782 [2022-11-20 11:10:39,116 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 3214 mSDsluCounter, 3871 mSDsCounter, 0 mSdLazyCounter, 7606 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 8247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 7606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:39,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3214 Valid, 3987 Invalid, 8247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [641 Valid, 7606 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-11-20 11:10:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-20 11:10:39,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 228. [2022-11-20 11:10:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 214 states have (on average 1.52803738317757) internal successors, (327), 216 states have internal predecessors, (327), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-20 11:10:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 353 transitions. [2022-11-20 11:10:39,210 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 353 transitions. Word has length 125 [2022-11-20 11:10:39,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:39,210 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 353 transitions. [2022-11-20 11:10:39,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.984375) internal successors, (191), 62 states have internal predecessors, (191), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:10:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 353 transitions. [2022-11-20 11:10:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-20 11:10:39,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:39,212 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:39,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:39,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:10:39,424 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:39,424 INFO L85 PathProgramCache]: Analyzing trace with hash 989289301, now seen corresponding path program 1 times [2022-11-20 11:10:39,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:39,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057175705] [2022-11-20 11:10:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:39,425 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 11:10:39,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:39,426 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:10:39,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 11:10:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:39,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:10:39,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2022-11-20 11:10:39,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:39,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:39,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057175705] [2022-11-20 11:10:39,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057175705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:39,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:39,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:10:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098483670] [2022-11-20 11:10:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:39,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:10:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:10:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:10:39,559 INFO L87 Difference]: Start difference. First operand 228 states and 353 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:10:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:39,688 INFO L93 Difference]: Finished difference Result 243 states and 368 transitions. [2022-11-20 11:10:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:10:39,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 126 [2022-11-20 11:10:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:39,691 INFO L225 Difference]: With dead ends: 243 [2022-11-20 11:10:39,691 INFO L226 Difference]: Without dead ends: 238 [2022-11-20 11:10:39,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:10:39,692 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 20 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:39,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 234 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:10:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-20 11:10:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 235. [2022-11-20 11:10:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 221 states have (on average 1.51131221719457) internal successors, (334), 223 states have internal predecessors, (334), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-20 11:10:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 360 transitions. [2022-11-20 11:10:39,762 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 360 transitions. Word has length 126 [2022-11-20 11:10:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:39,762 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 360 transitions. [2022-11-20 11:10:39,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:10:39,763 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 360 transitions. [2022-11-20 11:10:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 11:10:39,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:39,764 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:39,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-20 11:10:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:10:39,976 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -531623995, now seen corresponding path program 1 times [2022-11-20 11:10:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:39,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650401691] [2022-11-20 11:10:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:39,977 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 11:10:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:39,978 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:10:39,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 11:10:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:40,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 11:10:40,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:10:43,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:44,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650401691] [2022-11-20 11:10:44,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650401691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2116231754] [2022-11-20 11:10:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:44,852 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 11:10:44,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 11:10:44,853 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 11:10:44,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-20 11:10:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:45,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-20 11:10:45,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:10:46,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:48,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2116231754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:48,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:48,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 38 [2022-11-20 11:10:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279000788] [2022-11-20 11:10:48,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 11:10:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:48,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 11:10:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2185, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 11:10:48,532 INFO L87 Difference]: Start difference. First operand 235 states and 360 transitions. Second operand has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:10:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:58,870 INFO L93 Difference]: Finished difference Result 366 states and 512 transitions. [2022-11-20 11:10:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:10:58,871 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 127 [2022-11-20 11:10:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:58,874 INFO L225 Difference]: With dead ends: 366 [2022-11-20 11:10:58,874 INFO L226 Difference]: Without dead ends: 354 [2022-11-20 11:10:58,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=184, Invalid=2366, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 11:10:58,876 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 116 mSDsluCounter, 3542 mSDsCounter, 0 mSdLazyCounter, 5096 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 5450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:58,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 3666 Invalid, 5450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5096 Invalid, 0 Unknown, 354 Unchecked, 9.7s Time] [2022-11-20 11:10:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-20 11:10:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2022-11-20 11:10:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 231 states have (on average 1.4978354978354977) internal successors, (346), 233 states have internal predecessors, (346), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (32), 11 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 11:10:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 387 transitions. [2022-11-20 11:10:58,975 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 387 transitions. Word has length 127 [2022-11-20 11:10:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:58,976 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 387 transitions. [2022-11-20 11:10:58,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:10:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 387 transitions. [2022-11-20 11:10:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 11:10:58,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:58,978 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:58,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:59,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-11-20 11:10:59,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 11:10:59,390 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:59,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1811487673, now seen corresponding path program 1 times [2022-11-20 11:10:59,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:59,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56333645] [2022-11-20 11:10:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:59,392 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 11:10:59,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:59,393 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:10:59,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 11:10:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:59,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 11:10:59,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:11:03,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:04,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:04,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56333645] [2022-11-20 11:11:04,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56333645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:04,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [857197588] [2022-11-20 11:11:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:04,223 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 11:11:04,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 11:11:04,225 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 11:11:04,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-20 11:11:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:04,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 11:11:04,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:11:05,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:07,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [857197588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:07,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:07,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2022-11-20 11:11:07,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830914440] [2022-11-20 11:11:07,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:07,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:11:07,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:11:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 11:11:07,230 INFO L87 Difference]: Start difference. First operand 248 states and 387 transitions. Second operand has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 states have internal predecessors, (107), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:11:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:18,021 INFO L93 Difference]: Finished difference Result 428 states and 584 transitions. [2022-11-20 11:11:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:11:18,022 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 states have internal predecessors, (107), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 127 [2022-11-20 11:11:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:18,025 INFO L225 Difference]: With dead ends: 428 [2022-11-20 11:11:18,025 INFO L226 Difference]: Without dead ends: 416 [2022-11-20 11:11:18,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=166, Invalid=2090, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 11:11:18,028 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 217 mSDsluCounter, 4299 mSDsCounter, 0 mSdLazyCounter, 5304 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 4455 SdHoareTripleChecker+Invalid, 5607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:18,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 4455 Invalid, 5607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5304 Invalid, 0 Unknown, 303 Unchecked, 9.9s Time] [2022-11-20 11:11:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-11-20 11:11:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 248. [2022-11-20 11:11:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 231 states have (on average 1.4978354978354977) internal successors, (346), 233 states have internal predecessors, (346), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (32), 11 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 11:11:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 387 transitions. [2022-11-20 11:11:18,121 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 387 transitions. Word has length 127 [2022-11-20 11:11:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:18,122 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 387 transitions. [2022-11-20 11:11:18,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 states have internal predecessors, (107), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:11:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 387 transitions. [2022-11-20 11:11:18,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 11:11:18,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:18,124 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:18,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:18,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:18,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 11:11:18,536 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:18,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1954234437, now seen corresponding path program 2 times [2022-11-20 11:11:18,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:18,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247611434] [2022-11-20 11:11:18,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:18,537 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 11:11:18,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:18,538 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:11:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 11:11:18,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:11:18,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:18,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-20 11:11:18,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:11:22,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:23,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:23,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247611434] [2022-11-20 11:11:23,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247611434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:23,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [22840218] [2022-11-20 11:11:23,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:23,415 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 11:11:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 11:11:23,416 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 11:11:23,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-20 11:11:23,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:11:23,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:23,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-20 11:11:23,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:11:24,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:24,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [22840218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:24,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:24,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2022-11-20 11:11:24,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611754871] [2022-11-20 11:11:24,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:24,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:11:24,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:24,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:11:24,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1462, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 11:11:24,718 INFO L87 Difference]: Start difference. First operand 248 states and 387 transitions. Second operand has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:11:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:36,076 INFO L93 Difference]: Finished difference Result 391 states and 541 transitions. [2022-11-20 11:11:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:11:36,077 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 128 [2022-11-20 11:11:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:36,080 INFO L225 Difference]: With dead ends: 391 [2022-11-20 11:11:36,080 INFO L226 Difference]: Without dead ends: 377 [2022-11-20 11:11:36,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=111, Invalid=1611, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 11:11:36,082 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 133 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 5454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 4215 SdHoareTripleChecker+Invalid, 5828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:36,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 4215 Invalid, 5828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5454 Invalid, 0 Unknown, 374 Unchecked, 10.7s Time] [2022-11-20 11:11:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-20 11:11:36,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 250. [2022-11-20 11:11:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 233 states have (on average 1.4935622317596566) internal successors, (348), 235 states have internal predecessors, (348), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (32), 11 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 11:11:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 389 transitions. [2022-11-20 11:11:36,181 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 389 transitions. Word has length 128 [2022-11-20 11:11:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:36,181 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 389 transitions. [2022-11-20 11:11:36,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:11:36,181 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 389 transitions. [2022-11-20 11:11:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 11:11:36,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:36,182 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:36,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:36,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-20 11:11:36,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:11:36,586 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1319664505, now seen corresponding path program 1 times [2022-11-20 11:11:36,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:36,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728555351] [2022-11-20 11:11:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:36,587 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 11:11:36,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:36,588 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:11:36,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 11:11:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 11:11:36,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:11:40,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:42,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:42,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728555351] [2022-11-20 11:11:42,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728555351] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:42,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [32065467] [2022-11-20 11:11:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:42,371 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 11:11:42,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 11:11:42,372 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 11:11:42,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-20 11:11:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:42,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 11:11:42,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:11:43,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:44,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [32065467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:44,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:44,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2022-11-20 11:11:44,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792404167] [2022-11-20 11:11:44,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:44,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:11:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:44,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:11:44,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 11:11:44,155 INFO L87 Difference]: Start difference. First operand 250 states and 389 transitions. Second operand has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:11:54,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:54,420 INFO L93 Difference]: Finished difference Result 379 states and 527 transitions. [2022-11-20 11:11:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:11:54,421 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 128 [2022-11-20 11:11:54,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:54,424 INFO L225 Difference]: With dead ends: 379 [2022-11-20 11:11:54,424 INFO L226 Difference]: Without dead ends: 365 [2022-11-20 11:11:54,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 248 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 11:11:54,426 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 128 mSDsluCounter, 3726 mSDsCounter, 0 mSdLazyCounter, 5213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 5409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:54,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 3860 Invalid, 5409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5213 Invalid, 0 Unknown, 196 Unchecked, 9.6s Time] [2022-11-20 11:11:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-20 11:11:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 248. [2022-11-20 11:11:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 231 states have (on average 1.4935064935064934) internal successors, (345), 233 states have internal predecessors, (345), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (32), 11 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 11:11:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 386 transitions. [2022-11-20 11:11:54,531 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 386 transitions. Word has length 128 [2022-11-20 11:11:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:54,531 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 386 transitions. [2022-11-20 11:11:54,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:11:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 386 transitions. [2022-11-20 11:11:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 11:11:54,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:54,533 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:54,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:54,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:54,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 11:11:54,935 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash 602401121, now seen corresponding path program 1 times [2022-11-20 11:11:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:54,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768590202] [2022-11-20 11:11:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:54,936 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 11:11:54,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:54,937 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:11:54,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 11:11:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:55,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-20 11:11:55,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:12:21,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:08,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:08,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768590202] [2022-11-20 11:13:08,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768590202] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:13:08,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246495525] [2022-11-20 11:13:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:08,188 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 11:13:08,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 11:13:08,189 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 11:13:08,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-20 11:13:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:08,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-20 11:13:08,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:15:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 16 proven. 836 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:15:10,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:15:59,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [246495525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:15:59,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:15:59,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 46] total 56 [2022-11-20 11:15:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164722546] [2022-11-20 11:15:59,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:15:59,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-20 11:15:59,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:15:59,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-20 11:15:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=4803, Unknown=30, NotChecked=0, Total=5112 [2022-11-20 11:15:59,532 INFO L87 Difference]: Start difference. First operand 248 states and 386 transitions. Second operand has 56 states, 56 states have (on average 2.375) internal successors, (133), 54 states have internal predecessors, (133), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:18:19,503 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 68 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:19:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:31,560 INFO L93 Difference]: Finished difference Result 394 states and 548 transitions. [2022-11-20 11:19:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 11:19:31,561 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.375) internal successors, (133), 54 states have internal predecessors, (133), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 129 [2022-11-20 11:19:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:31,564 INFO L225 Difference]: With dead ends: 394 [2022-11-20 11:19:31,564 INFO L226 Difference]: Without dead ends: 389 [2022-11-20 11:19:31,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 382.6s TimeCoverageRelationStatistics Valid=369, Invalid=6067, Unknown=44, NotChecked=0, Total=6480 [2022-11-20 11:19:31,567 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 155 mSDsluCounter, 4854 mSDsCounter, 0 mSdLazyCounter, 6728 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 4974 SdHoareTripleChecker+Invalid, 8460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1730 IncrementalHoareTripleChecker+Unchecked, 58.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:31,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 4974 Invalid, 8460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 6728 Invalid, 0 Unknown, 1730 Unchecked, 58.8s Time] [2022-11-20 11:19:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-20 11:19:31,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 253. [2022-11-20 11:19:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 236 states have (on average 1.4872881355932204) internal successors, (351), 238 states have internal predecessors, (351), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (32), 11 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 11:19:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 392 transitions. [2022-11-20 11:19:31,675 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 392 transitions. Word has length 129 [2022-11-20 11:19:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:31,675 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 392 transitions. [2022-11-20 11:19:31,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.375) internal successors, (133), 54 states have internal predecessors, (133), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:19:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 392 transitions. [2022-11-20 11:19:31,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 11:19:31,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:31,678 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:31,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2022-11-20 11:19:31,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-20 11:19:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:19:32,082 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:32,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash -985946781, now seen corresponding path program 1 times [2022-11-20 11:19:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:19:32,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177748719] [2022-11-20 11:19:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:32,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:19:32,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:19:32,084 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -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 11:19:32,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d1d8b7-5554-436b-b795-cd2bbae1cc7c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 11:19:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-20 11:19:32,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:20:14,801 INFO L328 TraceCheckSpWp]: Computing backward predicates...