./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 204d10239a0b36d2351863a85d337d8394fa6f65e7ffe92c9fae442e87993f63 --- 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-2329fc7 [2022-12-13 14:35:55,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:35:55,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:35:55,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:35:55,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:35:55,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:35:55,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:35:55,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:35:55,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:35:55,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:35:55,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:35:55,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:35:55,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:35:55,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:35:55,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:35:55,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:35:55,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:35:55,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:35:55,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:35:55,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:35:55,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:35:55,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:35:55,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:35:55,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:35:55,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:35:55,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:35:55,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:35:55,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:35:55,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:35:55,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:35:55,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:35:55,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:35:55,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:35:55,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:35:55,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:35:55,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:35:55,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:35:55,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:35:55,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:35:55,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:35:55,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:35:55,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 14:35:55,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:35:55,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:35:55,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:35:55,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:35:55,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:35:55,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:35:55,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:35:55,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:35:55,188 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:35:55,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:35:55,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:35:55,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:35:55,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:35:55,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:35:55,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:35:55,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:35:55,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:35:55,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:35:55,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:35:55,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:35:55,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:35:55,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:35:55,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:35:55,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:35:55,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:35:55,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:35:55,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:35:55,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:35:55,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:35:55,191 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:35:55,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:35:55,192 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:35:55,192 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 204d10239a0b36d2351863a85d337d8394fa6f65e7ffe92c9fae442e87993f63 [2022-12-13 14:35:55,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:35:55,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:35:55,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:35:55,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:35:55,408 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:35:55,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2022-12-13 14:35:57,859 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:35:58,155 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:35:58,156 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2022-12-13 14:35:58,171 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/data/1c9c7e43f/8d7e4c08815a4927962d501956def598/FLAG2adad61f0 [2022-12-13 14:35:58,435 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/data/1c9c7e43f/8d7e4c08815a4927962d501956def598 [2022-12-13 14:35:58,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:35:58,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:35:58,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:35:58,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:35:58,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:35:58,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:35:58" (1/1) ... [2022-12-13 14:35:58,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac9f1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:58, skipping insertion in model container [2022-12-13 14:35:58,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:35:58" (1/1) ... [2022-12-13 14:35:58,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:35:58,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:35:58,671 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_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1107,1120] [2022-12-13 14:35:58,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:35:58,901 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:35:58,909 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_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1107,1120] [2022-12-13 14:35:59,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:35:59,080 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:35:59,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59 WrapperNode [2022-12-13 14:35:59,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:35:59,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:35:59,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:35:59,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:35:59,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,240 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2431 [2022-12-13 14:35:59,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:35:59,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:35:59,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:35:59,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:35:59,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:35:59,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:35:59,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:35:59,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:35:59,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (1/1) ... [2022-12-13 14:35:59,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:35:59,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:35:59,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:35:59,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:35:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:35:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:35:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 14:35:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 14:35:59,731 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:35:59,733 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:38:49,862 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:38:49,867 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:38:49,867 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:38:49,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:38:49 BoogieIcfgContainer [2022-12-13 14:38:49,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:38:49,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:38:49,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:38:49,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:38:49,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:35:58" (1/3) ... [2022-12-13 14:38:49,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8c9f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:38:49, skipping insertion in model container [2022-12-13 14:38:49,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:35:59" (2/3) ... [2022-12-13 14:38:49,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8c9f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:38:49, skipping insertion in model container [2022-12-13 14:38:49,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:38:49" (3/3) ... [2022-12-13 14:38:49,875 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vsa16.c [2022-12-13 14:38:49,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:38:49,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:38:49,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:38:49,930 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;@61dd8678, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:38:49,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:38:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:38:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 14:38:49,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:38:49,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:38:49,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:38:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:38:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1810462814, now seen corresponding path program 1 times [2022-12-13 14:38:49,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:38:49,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016818048] [2022-12-13 14:38:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:38:49,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:38:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:38:50,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:38:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:38:50,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:38:50,323 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:38:50,323 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 14:38:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:38:50,328 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 14:38:50,331 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:38:50,349 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-13 14:38:50,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:38:50 BoogieIcfgContainer [2022-12-13 14:38:50,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:38:50,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:38:50,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:38:50,360 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:38:50,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:38:49" (3/4) ... [2022-12-13 14:38:50,362 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 14:38:50,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:38:50,363 INFO L158 Benchmark]: Toolchain (without parser) took 171925.46ms. Allocated memory was 165.7MB in the beginning and 876.6MB in the end (delta: 710.9MB). Free memory was 124.2MB in the beginning and 335.1MB in the end (delta: -210.9MB). Peak memory consumption was 501.3MB. Max. memory is 16.1GB. [2022-12-13 14:38:50,364 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 80.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:38:50,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 642.09ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 123.9MB in the beginning and 148.6MB in the end (delta: -24.7MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. [2022-12-13 14:38:50,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 158.80ms. Allocated memory is still 203.4MB. Free memory was 148.6MB in the beginning and 124.6MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 14:38:50,365 INFO L158 Benchmark]: Boogie Preprocessor took 114.50ms. Allocated memory is still 203.4MB. Free memory was 124.6MB in the beginning and 113.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 14:38:50,365 INFO L158 Benchmark]: RCFGBuilder took 170512.71ms. Allocated memory was 203.4MB in the beginning and 876.6MB in the end (delta: 673.2MB). Free memory was 113.1MB in the beginning and 388.6MB in the end (delta: -275.5MB). Peak memory consumption was 508.8MB. Max. memory is 16.1GB. [2022-12-13 14:38:50,366 INFO L158 Benchmark]: TraceAbstraction took 489.14ms. Allocated memory is still 876.6MB. Free memory was 387.5MB in the beginning and 335.1MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-12-13 14:38:50,366 INFO L158 Benchmark]: Witness Printer took 3.11ms. Allocated memory is still 876.6MB. Free memory is still 335.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:38:50,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 80.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 642.09ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 123.9MB in the beginning and 148.6MB in the end (delta: -24.7MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 158.80ms. Allocated memory is still 203.4MB. Free memory was 148.6MB in the beginning and 124.6MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.50ms. Allocated memory is still 203.4MB. Free memory was 124.6MB in the beginning and 113.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 170512.71ms. Allocated memory was 203.4MB in the beginning and 876.6MB in the end (delta: 673.2MB). Free memory was 113.1MB in the beginning and 388.6MB in the end (delta: -275.5MB). Peak memory consumption was 508.8MB. Max. memory is 16.1GB. * TraceAbstraction took 489.14ms. Allocated memory is still 876.6MB. Free memory was 387.5MB in the beginning and 335.1MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 3.11ms. Allocated memory is still 876.6MB. Free memory is still 335.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 340, overapproximation of bitwiseAnd at line 323. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 12); [L32] const SORT_6 msb_SORT_6 = (SORT_6)1 << (12 - 1); [L34] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 32); [L35] const SORT_11 msb_SORT_11 = (SORT_11)1 << (32 - 1); [L37] const SORT_37 mask_SORT_37 = (SORT_37)-1 >> (sizeof(SORT_37) * 8 - 3); [L38] const SORT_37 msb_SORT_37 = (SORT_37)1 << (3 - 1); [L40] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 2); [L41] const SORT_44 msb_SORT_44 = (SORT_44)1 << (2 - 1); [L43] const SORT_295 mask_SORT_295 = (SORT_295)-1 >> (sizeof(SORT_295) * 8 - 4); [L44] const SORT_295 msb_SORT_295 = (SORT_295)1 << (4 - 1); [L46] const SORT_297 mask_SORT_297 = (SORT_297)-1 >> (sizeof(SORT_297) * 8 - 5); [L47] const SORT_297 msb_SORT_297 = (SORT_297)1 << (5 - 1); [L49] const SORT_299 mask_SORT_299 = (SORT_299)-1 >> (sizeof(SORT_299) * 8 - 6); [L50] const SORT_299 msb_SORT_299 = (SORT_299)1 << (6 - 1); [L52] const SORT_301 mask_SORT_301 = (SORT_301)-1 >> (sizeof(SORT_301) * 8 - 7); [L53] const SORT_301 msb_SORT_301 = (SORT_301)1 << (7 - 1); [L55] const SORT_303 mask_SORT_303 = (SORT_303)-1 >> (sizeof(SORT_303) * 8 - 8); [L56] const SORT_303 msb_SORT_303 = (SORT_303)1 << (8 - 1); [L58] const SORT_305 mask_SORT_305 = (SORT_305)-1 >> (sizeof(SORT_305) * 8 - 9); [L59] const SORT_305 msb_SORT_305 = (SORT_305)1 << (9 - 1); [L61] const SORT_307 mask_SORT_307 = (SORT_307)-1 >> (sizeof(SORT_307) * 8 - 10); [L62] const SORT_307 msb_SORT_307 = (SORT_307)1 << (10 - 1); [L64] const SORT_309 mask_SORT_309 = (SORT_309)-1 >> (sizeof(SORT_309) * 8 - 11); [L65] const SORT_309 msb_SORT_309 = (SORT_309)1 << (11 - 1); [L67] const SORT_312 mask_SORT_312 = (SORT_312)-1 >> (sizeof(SORT_312) * 8 - 13); [L68] const SORT_312 msb_SORT_312 = (SORT_312)1 << (13 - 1); [L70] const SORT_314 mask_SORT_314 = (SORT_314)-1 >> (sizeof(SORT_314) * 8 - 14); [L71] const SORT_314 msb_SORT_314 = (SORT_314)1 << (14 - 1); [L73] const SORT_316 mask_SORT_316 = (SORT_316)-1 >> (sizeof(SORT_316) * 8 - 15); [L74] const SORT_316 msb_SORT_316 = (SORT_316)1 << (15 - 1); [L76] const SORT_533 mask_SORT_533 = (SORT_533)-1 >> (sizeof(SORT_533) * 8 - 17); [L77] const SORT_533 msb_SORT_533 = (SORT_533)1 << (17 - 1); [L79] const SORT_6 var_7 = 0; [L80] const SORT_11 var_13 = 0; [L81] const SORT_3 var_21 = 0; [L82] const SORT_1 var_26 = 0; [L83] const SORT_37 var_38 = 0; [L84] const SORT_1 var_57 = 1; [L85] const SORT_37 var_93 = 2; [L86] const SORT_37 var_97 = 1; [L87] const SORT_37 var_105 = 4; [L88] const SORT_37 var_107 = 5; [L89] const SORT_37 var_111 = 3; [L90] const SORT_6 var_128 = 2; [L91] const SORT_44 var_138 = 0; [L92] const SORT_3 var_145 = 65535; [L93] const SORT_297 var_534 = 0; [L94] const SORT_301 var_626 = 5; [L95] const SORT_301 var_630 = 4; [L96] const SORT_301 var_634 = 3; [L97] const SORT_301 var_638 = 2; [L98] const SORT_301 var_642 = 1; [L99] const SORT_301 var_646 = 0; [L101] SORT_1 input_2; [L102] SORT_3 input_4; [L103] SORT_3 input_5; [L104] SORT_6 input_114; [L105] SORT_6 input_115; [L106] SORT_6 input_116; [L107] SORT_3 input_134; [L108] SORT_3 input_135; [L109] SORT_3 input_136; [L110] SORT_3 input_144; [L111] SORT_3 input_153; [L112] SORT_3 input_154; [L113] SORT_3 input_155; [L114] SORT_3 input_158; [L115] SORT_3 input_176; [L116] SORT_3 input_177; [L117] SORT_3 input_178; [L118] SORT_3 input_181; [L119] SORT_3 input_183; [L120] SORT_44 input_197; [L121] SORT_44 input_198; [L122] SORT_44 input_199; [L123] SORT_3 input_529; [L124] SORT_3 input_530; [L125] SORT_3 input_531; [L126] SORT_3 input_532; [L127] SORT_3 input_555; [L128] SORT_3 input_557; [L129] SORT_3 input_559; [L130] SORT_3 input_563; [L131] SORT_3 input_564; [L132] SORT_3 input_565; [L133] SORT_3 input_566; [L134] SORT_3 input_585; [L135] SORT_3 input_589; [L136] SORT_3 input_591; [L137] SORT_3 input_598; [L138] SORT_3 input_600; [L139] SORT_3 input_605; [L140] SORT_3 input_607; [L141] SORT_3 input_611; [L142] SORT_3 input_612; [L143] SORT_3 input_613; [L144] SORT_3 input_614; [L145] SORT_3 input_615; [L146] SORT_3 input_616; [L147] SORT_3 input_617; [L148] SORT_3 input_618; [L149] SORT_3 input_619; [L150] SORT_3 input_620; [L151] SORT_3 input_621; [L152] SORT_3 input_622; [L153] SORT_3 input_629; [L154] SORT_3 input_633; [L155] SORT_3 input_637; [L156] SORT_3 input_641; [L157] SORT_3 input_645; [L158] SORT_3 input_650; [L159] SORT_3 input_656; [L160] SORT_3 input_658; [L161] SORT_3 input_660; [L162] SORT_3 input_662; [L163] SORT_3 input_665; [L164] SORT_3 input_671; [L165] SORT_3 input_673; [L166] SORT_3 input_675; [L167] SORT_3 input_678; [L168] SORT_3 input_684; [L169] SORT_3 input_686; [L170] SORT_3 input_689; [L171] SORT_3 input_695; [L172] SORT_3 input_698; [L173] SORT_3 input_705; [L174] SORT_3 input_710; [L175] SORT_1 input_729; [L176] SORT_1 input_730; [L177] SORT_1 input_731; [L178] SORT_1 input_732; [L179] SORT_1 input_735; [L180] SORT_1 input_737; [L181] SORT_1 input_739; [L182] SORT_1 input_744; [L183] SORT_1 input_746; [L184] SORT_1 input_751; [L185] SORT_3 input_764; [L186] SORT_3 input_765; [L187] SORT_3 input_766; [L189] SORT_6 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L190] SORT_6 state_15 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L191] SORT_3 state_22 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L192] SORT_3 state_24 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L193] SORT_3 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L194] SORT_3 state_30 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L195] SORT_37 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L196] SORT_3 state_80 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L197] SORT_3 state_82 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L198] SORT_3 state_84 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L199] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L200] SORT_3 state_88 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L201] SORT_3 state_90 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L203] SORT_6 init_9_arg_1 = var_7; [L204] state_8 = init_9_arg_1 [L205] SORT_6 init_16_arg_1 = var_7; [L206] state_15 = init_16_arg_1 [L207] SORT_3 init_23_arg_1 = var_21; [L208] state_22 = init_23_arg_1 [L209] SORT_3 init_25_arg_1 = var_21; [L210] state_24 = init_25_arg_1 [L211] SORT_3 init_29_arg_1 = var_21; [L212] state_28 = init_29_arg_1 [L213] SORT_3 init_31_arg_1 = var_21; [L214] state_30 = init_31_arg_1 [L215] SORT_37 init_40_arg_1 = var_38; [L216] state_39 = init_40_arg_1 [L217] SORT_3 init_81_arg_1 = var_21; [L218] state_80 = init_81_arg_1 [L219] SORT_3 init_83_arg_1 = var_21; [L220] state_82 = init_83_arg_1 [L221] SORT_3 init_85_arg_1 = var_21; [L222] state_84 = init_85_arg_1 [L223] SORT_1 init_87_arg_1 = var_26; [L224] state_86 = init_87_arg_1 [L225] SORT_3 init_89_arg_1 = var_21; [L226] state_88 = init_89_arg_1 [L227] SORT_3 init_91_arg_1 = var_21; [L228] state_90 = init_91_arg_1 VAL [init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_105=4, var_107=5, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_21=0, var_26=0, var_38=0, var_534=0, var_57=1, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L231] input_2 = __VERIFIER_nondet_uchar() [L232] input_4 = __VERIFIER_nondet_ushort() [L233] input_5 = __VERIFIER_nondet_ushort() [L234] input_114 = __VERIFIER_nondet_ushort() [L235] input_115 = __VERIFIER_nondet_ushort() [L236] input_116 = __VERIFIER_nondet_ushort() [L237] input_134 = __VERIFIER_nondet_ushort() [L238] input_135 = __VERIFIER_nondet_ushort() [L239] input_136 = __VERIFIER_nondet_ushort() [L240] input_144 = __VERIFIER_nondet_ushort() [L241] input_153 = __VERIFIER_nondet_ushort() [L242] input_154 = __VERIFIER_nondet_ushort() [L243] input_155 = __VERIFIER_nondet_ushort() [L244] input_158 = __VERIFIER_nondet_ushort() [L245] input_176 = __VERIFIER_nondet_ushort() [L246] input_177 = __VERIFIER_nondet_ushort() [L247] input_178 = __VERIFIER_nondet_ushort() [L248] input_181 = __VERIFIER_nondet_ushort() [L249] input_183 = __VERIFIER_nondet_ushort() [L250] input_197 = __VERIFIER_nondet_uchar() [L251] input_198 = __VERIFIER_nondet_uchar() [L252] input_199 = __VERIFIER_nondet_uchar() [L253] input_529 = __VERIFIER_nondet_ushort() [L254] input_530 = __VERIFIER_nondet_ushort() [L255] input_531 = __VERIFIER_nondet_ushort() [L256] input_532 = __VERIFIER_nondet_ushort() [L257] input_555 = __VERIFIER_nondet_ushort() [L258] input_557 = __VERIFIER_nondet_ushort() [L259] input_559 = __VERIFIER_nondet_ushort() [L260] input_563 = __VERIFIER_nondet_ushort() [L261] input_564 = __VERIFIER_nondet_ushort() [L262] input_565 = __VERIFIER_nondet_ushort() [L263] input_566 = __VERIFIER_nondet_ushort() [L264] input_585 = __VERIFIER_nondet_ushort() [L265] input_589 = __VERIFIER_nondet_ushort() [L266] input_591 = __VERIFIER_nondet_ushort() [L267] input_598 = __VERIFIER_nondet_ushort() [L268] input_600 = __VERIFIER_nondet_ushort() [L269] input_605 = __VERIFIER_nondet_ushort() [L270] input_607 = __VERIFIER_nondet_ushort() [L271] input_611 = __VERIFIER_nondet_ushort() [L272] input_612 = __VERIFIER_nondet_ushort() [L273] input_613 = __VERIFIER_nondet_ushort() [L274] input_614 = __VERIFIER_nondet_ushort() [L275] input_615 = __VERIFIER_nondet_ushort() [L276] input_616 = __VERIFIER_nondet_ushort() [L277] input_617 = __VERIFIER_nondet_ushort() [L278] input_618 = __VERIFIER_nondet_ushort() [L279] input_619 = __VERIFIER_nondet_ushort() [L280] input_620 = __VERIFIER_nondet_ushort() [L281] input_621 = __VERIFIER_nondet_ushort() [L282] input_622 = __VERIFIER_nondet_ushort() [L283] input_629 = __VERIFIER_nondet_ushort() [L284] input_633 = __VERIFIER_nondet_ushort() [L285] input_637 = __VERIFIER_nondet_ushort() [L286] input_641 = __VERIFIER_nondet_ushort() [L287] input_645 = __VERIFIER_nondet_ushort() [L288] input_650 = __VERIFIER_nondet_ushort() [L289] input_656 = __VERIFIER_nondet_ushort() [L290] input_658 = __VERIFIER_nondet_ushort() [L291] input_660 = __VERIFIER_nondet_ushort() [L292] input_662 = __VERIFIER_nondet_ushort() [L293] input_665 = __VERIFIER_nondet_ushort() [L294] input_671 = __VERIFIER_nondet_ushort() [L295] input_673 = __VERIFIER_nondet_ushort() [L296] input_675 = __VERIFIER_nondet_ushort() [L297] input_678 = __VERIFIER_nondet_ushort() [L298] input_684 = __VERIFIER_nondet_ushort() [L299] input_686 = __VERIFIER_nondet_ushort() [L300] input_689 = __VERIFIER_nondet_ushort() [L301] input_695 = __VERIFIER_nondet_ushort() [L302] input_698 = __VERIFIER_nondet_ushort() [L303] input_705 = __VERIFIER_nondet_ushort() [L304] input_710 = __VERIFIER_nondet_ushort() [L305] input_729 = __VERIFIER_nondet_uchar() [L306] input_730 = __VERIFIER_nondet_uchar() [L307] input_731 = __VERIFIER_nondet_uchar() [L308] input_732 = __VERIFIER_nondet_uchar() [L309] input_735 = __VERIFIER_nondet_uchar() [L310] input_737 = __VERIFIER_nondet_uchar() [L311] input_739 = __VERIFIER_nondet_uchar() [L312] input_744 = __VERIFIER_nondet_uchar() [L313] input_746 = __VERIFIER_nondet_uchar() [L314] input_751 = __VERIFIER_nondet_uchar() [L315] input_764 = __VERIFIER_nondet_ushort() [L316] input_765 = __VERIFIER_nondet_ushort() [L317] input_766 = __VERIFIER_nondet_ushort() [L320] SORT_6 var_10_arg_0 = state_8; [L321] SORT_1 var_10 = var_10_arg_0 >> 0; [L322] SORT_1 var_52_arg_0 = var_10; [L323] var_52_arg_0 = var_52_arg_0 & mask_SORT_1 [L324] SORT_11 var_52 = var_52_arg_0; [L325] SORT_11 var_53_arg_0 = var_52; [L326] SORT_11 var_53_arg_1 = var_13; [L327] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L328] SORT_6 var_17_arg_0 = state_15; [L329] SORT_1 var_17 = var_17_arg_0 >> 0; [L330] SORT_1 var_54_arg_0 = var_17; [L331] var_54_arg_0 = var_54_arg_0 & mask_SORT_1 [L332] SORT_11 var_54 = var_54_arg_0; [L333] SORT_11 var_55_arg_0 = var_54; [L334] SORT_11 var_55_arg_1 = var_13; [L335] SORT_1 var_55 = var_55_arg_0 == var_55_arg_1; [L336] SORT_1 var_56_arg_0 = var_53; [L337] SORT_1 var_56_arg_1 = var_55; [L338] SORT_1 var_56 = var_56_arg_0 & var_56_arg_1; [L339] SORT_1 var_58_arg_0 = var_56; [L340] SORT_1 var_58 = ~var_58_arg_0; [L341] SORT_1 var_59_arg_0 = var_57; [L342] SORT_1 var_59_arg_1 = var_58; [L343] SORT_1 var_59 = var_59_arg_0 & var_59_arg_1; [L344] var_59 = var_59 & mask_SORT_1 [L345] SORT_1 bad_60_arg_0 = var_59; VAL [bad_60_arg_0=1, init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, input_114=24, input_115=37, input_116=56, input_134=77, input_135=11, input_136=47, input_144=9, input_153=63, input_154=29, input_155=10, input_158=84, input_176=13, input_177=87, input_178=57, input_181=71, input_183=73, input_197=36, input_198=79, input_199=40, input_2=83, input_4=44, input_5=41, input_529=55, input_530=62, input_531=5, input_532=35, input_555=33, input_557=34, input_559=1, input_563=74, input_564=86, input_565=80, input_566=20, input_585=75, input_589=2, input_591=58, input_598=28, input_600=23, input_605=69, input_607=78, input_611=38, input_612=32, input_613=14, input_614=85, input_615=50, input_616=52, input_617=21, input_618=51, input_619=4, input_620=49, input_621=6, input_622=81, input_629=25, input_633=60, input_637=8, input_641=17, input_645=68, input_650=70, input_656=19, input_658=53, input_660=31, input_662=46, input_665=22, input_671=64, input_673=7, input_675=43, input_678=26, input_684=48, input_686=39, input_689=12, input_695=82, input_698=61, input_705=45, input_710=15, input_729=27, input_730=30, input_731=65, input_732=66, input_735=72, input_737=42, input_739=18, input_744=16, input_746=59, input_751=76, input_764=54, input_765=3, input_766=67, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_10=0, var_105=4, var_107=5, var_10_arg_0=0, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_17=0, var_17_arg_0=0, var_21=0, var_26=0, var_38=0, var_52=0, var_52_arg_0=0, var_53=1, var_534=0, var_53_arg_0=0, var_53_arg_1=0, var_54=0, var_54_arg_0=0, var_55=1, var_55_arg_0=0, var_55_arg_1=0, var_56=1, var_56_arg_0=1, var_56_arg_1=1, var_57=1, var_58=2, var_58_arg_0=1, var_59=1, var_59_arg_0=1, var_59_arg_1=2, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L346] CALL __VERIFIER_assert(!(bad_60_arg_0)) VAL [\old(cond)=0] [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 14:38:50,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 204d10239a0b36d2351863a85d337d8394fa6f65e7ffe92c9fae442e87993f63 --- 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-2329fc7 [2022-12-13 14:38:51,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:38:51,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:38:51,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:38:51,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:38:51,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:38:51,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:38:51,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:38:51,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:38:51,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:38:51,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:38:51,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:38:51,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:38:51,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:38:51,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:38:51,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:38:51,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:38:51,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:38:51,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:38:51,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:38:51,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:38:51,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:38:51,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:38:51,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:38:51,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:38:51,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:38:51,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:38:51,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:38:51,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:38:51,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:38:51,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:38:51,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:38:51,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:38:51,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:38:51,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:38:51,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:38:51,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:38:51,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:38:51,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:38:51,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:38:51,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:38:51,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-12-13 14:38:51,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:38:51,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:38:51,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:38:51,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:38:51,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:38:51,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:38:51,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:38:51,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:38:51,913 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:38:51,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:38:51,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:38:51,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:38:51,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:38:51,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:38:51,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:38:51,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 14:38:51,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 14:38:51,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:38:51,914 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:38:51,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:38:51,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:38:51,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:38:51,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:38:51,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:38:51,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:38:51,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:38:51,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:38:51,915 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 14:38:51,915 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 14:38:51,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:38:51,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:38:51,915 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:38:51,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:38:51,916 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 14:38:51,916 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:38:51,916 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 204d10239a0b36d2351863a85d337d8394fa6f65e7ffe92c9fae442e87993f63 [2022-12-13 14:38:52,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:38:52,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:38:52,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:38:52,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:38:52,171 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:38:52,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2022-12-13 14:38:54,739 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:38:54,964 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:38:54,964 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2022-12-13 14:38:54,977 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/data/bd6ae3181/fb93d25df8cf42788dc23f5037986c55/FLAGe168cbb4d [2022-12-13 14:38:54,988 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/data/bd6ae3181/fb93d25df8cf42788dc23f5037986c55 [2022-12-13 14:38:54,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:38:54,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:38:54,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:38:54,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:38:54,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:38:54,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:38:54" (1/1) ... [2022-12-13 14:38:54,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9012e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:54, skipping insertion in model container [2022-12-13 14:38:54,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:38:54" (1/1) ... [2022-12-13 14:38:55,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:38:55,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:38:55,162 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_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1107,1120] [2022-12-13 14:38:55,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:38:55,407 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:38:55,417 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_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1107,1120] [2022-12-13 14:38:55,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:38:55,522 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:38:55,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55 WrapperNode [2022-12-13 14:38:55,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:38:55,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:38:55,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:38:55,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:38:55,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,651 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2431 [2022-12-13 14:38:55,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:38:55,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:38:55,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:38:55,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:38:55,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:38:55,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:38:55,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:38:55,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:38:55,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (1/1) ... [2022-12-13 14:38:55,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:38:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:38:55,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:38:55,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:38:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:38:55,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:38:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 14:38:55,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 14:38:56,152 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:38:56,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:38:58,521 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:38:58,529 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:38:58,529 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:38:58,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:38:58 BoogieIcfgContainer [2022-12-13 14:38:58,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:38:58,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:38:58,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:38:58,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:38:58,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:38:54" (1/3) ... [2022-12-13 14:38:58,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc32415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:38:58, skipping insertion in model container [2022-12-13 14:38:58,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:38:55" (2/3) ... [2022-12-13 14:38:58,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc32415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:38:58, skipping insertion in model container [2022-12-13 14:38:58,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:38:58" (3/3) ... [2022-12-13 14:38:58,539 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vsa16.c [2022-12-13 14:38:58,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:38:58,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:38:58,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:38:58,591 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;@5509ee8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:38:58,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:38:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:38:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 14:38:58,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:38:58,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:38:58,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:38:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:38:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1810462814, now seen corresponding path program 1 times [2022-12-13 14:38:58,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:38:58,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194728277] [2022-12-13 14:38:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:38:58,614 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 [2022-12-13 14:38:58,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:38:58,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:38:58,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:38:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:58,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 14:38:58,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:38:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:38:59,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:38:59,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:38:59,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194728277] [2022-12-13 14:38:59,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194728277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:38:59,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:38:59,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:38:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553876645] [2022-12-13 14:38:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:38:59,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:38:59,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:38:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:38:59,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:38:59,168 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:38:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:38:59,606 INFO L93 Difference]: Finished difference Result 50 states and 77 transitions. [2022-12-13 14:38:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:38:59,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 14:38:59,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:38:59,616 INFO L225 Difference]: With dead ends: 50 [2022-12-13 14:38:59,616 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 14:38:59,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:38:59,622 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:38:59,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:38:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 14:38:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-12-13 14:38:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 14:38:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-13 14:38:59,657 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 7 [2022-12-13 14:38:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:38:59,657 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-13 14:38:59,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:38:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-13 14:38:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 14:38:59,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:38:59,658 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:38:59,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:38:59,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:38:59,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:38:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:38:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash -995691336, now seen corresponding path program 1 times [2022-12-13 14:38:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:38:59,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496351577] [2022-12-13 14:38:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:38:59,866 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 [2022-12-13 14:38:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:38:59,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:38:59,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:00,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 14:39:00,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:00,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:39:00,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:00,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496351577] [2022-12-13 14:39:00,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496351577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:39:00,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:39:00,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:39:00,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022133797] [2022-12-13 14:39:00,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:39:00,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:39:00,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:00,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:39:00,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:39:00,324 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:39:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:00,729 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-12-13 14:39:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:39:00,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-12-13 14:39:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:00,731 INFO L225 Difference]: With dead ends: 39 [2022-12-13 14:39:00,731 INFO L226 Difference]: Without dead ends: 37 [2022-12-13 14:39:00,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:39:00,733 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:00,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:39:00,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-13 14:39:00,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2022-12-13 14:39:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 14:39:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-12-13 14:39:00,739 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 13 [2022-12-13 14:39:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:00,740 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-12-13 14:39:00,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:39:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-12-13 14:39:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 14:39:00,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:00,740 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:39:00,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 14:39:00,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:39:00,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -53539184, now seen corresponding path program 1 times [2022-12-13 14:39:00,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:39:00,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591937799] [2022-12-13 14:39:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:00,947 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 [2022-12-13 14:39:00,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:39:00,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:39:00,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:01,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 14:39:01,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:39:01,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:39:01,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:01,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591937799] [2022-12-13 14:39:01,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591937799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:39:01,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:39:01,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:39:01,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639540075] [2022-12-13 14:39:01,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:39:01,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:39:01,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:01,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:39:01,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:39:01,349 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 14:39:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:01,750 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-12-13 14:39:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:39:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-13 14:39:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:01,752 INFO L225 Difference]: With dead ends: 45 [2022-12-13 14:39:01,752 INFO L226 Difference]: Without dead ends: 43 [2022-12-13 14:39:01,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:39:01,753 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:01,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:39:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-13 14:39:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-12-13 14:39:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 14:39:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-12-13 14:39:01,759 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 19 [2022-12-13 14:39:01,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:01,759 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-12-13 14:39:01,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 14:39:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-12-13 14:39:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 14:39:01,760 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:01,760 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:39:01,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 14:39:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:39:01,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:01,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1735839898, now seen corresponding path program 1 times [2022-12-13 14:39:01,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:39:01,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045418956] [2022-12-13 14:39:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:01,967 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 [2022-12-13 14:39:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:39:01,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:39:01,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:02,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-13 14:39:02,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 14:39:02,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:39:02,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:02,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045418956] [2022-12-13 14:39:02,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045418956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:39:02,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:39:02,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 14:39:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511901588] [2022-12-13 14:39:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:39:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:39:02,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:39:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:39:02,663 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 14:39:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:03,140 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-12-13 14:39:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:39:03,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-12-13 14:39:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:03,142 INFO L225 Difference]: With dead ends: 51 [2022-12-13 14:39:03,142 INFO L226 Difference]: Without dead ends: 49 [2022-12-13 14:39:03,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:39:03,143 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:03,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 154 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:39:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-13 14:39:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2022-12-13 14:39:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 14:39:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-12-13 14:39:03,152 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 25 [2022-12-13 14:39:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:03,152 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-12-13 14:39:03,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 14:39:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-12-13 14:39:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 14:39:03,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:03,153 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:39:03,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 14:39:03,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:39:03,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:03,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2127961366, now seen corresponding path program 1 times [2022-12-13 14:39:03,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:39:03,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440311860] [2022-12-13 14:39:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:03,367 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 [2022-12-13 14:39:03,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:39:03,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:39:03,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:04,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 14:39:04,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 14:39:04,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:05,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440311860] [2022-12-13 14:39:05,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440311860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1558221128] [2022-12-13 14:39:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:39:05,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:39:05,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-13 14:39:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:06,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 14:39:06,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 14:39:07,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:07,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1558221128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:07,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:39:07,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 14:39:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942789441] [2022-12-13 14:39:07,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:39:07,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:39:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:39:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:39:07,675 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 14:39:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:08,389 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2022-12-13 14:39:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:39:08,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 32 [2022-12-13 14:39:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:08,390 INFO L225 Difference]: With dead ends: 58 [2022-12-13 14:39:08,390 INFO L226 Difference]: Without dead ends: 56 [2022-12-13 14:39:08,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:39:08,391 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:08,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 89 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 14:39:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-13 14:39:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2022-12-13 14:39:08,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-13 14:39:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-12-13 14:39:08,398 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 32 [2022-12-13 14:39:08,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:08,398 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-12-13 14:39:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 14:39:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-12-13 14:39:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 14:39:08,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:08,399 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:39:08,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 14:39:08,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-13 14:39:08,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:08,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:08,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2047029104, now seen corresponding path program 2 times [2022-12-13 14:39:08,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:39:08,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082140995] [2022-12-13 14:39:08,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:39:08,806 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 [2022-12-13 14:39:08,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:39:08,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:39:08,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:09,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:39:09,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:09,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 259 conjunts are in the unsatisfiable core [2022-12-13 14:39:09,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 14:39:11,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:12,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:12,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082140995] [2022-12-13 14:39:12,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082140995] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:12,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [323385034] [2022-12-13 14:39:12,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:39:12,011 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:12,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:39:12,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:39:12,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-13 14:39:13,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:39:13,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:13,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 262 conjunts are in the unsatisfiable core [2022-12-13 14:39:13,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 14:39:15,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:15,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [323385034] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:15,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:39:15,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-12-13 14:39:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883060238] [2022-12-13 14:39:15,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:39:15,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:39:15,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:39:15,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:39:15,781 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:39:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:16,404 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2022-12-13 14:39:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:39:16,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-12-13 14:39:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:16,406 INFO L225 Difference]: With dead ends: 64 [2022-12-13 14:39:16,406 INFO L226 Difference]: Without dead ends: 62 [2022-12-13 14:39:16,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:39:16,407 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:16,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 14:39:16,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-13 14:39:16,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2022-12-13 14:39:16,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 14:39:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2022-12-13 14:39:16,415 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 38 [2022-12-13 14:39:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:16,415 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2022-12-13 14:39:16,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:39:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2022-12-13 14:39:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 14:39:16,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:16,416 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:39:16,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 14:39:16,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-12-13 14:39:16,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:16,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:16,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1813143368, now seen corresponding path program 3 times [2022-12-13 14:39:16,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:39:16,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817010472] [2022-12-13 14:39:16,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:39:16,823 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 [2022-12-13 14:39:16,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:39:16,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:39:16,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:17,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 14:39:17,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:17,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 14:39:17,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 14:39:17,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:17,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:17,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817010472] [2022-12-13 14:39:17,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817010472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:17,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1266533686] [2022-12-13 14:39:17,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:39:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:39:17,889 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:39:17,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-13 14:39:19,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 14:39:19,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:19,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 14:39:19,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 14:39:19,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:19,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1266533686] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:19,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:39:19,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-12-13 14:39:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948029315] [2022-12-13 14:39:19,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:39:19,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:39:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:39:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:39:19,735 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 14:39:20,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:20,458 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2022-12-13 14:39:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:39:20,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2022-12-13 14:39:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:20,459 INFO L225 Difference]: With dead ends: 70 [2022-12-13 14:39:20,460 INFO L226 Difference]: Without dead ends: 68 [2022-12-13 14:39:20,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:39:20,460 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:20,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 121 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 14:39:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-13 14:39:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2022-12-13 14:39:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-13 14:39:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2022-12-13 14:39:20,469 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 44 [2022-12-13 14:39:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:20,469 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2022-12-13 14:39:20,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 14:39:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2022-12-13 14:39:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 14:39:20,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:20,471 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 14:39:20,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 14:39:20,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-12-13 14:39:20,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:20,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:20,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1099634206, now seen corresponding path program 4 times [2022-12-13 14:39:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:39:20,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795862452] [2022-12-13 14:39:20,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:39:20,881 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 [2022-12-13 14:39:20,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:39:20,884 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:39:20,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:21,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:39:21,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:21,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 327 conjunts are in the unsatisfiable core [2022-12-13 14:39:21,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 14:39:24,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:25,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:25,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795862452] [2022-12-13 14:39:25,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795862452] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:25,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1887936310] [2022-12-13 14:39:25,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:39:25,453 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:39:25,454 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:39:25,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-12-13 14:39:26,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:39:26,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:26,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 333 conjunts are in the unsatisfiable core [2022-12-13 14:39:26,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 14:39:29,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:30,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1887936310] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:30,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:39:30,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2022-12-13 14:39:30,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939521324] [2022-12-13 14:39:30,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:39:30,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:39:30,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:30,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:39:30,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:39:30,281 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 14:39:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:31,252 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-12-13 14:39:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:39:31,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 50 [2022-12-13 14:39:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:31,254 INFO L225 Difference]: With dead ends: 76 [2022-12-13 14:39:31,254 INFO L226 Difference]: Without dead ends: 74 [2022-12-13 14:39:31,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:39:31,254 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 16 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:31,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 216 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 14:39:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-13 14:39:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2022-12-13 14:39:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 14:39:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2022-12-13 14:39:31,263 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 50 [2022-12-13 14:39:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:31,263 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2022-12-13 14:39:31,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 14:39:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2022-12-13 14:39:31,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 14:39:31,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:31,264 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 14:39:31,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-12-13 14:39:31,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 14:39:31,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:39:31,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:31,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash -623003810, now seen corresponding path program 5 times [2022-12-13 14:39:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:39:31,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615134894] [2022-12-13 14:39:31,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 14:39:31,672 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 [2022-12-13 14:39:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:39:31,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:39:31,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:32,893 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-13 14:39:32,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:32,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 121 conjunts are in the unsatisfiable core [2022-12-13 14:39:33,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 14:39:34,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:35,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:35,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615134894] [2022-12-13 14:39:35,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615134894] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:35,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [153715319] [2022-12-13 14:39:35,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 14:39:35,050 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:35,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:39:35,051 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:39:35,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-12-13 14:39:38,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-13 14:39:38,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:38,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 103 conjunts are in the unsatisfiable core [2022-12-13 14:39:38,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-13 14:39:39,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:39,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [153715319] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:39,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:39:39,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 19 [2022-12-13 14:39:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962070089] [2022-12-13 14:39:39,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:39:39,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 14:39:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 14:39:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2022-12-13 14:39:39,885 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 19 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2022-12-13 14:39:43,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:39:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:43,907 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2022-12-13 14:39:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:39:43,908 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) Word has length 57 [2022-12-13 14:39:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:43,908 INFO L225 Difference]: With dead ends: 82 [2022-12-13 14:39:43,908 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 14:39:43,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 14:39:43,909 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:43,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 95 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 364 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 14:39:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 14:39:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2022-12-13 14:39:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-13 14:39:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-12-13 14:39:43,920 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 57 [2022-12-13 14:39:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:43,921 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-12-13 14:39:43,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2022-12-13 14:39:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-12-13 14:39:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 14:39:43,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:43,921 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 14:39:43,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2022-12-13 14:39:44,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:44,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:39:44,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -718277704, now seen corresponding path program 6 times [2022-12-13 14:39:44,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:39:44,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902104729] [2022-12-13 14:39:44,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 14:39:44,358 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 [2022-12-13 14:39:44,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:39:44,360 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:39:44,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:39:45,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 14:39:45,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:45,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 374 conjunts are in the unsatisfiable core [2022-12-13 14:39:45,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 32 proven. 24 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-12-13 14:39:52,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:53,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:39:53,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902104729] [2022-12-13 14:39:53,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902104729] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:53,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [525630760] [2022-12-13 14:39:53,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 14:39:53,385 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:39:53,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:39:53,386 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:39:53,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-12-13 14:39:55,335 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 14:39:55,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:55,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 445 conjunts are in the unsatisfiable core [2022-12-13 14:39:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 36 proven. 41 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 14:40:04,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:40:04,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [525630760] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:04,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:40:04,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 17 [2022-12-13 14:40:04,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251743991] [2022-12-13 14:40:04,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:40:04,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 14:40:04,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:40:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 14:40:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:40:04,880 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 17 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 16 states have internal predecessors, (34), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) [2022-12-13 14:40:08,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:08,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:08,779 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-12-13 14:40:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:40:08,780 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 16 states have internal predecessors, (34), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) Word has length 63 [2022-12-13 14:40:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:08,781 INFO L225 Difference]: With dead ends: 79 [2022-12-13 14:40:08,781 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 14:40:08,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:40:08,782 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:08,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 73 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 14:40:08,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 14:40:08,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-13 14:40:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-13 14:40:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2022-12-13 14:40:08,799 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 63 [2022-12-13 14:40:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:08,799 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2022-12-13 14:40:08,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 16 states have internal predecessors, (34), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) [2022-12-13 14:40:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2022-12-13 14:40:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 14:40:08,800 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:08,800 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 14:40:08,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2022-12-13 14:40:09,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 14:40:09,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:40:09,202 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash -597897840, now seen corresponding path program 7 times [2022-12-13 14:40:09,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:40:09,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806030994] [2022-12-13 14:40:09,208 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 14:40:09,208 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 [2022-12-13 14:40:09,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:40:09,209 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:40:09,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:40:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:10,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 4250 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 14:40:10,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-12-13 14:40:10,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:40:11,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:40:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806030994] [2022-12-13 14:40:11,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806030994] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1781846413] [2022-12-13 14:40:11,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 14:40:11,118 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:40:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:40:11,119 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:40:11,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-13 14:40:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:13,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 4250 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 14:40:13,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-12-13 14:40:14,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:40:14,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1781846413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:14,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:40:14,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-12-13 14:40:14,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808284654] [2022-12-13 14:40:14,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:40:14,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 14:40:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:40:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 14:40:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:40:14,260 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 14:40:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:15,517 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2022-12-13 14:40:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:40:15,518 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 69 [2022-12-13 14:40:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:15,518 INFO L225 Difference]: With dead ends: 95 [2022-12-13 14:40:15,518 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 14:40:15,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:40:15,519 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:15,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 167 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:40:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 14:40:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2022-12-13 14:40:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 58 states have internal predecessors, (58), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 14:40:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-12-13 14:40:15,539 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 69 [2022-12-13 14:40:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:15,539 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-12-13 14:40:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 14:40:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-12-13 14:40:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 14:40:15,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:15,540 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-12-13 14:40:15,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 14:40:15,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-12-13 14:40:15,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:40:15,942 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:15,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1601458586, now seen corresponding path program 8 times [2022-12-13 14:40:15,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:40:15,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200262152] [2022-12-13 14:40:15,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:40:15,953 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 [2022-12-13 14:40:15,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:40:15,956 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:40:15,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:40:17,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:40:17,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:40:17,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 4312 conjuncts, 571 conjunts are in the unsatisfiable core [2022-12-13 14:40:17,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-13 14:40:25,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:40:26,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:40:26,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200262152] [2022-12-13 14:40:26,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200262152] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:26,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1591645730] [2022-12-13 14:40:26,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:40:26,646 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:40:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:40:26,647 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:40:26,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-13 14:40:29,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:40:29,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:40:29,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 4312 conjuncts, 578 conjunts are in the unsatisfiable core [2022-12-13 14:40:29,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-13 14:40:37,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:40:37,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1591645730] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:37,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:40:37,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-12-13 14:40:37,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631140070] [2022-12-13 14:40:37,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:40:37,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 14:40:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:40:37,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 14:40:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:40:37,872 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-13 14:40:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:39,515 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2022-12-13 14:40:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:40:39,517 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 75 [2022-12-13 14:40:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:39,517 INFO L225 Difference]: With dead ends: 101 [2022-12-13 14:40:39,517 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 14:40:39,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:40:39,518 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 16 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:39,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 287 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 14:40:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 14:40:39,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2022-12-13 14:40:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 62 states have internal predecessors, (62), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 14:40:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2022-12-13 14:40:39,541 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 75 [2022-12-13 14:40:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:39,541 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2022-12-13 14:40:39,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-13 14:40:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2022-12-13 14:40:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 14:40:39,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:39,542 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-12-13 14:40:39,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:40:39,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-12-13 14:40:39,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:40:39,944 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:39,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2049524202, now seen corresponding path program 9 times [2022-12-13 14:40:39,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:40:39,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051629506] [2022-12-13 14:40:39,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:40:39,950 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 [2022-12-13 14:40:39,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:40:39,951 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:40:39,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:40:41,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-13 14:40:41,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:40:42,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 6092 conjuncts, 100 conjunts are in the unsatisfiable core [2022-12-13 14:40:42,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 56 proven. 34 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-12-13 14:40:43,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:40:44,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:40:44,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051629506] [2022-12-13 14:40:44,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051629506] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:44,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [142022922] [2022-12-13 14:40:44,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:40:44,298 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:40:44,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:40:44,299 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:40:44,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-13 14:40:49,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-13 14:40:49,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:40:49,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 6092 conjuncts, 127 conjunts are in the unsatisfiable core [2022-12-13 14:40:49,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-12-13 14:40:50,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:40:51,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [142022922] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:51,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:40:51,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 19 [2022-12-13 14:40:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470631797] [2022-12-13 14:40:51,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:40:51,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 14:40:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:40:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 14:40:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-12-13 14:40:51,702 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 19 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-12-13 14:40:56,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:56,491 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2022-12-13 14:40:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 14:40:56,492 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 82 [2022-12-13 14:40:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:56,493 INFO L225 Difference]: With dead ends: 107 [2022-12-13 14:40:56,493 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 14:40:56,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 14:40:56,494 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 58 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:56,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 115 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 14:40:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 14:40:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 98. [2022-12-13 14:40:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 67 states have internal predecessors, (67), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 14:40:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2022-12-13 14:40:56,523 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 82 [2022-12-13 14:40:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:56,523 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2022-12-13 14:40:56,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-12-13 14:40:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2022-12-13 14:40:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 14:40:56,524 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:56,524 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-12-13 14:40:56,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:40:56,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-12-13 14:40:56,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:40:56,926 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1512669256, now seen corresponding path program 10 times [2022-12-13 14:40:56,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:40:56,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124411297] [2022-12-13 14:40:56,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:40:56,942 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 [2022-12-13 14:40:56,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:40:56,944 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:40:56,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 14:40:58,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:40:58,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:40:58,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 6244 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 14:40:58,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 28 proven. 45 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 14:40:59,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:40:59,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:40:59,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124411297] [2022-12-13 14:40:59,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124411297] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:59,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2075506515] [2022-12-13 14:40:59,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:40:59,307 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:40:59,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:40:59,307 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:40:59,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-13 14:41:03,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:41:03,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:41:03,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 6244 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 14:41:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 28 proven. 45 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 14:41:04,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:41:04,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2075506515] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:04,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:41:04,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-12-13 14:41:04,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091498262] [2022-12-13 14:41:04,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:41:04,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:41:04,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:41:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:41:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:41:04,127 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2022-12-13 14:41:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:06,204 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2022-12-13 14:41:06,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:41:06,205 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) Word has length 94 [2022-12-13 14:41:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:06,206 INFO L225 Difference]: With dead ends: 116 [2022-12-13 14:41:06,206 INFO L226 Difference]: Without dead ends: 114 [2022-12-13 14:41:06,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 182 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-12-13 14:41:06,206 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 25 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:06,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 252 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 14:41:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-13 14:41:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-12-13 14:41:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 72 states have internal predecessors, (72), 19 states have call successors, (19), 15 states have call predecessors, (19), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 14:41:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2022-12-13 14:41:06,234 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 94 [2022-12-13 14:41:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:06,235 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2022-12-13 14:41:06,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2022-12-13 14:41:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2022-12-13 14:41:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 14:41:06,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:06,236 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2022-12-13 14:41:06,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-12-13 14:41:06,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2022-12-13 14:41:06,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:41:06,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1341819106, now seen corresponding path program 11 times [2022-12-13 14:41:06,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:41:06,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470679213] [2022-12-13 14:41:06,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 14:41:06,645 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 [2022-12-13 14:41:06,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:41:06,646 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:41:06,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Waiting until timeout for monitored process [2022-12-13 14:41:08,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-12-13 14:41:08,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:41:08,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 6306 conjuncts, 190 conjunts are in the unsatisfiable core [2022-12-13 14:41:08,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 95 proven. 118 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-12-13 14:41:11,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:41:12,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:41:12,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470679213] [2022-12-13 14:41:12,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470679213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:12,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1710013025] [2022-12-13 14:41:12,796 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 14:41:12,796 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:41:12,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:41:12,797 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:41:12,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-12-13 14:41:18,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-12-13 14:41:18,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:41:18,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 6306 conjuncts, 833 conjunts are in the unsatisfiable core [2022-12-13 14:41:18,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-12-13 14:41:35,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:41:35,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1710013025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:35,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:41:35,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 27 [2022-12-13 14:41:35,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20297975] [2022-12-13 14:41:35,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:41:35,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 14:41:35,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:41:35,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 14:41:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-12-13 14:41:35,940 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 27 states, 21 states have (on average 2.380952380952381) internal successors, (50), 24 states have internal predecessors, (50), 16 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 12 states have call predecessors, (30), 14 states have call successors, (30) [2022-12-13 14:41:43,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:41:45,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:41:48,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:41:50,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:41:51,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:51,405 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2022-12-13 14:41:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 14:41:51,406 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 2.380952380952381) internal successors, (50), 24 states have internal predecessors, (50), 16 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 12 states have call predecessors, (30), 14 states have call successors, (30) Word has length 100 [2022-12-13 14:41:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:51,407 INFO L225 Difference]: With dead ends: 119 [2022-12-13 14:41:51,407 INFO L226 Difference]: Without dead ends: 117 [2022-12-13 14:41:51,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 181 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 14:41:51,407 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 59 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:51,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 282 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 861 Invalid, 4 Unknown, 0 Unchecked, 12.0s Time] [2022-12-13 14:41:51,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-13 14:41:51,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2022-12-13 14:41:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 79 states have internal predecessors, (79), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-13 14:41:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2022-12-13 14:41:51,440 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 100 [2022-12-13 14:41:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:51,440 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2022-12-13 14:41:51,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 2.380952380952381) internal successors, (50), 24 states have internal predecessors, (50), 16 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 12 states have call predecessors, (30), 14 states have call successors, (30) [2022-12-13 14:41:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2022-12-13 14:41:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 14:41:51,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:51,441 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2022-12-13 14:41:51,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2022-12-13 14:41:51,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-12-13 14:41:51,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:41:51,843 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1629763166, now seen corresponding path program 12 times [2022-12-13 14:41:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:41:51,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099765605] [2022-12-13 14:41:51,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 14:41:51,851 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 [2022-12-13 14:41:51,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:41:51,852 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 14:41:51,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Waiting until timeout for monitored process [2022-12-13 14:41:54,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-12-13 14:41:54,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:41:54,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 8058 conjuncts, 258 conjunts are in the unsatisfiable core [2022-12-13 14:41:54,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:42:18,962 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 295 DAG size of output: 275 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:42:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 94 proven. 36 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-12-13 14:42:21,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:42:24,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:42:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099765605] [2022-12-13 14:42:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099765605] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:42:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [489669403] [2022-12-13 14:42:24,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 14:42:24,306 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:42:24,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:42:24,307 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:42:24,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11a75b6-b9b2-4e22-9895-5f34ef3f1b92/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-12-13 14:42:31,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-12-13 14:42:31,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:42:31,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 8058 conjuncts, 343 conjunts are in the unsatisfiable core [2022-12-13 14:42:31,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:42:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 76 proven. 63 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-12-13 14:42:57,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:43:00,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [489669403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:43:00,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:43:00,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 24 [2022-12-13 14:43:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768139993] [2022-12-13 14:43:00,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:43:00,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 14:43:00,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:43:00,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 14:43:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=785, Unknown=5, NotChecked=0, Total=870 [2022-12-13 14:43:00,542 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 24 states, 20 states have (on average 2.5) internal successors, (50), 21 states have internal predecessors, (50), 12 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-12-13 14:43:14,074 WARN L233 SmtUtils]: Spent 13.03s on a formula simplification. DAG size of input: 382 DAG size of output: 227 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:43:23,490 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 398 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:43:29,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:43:31,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:43:36,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:43:41,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:43:46,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:43:48,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:43:50,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:43:53,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:43:58,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:00,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:05,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:09,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:12,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:14,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:16,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:18,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:20,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:22,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:23,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:26,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:28,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:30,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:33,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:44:35,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:46:15,829 WARN L233 SmtUtils]: Spent 1.64m on a formula simplification. DAG size of input: 559 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:46:50,705 WARN L233 SmtUtils]: Spent 32.35s on a formula simplification. DAG size of input: 544 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:46:53,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:46:55,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:46:57,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:48:20,565 WARN L233 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 568 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:48:23,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:48:25,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:48:27,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:48:45,849 WARN L233 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 499 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:48:47,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:48:48,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:48:51,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:49:01,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]