./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 32bit --witnessprinter.graph.data.programhash 2e745a133311e60f1a9e202bf4fcb9b524a944d790f4c1df2987f4b8dfd5e08b --- 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 18:07:03,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:07:03,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:07:03,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:07:03,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:07:03,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:07:03,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:07:03,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:07:03,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:07:03,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:07:03,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:07:03,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:07:03,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:07:03,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:07:03,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:07:03,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:07:03,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:07:03,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:07:03,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:07:03,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:07:03,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:07:03,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:07:03,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:07:03,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:07:03,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:07:03,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:07:03,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:07:03,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:07:03,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:07:03,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:07:03,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:07:03,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:07:03,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:07:03,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:07:03,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:07:03,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:07:03,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:07:03,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:07:03,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:07:03,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:07:03,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:07:03,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:07:03,328 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:07:03,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:07:03,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:07:03,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:07:03,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:07:03,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:07:03,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:07:03,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:07:03,330 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:07:03,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:07:03,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:07:03,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:07:03,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:07:03,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:07:03,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:07:03,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:07:03,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:07:03,331 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:07:03,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:07:03,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:07:03,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:07:03,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:07:03,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:07:03,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:07:03,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:07:03,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:07:03,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:07:03,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:07:03,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:07:03,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:07:03,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:07:03,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:07:03,333 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:07:03,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:07:03,333 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:07:03,333 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e745a133311e60f1a9e202bf4fcb9b524a944d790f4c1df2987f4b8dfd5e08b [2022-12-13 18:07:03,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:07:03,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:07:03,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:07:03,523 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:07:03,524 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:07:03,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c [2022-12-13 18:07:06,052 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:07:06,230 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:07:06,230 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c [2022-12-13 18:07:06,235 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/data/f18e687b3/25ed245aaeea47edaf6b4585202e62a1/FLAGfc5c5b02f [2022-12-13 18:07:06,247 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/data/f18e687b3/25ed245aaeea47edaf6b4585202e62a1 [2022-12-13 18:07:06,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:07:06,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:07:06,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:07:06,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:07:06,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:07:06,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de609a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06, skipping insertion in model container [2022-12-13 18:07:06,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:07:06,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:07:06,411 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[1995,2008] [2022-12-13 18:07:06,416 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[2389,2402] [2022-12-13 18:07:06,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:07:06,465 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:07:06,475 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[1995,2008] [2022-12-13 18:07:06,476 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[2389,2402] [2022-12-13 18:07:06,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:07:06,509 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:07:06,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06 WrapperNode [2022-12-13 18:07:06,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:07:06,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:07:06,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:07:06,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:07:06,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,547 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-12-13 18:07:06,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:07:06,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:07:06,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:07:06,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:07:06,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:07:06,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:07:06,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:07:06,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:07:06,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (1/1) ... [2022-12-13 18:07:06,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:07:06,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:06,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:07:06,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:07:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:07:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-13 18:07:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-13 18:07:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-12-13 18:07:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-12-13 18:07:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:07:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:07:06,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:07:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 18:07:06,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 18:07:06,700 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:07:06,701 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:07:07,004 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:07:07,010 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:07:07,010 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:07:07,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:07:07 BoogieIcfgContainer [2022-12-13 18:07:07,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:07:07,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:07:07,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:07:07,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:07:07,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:07:06" (1/3) ... [2022-12-13 18:07:07,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c771991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:07:07, skipping insertion in model container [2022-12-13 18:07:07,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:06" (2/3) ... [2022-12-13 18:07:07,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c771991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:07:07, skipping insertion in model container [2022-12-13 18:07:07,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:07:07" (3/3) ... [2022-12-13 18:07:07,025 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-2a.c.cil.c [2022-12-13 18:07:07,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:07:07,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 18:07:07,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:07:07,089 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;@4bc61e19, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:07:07,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 18:07:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 73 states have internal predecessors, (111), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 18:07:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 18:07:07,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:07:07,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:07,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:07:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times [2022-12-13 18:07:07,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:07,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850651109] [2022-12-13 18:07:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:07,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:07:07,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:07:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:07:07,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:07:07,217 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:07:07,218 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-13 18:07:07,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-13 18:07:07,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:07:07,223 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 18:07:07,226 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:07:07,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:07:07 BoogieIcfgContainer [2022-12-13 18:07:07,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:07:07,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:07:07,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:07:07,241 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:07:07,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:07:07" (3/4) ... [2022-12-13 18:07:07,244 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 18:07:07,244 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:07:07,245 INFO L158 Benchmark]: Toolchain (without parser) took 994.72ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 90.8MB in the beginning and 111.2MB in the end (delta: -20.4MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-12-13 18:07:07,245 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 121.6MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:07:07,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.19ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 76.7MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 18:07:07,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.65ms. Allocated memory is still 121.6MB. Free memory was 76.7MB in the beginning and 74.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:07:07,246 INFO L158 Benchmark]: Boogie Preprocessor took 34.55ms. Allocated memory is still 121.6MB. Free memory was 74.9MB in the beginning and 73.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:07:07,246 INFO L158 Benchmark]: RCFGBuilder took 428.41ms. Allocated memory is still 121.6MB. Free memory was 73.3MB in the beginning and 54.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 18:07:07,247 INFO L158 Benchmark]: TraceAbstraction took 226.42ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 53.6MB in the beginning and 111.8MB in the end (delta: -58.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:07:07,247 INFO L158 Benchmark]: Witness Printer took 3.53ms. Allocated memory is still 153.1MB. Free memory was 111.8MB in the beginning and 111.2MB in the end (delta: 636.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:07:07,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 121.6MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.19ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 76.7MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.65ms. Allocated memory is still 121.6MB. Free memory was 76.7MB in the beginning and 74.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.55ms. Allocated memory is still 121.6MB. Free memory was 74.9MB in the beginning and 73.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 428.41ms. Allocated memory is still 121.6MB. Free memory was 73.3MB in the beginning and 54.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 226.42ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 53.6MB in the beginning and 111.8MB in the end (delta: -58.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.53ms. Allocated memory is still 153.1MB. Free memory was 111.8MB in the beginning and 111.2MB in the end (delta: 636.1kB). 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 85 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=85occurred 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, 0.0s 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 18:07:07,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 32bit --witnessprinter.graph.data.programhash 2e745a133311e60f1a9e202bf4fcb9b524a944d790f4c1df2987f4b8dfd5e08b --- 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 18:07:09,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:07:09,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:07:09,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:07:09,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:07:09,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:07:09,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:07:09,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:07:09,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:07:09,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:07:09,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:07:09,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:07:09,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:07:09,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:07:09,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:07:09,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:07:09,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:07:09,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:07:09,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:07:09,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:07:09,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:07:09,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:07:09,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:07:09,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:07:09,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:07:09,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:07:09,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:07:09,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:07:09,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:07:09,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:07:09,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:07:09,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:07:09,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:07:09,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:07:09,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:07:09,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:07:09,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:07:09,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:07:09,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:07:09,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:07:09,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:07:09,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 18:07:09,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:07:09,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:07:09,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:07:09,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:07:09,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:07:09,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:07:09,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:07:09,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:07:09,237 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:07:09,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:07:09,237 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:07:09,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:07:09,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:07:09,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:07:09,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:07:09,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:07:09,238 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:07:09,238 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 18:07:09,238 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 18:07:09,238 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:07:09,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:07:09,239 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:07:09,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:07:09,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:07:09,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:07:09,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:07:09,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:07:09,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:07:09,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 18:07:09,240 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:07:09,240 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e745a133311e60f1a9e202bf4fcb9b524a944d790f4c1df2987f4b8dfd5e08b [2022-12-13 18:07:09,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:07:09,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:07:09,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:07:09,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:07:09,461 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:07:09,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c [2022-12-13 18:07:11,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:07:12,172 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:07:12,173 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c [2022-12-13 18:07:12,181 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/data/b21b0f17f/f2207ff3f1e14b02a85a2d39e810f8a2/FLAG76e65cf8d [2022-12-13 18:07:12,553 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/data/b21b0f17f/f2207ff3f1e14b02a85a2d39e810f8a2 [2022-12-13 18:07:12,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:07:12,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:07:12,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:07:12,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:07:12,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:07:12,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ace87f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12, skipping insertion in model container [2022-12-13 18:07:12,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:07:12,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:07:12,697 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[1995,2008] [2022-12-13 18:07:12,701 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[2389,2402] [2022-12-13 18:07:12,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:07:12,743 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:07:12,771 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[1995,2008] [2022-12-13 18:07:12,773 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_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[2389,2402] [2022-12-13 18:07:12,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:07:12,799 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:07:12,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12 WrapperNode [2022-12-13 18:07:12,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:07:12,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:07:12,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:07:12,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:07:12,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,827 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-12-13 18:07:12,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:07:12,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:07:12,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:07:12,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:07:12,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,848 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:07:12,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:07:12,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:07:12,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:07:12,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (1/1) ... [2022-12-13 18:07:12,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:07:12,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:12,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:07:12,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:07:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:07:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 18:07:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-13 18:07:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-13 18:07:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-12-13 18:07:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-12-13 18:07:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:07:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:07:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 18:07:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 18:07:12,980 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:07:12,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:07:15,362 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:07:15,367 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:07:15,367 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:07:15,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:07:15 BoogieIcfgContainer [2022-12-13 18:07:15,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:07:15,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:07:15,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:07:15,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:07:15,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:07:12" (1/3) ... [2022-12-13 18:07:15,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325934f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:07:15, skipping insertion in model container [2022-12-13 18:07:15,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:12" (2/3) ... [2022-12-13 18:07:15,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325934f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:07:15, skipping insertion in model container [2022-12-13 18:07:15,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:07:15" (3/3) ... [2022-12-13 18:07:15,375 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-2a.c.cil.c [2022-12-13 18:07:15,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:07:15,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 18:07:15,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:07:15,440 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;@3478f73b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:07:15,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 18:07:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 18:07:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 18:07:15,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:07:15,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:15,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:07:15,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-12-13 18:07:15,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:07:15,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127164216] [2022-12-13 18:07:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:15,466 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 18:07:15,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:07:15,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:07:15,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:07:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:15,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 18:07:15,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:15,960 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 18:07:15,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:07:15,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:07:15,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127164216] [2022-12-13 18:07:15,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127164216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:15,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:15,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:07:15,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9178195] [2022-12-13 18:07:15,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:15,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:07:15,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:07:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:07:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:07:15,987 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:07:16,008 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-12-13 18:07:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:07:16,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 18:07:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:07:16,016 INFO L225 Difference]: With dead ends: 121 [2022-12-13 18:07:16,016 INFO L226 Difference]: Without dead ends: 56 [2022-12-13 18:07:16,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:07:16,020 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:07:16,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:07:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-13 18:07:16,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-13 18:07:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 18:07:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-12-13 18:07:16,047 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-12-13 18:07:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:07:16,047 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-12-13 18:07:16,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-12-13 18:07:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 18:07:16,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:07:16,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:16,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:07:16,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:07:16,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:07:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:16,253 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-12-13 18:07:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:07:16,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945432928] [2022-12-13 18:07:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:16,258 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 18:07:16,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:07:16,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:07:16,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:08:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:12,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:08:12,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:08:27,939 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-12-13 18:09:01,625 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-12-13 18:09:03,670 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-12-13 18:09:03,670 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 18:09:03,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:09:03,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:03,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945432928] [2022-12-13 18:09:03,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945432928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:03,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:03,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:09:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261874300] [2022-12-13 18:09:03,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:03,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:09:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:09:03,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-12-13 18:09:03,674 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:06,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:09:08,283 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0)) (.cse2 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) .cse1 (or (and (or (not .cse1) (not .cse2)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse2)) .cse2 (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-12-13 18:09:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:08,524 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2022-12-13 18:09:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:09:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 18:09:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:08,526 INFO L225 Difference]: With dead ends: 56 [2022-12-13 18:09:08,526 INFO L226 Difference]: Without dead ends: 51 [2022-12-13 18:09:08,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2022-12-13 18:09:08,528 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 69 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:08,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 172 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 1 Unknown, 142 Unchecked, 2.5s Time] [2022-12-13 18:09:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-13 18:09:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-12-13 18:09:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 18:09:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-12-13 18:09:08,536 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 7 [2022-12-13 18:09:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:08,536 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-12-13 18:09:08,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:08,536 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-12-13 18:09:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 18:09:08,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:08,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:08,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:08,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:08,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1078958274, now seen corresponding path program 1 times [2022-12-13 18:09:08,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:08,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337862512] [2022-12-13 18:09:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:08,744 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 18:09:08,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:08,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:08,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:08,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:09:08,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:09:09,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:09:09,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:09,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337862512] [2022-12-13 18:09:09,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337862512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:09,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:09,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:09:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504175923] [2022-12-13 18:09:09,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:09,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:09:09,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:09,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:09:09,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:09:09,255 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 18:09:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:09,783 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-12-13 18:09:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:09:09,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-12-13 18:09:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:09,787 INFO L225 Difference]: With dead ends: 100 [2022-12-13 18:09:09,787 INFO L226 Difference]: Without dead ends: 72 [2022-12-13 18:09:09,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:09:09,789 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 20 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:09,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 425 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:09:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-13 18:09:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2022-12-13 18:09:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.297872340425532) internal successors, (61), 49 states have internal predecessors, (61), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2022-12-13 18:09:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2022-12-13 18:09:09,804 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 32 [2022-12-13 18:09:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:09,804 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2022-12-13 18:09:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 18:09:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2022-12-13 18:09:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 18:09:09,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:09,806 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:09,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Forceful destruction successful, exit code 0 [2022-12-13 18:09:10,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:10,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash 452521591, now seen corresponding path program 1 times [2022-12-13 18:09:10,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:10,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442694860] [2022-12-13 18:09:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:10,014 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 18:09:10,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:10,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:10,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:10,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:09:10,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:09:10,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:09:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:09:10,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:10,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442694860] [2022-12-13 18:09:10,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442694860] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:09:10,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:09:10,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2022-12-13 18:09:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64486210] [2022-12-13 18:09:10,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:09:10,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:09:10,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:10,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:09:10,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:09:10,984 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:09:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:11,837 INFO L93 Difference]: Finished difference Result 122 states and 160 transitions. [2022-12-13 18:09:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:09:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-12-13 18:09:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:11,839 INFO L225 Difference]: With dead ends: 122 [2022-12-13 18:09:11,839 INFO L226 Difference]: Without dead ends: 94 [2022-12-13 18:09:11,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:09:11,840 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 27 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:11,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 492 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:09:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-13 18:09:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2022-12-13 18:09:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 56 states have internal predecessors, (69), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-12-13 18:09:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-12-13 18:09:11,850 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 36 [2022-12-13 18:09:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:11,850 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-12-13 18:09:11,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:09:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-12-13 18:09:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 18:09:11,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:11,851 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:11,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:12,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:12,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:12,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1328087799, now seen corresponding path program 1 times [2022-12-13 18:09:12,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:12,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807418607] [2022-12-13 18:09:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:12,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:09:12,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:12,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:12,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:12,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:09:12,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:09:12,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:09:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:09:12,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:12,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807418607] [2022-12-13 18:09:12,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807418607] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:09:12,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:09:12,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-12-13 18:09:12,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456049380] [2022-12-13 18:09:12,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:09:12,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:09:12,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:09:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:09:12,837 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 18:09:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:13,423 INFO L93 Difference]: Finished difference Result 114 states and 149 transitions. [2022-12-13 18:09:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:09:13,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-12-13 18:09:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:13,426 INFO L225 Difference]: With dead ends: 114 [2022-12-13 18:09:13,429 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 18:09:13,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:09:13,431 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 16 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:13,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 462 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:09:13,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 18:09:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-12-13 18:09:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 63 states have internal predecessors, (76), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-12-13 18:09:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2022-12-13 18:09:13,445 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 40 [2022-12-13 18:09:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:13,446 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2022-12-13 18:09:13,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 18:09:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2022-12-13 18:09:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 18:09:13,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:13,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:13,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:13,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:13,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:13,651 INFO L85 PathProgramCache]: Analyzing trace with hash 78255138, now seen corresponding path program 2 times [2022-12-13 18:09:13,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:13,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771549633] [2022-12-13 18:09:13,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:09:13,653 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 18:09:13,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:13,657 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:13,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Waiting until timeout for monitored process [2022-12-13 18:09:13,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:09:13,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:09:13,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:09:13,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:09:14,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:09:14,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:14,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771549633] [2022-12-13 18:09:14,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771549633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:14,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:14,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:09:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947344309] [2022-12-13 18:09:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:09:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:09:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:09:14,114 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 18:09:16,504 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 18:09:16,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:16,668 INFO L93 Difference]: Finished difference Result 105 states and 134 transitions. [2022-12-13 18:09:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:09:16,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-12-13 18:09:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:16,670 INFO L225 Difference]: With dead ends: 105 [2022-12-13 18:09:16,670 INFO L226 Difference]: Without dead ends: 103 [2022-12-13 18:09:16,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:09:16,671 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 19 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:16,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 336 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 18:09:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-13 18:09:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 88. [2022-12-13 18:09:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 68 states have internal predecessors, (81), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2022-12-13 18:09:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2022-12-13 18:09:16,682 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 40 [2022-12-13 18:09:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:16,682 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2022-12-13 18:09:16,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 18:09:16,683 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2022-12-13 18:09:16,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 18:09:16,684 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:16,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:16,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Forceful destruction successful, exit code 0 [2022-12-13 18:09:16,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:16,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:16,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash 135513440, now seen corresponding path program 1 times [2022-12-13 18:09:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:16,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856180024] [2022-12-13 18:09:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:16,889 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 18:09:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:16,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:16,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:16,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:09:16,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:09:17,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:09:17,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:17,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856180024] [2022-12-13 18:09:17,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856180024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:17,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:17,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:09:17,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133316289] [2022-12-13 18:09:17,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:17,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:09:17,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:17,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:09:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:09:17,352 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 18:09:19,801 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 18:09:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:19,919 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2022-12-13 18:09:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:09:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-12-13 18:09:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:19,921 INFO L225 Difference]: With dead ends: 94 [2022-12-13 18:09:19,921 INFO L226 Difference]: Without dead ends: 92 [2022-12-13 18:09:19,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:09:19,923 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 19 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:19,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 293 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 18:09:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-13 18:09:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2022-12-13 18:09:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.234375) internal successors, (79), 66 states have internal predecessors, (79), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-12-13 18:09:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2022-12-13 18:09:19,934 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 40 [2022-12-13 18:09:19,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:19,934 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2022-12-13 18:09:19,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 18:09:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2022-12-13 18:09:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 18:09:19,935 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:19,936 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:19,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:20,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:20,136 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1165006364, now seen corresponding path program 1 times [2022-12-13 18:09:20,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:20,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112296825] [2022-12-13 18:09:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:20,137 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 18:09:20,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:20,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:20,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Waiting until timeout for monitored process [2022-12-13 18:09:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:20,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:09:20,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:09:21,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:09:21,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:21,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112296825] [2022-12-13 18:09:21,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112296825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:21,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:21,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 18:09:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042546832] [2022-12-13 18:09:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:21,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:09:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:09:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:09:21,037 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:09:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:22,746 INFO L93 Difference]: Finished difference Result 127 states and 164 transitions. [2022-12-13 18:09:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:09:22,748 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-12-13 18:09:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:22,749 INFO L225 Difference]: With dead ends: 127 [2022-12-13 18:09:22,749 INFO L226 Difference]: Without dead ends: 120 [2022-12-13 18:09:22,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:09:22,750 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 35 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:22,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 572 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:09:22,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-12-13 18:09:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2022-12-13 18:09:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 77 states have internal predecessors, (92), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (22), 16 states have call predecessors, (22), 15 states have call successors, (22) [2022-12-13 18:09:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2022-12-13 18:09:22,762 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 45 [2022-12-13 18:09:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:22,762 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2022-12-13 18:09:22,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:09:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2022-12-13 18:09:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 18:09:22,764 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:22,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:22,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:09:22,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:22,966 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1862719454, now seen corresponding path program 1 times [2022-12-13 18:09:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:22,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449269272] [2022-12-13 18:09:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:22,968 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 18:09:22,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:22,971 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:22,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:23,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:09:23,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:09:23,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:09:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:09:24,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:24,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449269272] [2022-12-13 18:09:24,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449269272] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:09:24,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:09:24,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2022-12-13 18:09:24,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801194870] [2022-12-13 18:09:24,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:09:24,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:09:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:24,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:09:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:09:24,999 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:09:26,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:26,894 INFO L93 Difference]: Finished difference Result 134 states and 172 transitions. [2022-12-13 18:09:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:09:26,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2022-12-13 18:09:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:26,898 INFO L225 Difference]: With dead ends: 134 [2022-12-13 18:09:26,898 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 18:09:26,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:09:26,899 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 54 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:26,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 662 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 18:09:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 18:09:26,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2022-12-13 18:09:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 85 states have internal predecessors, (102), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (24), 19 states have call predecessors, (24), 16 states have call successors, (24) [2022-12-13 18:09:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 143 transitions. [2022-12-13 18:09:26,912 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 143 transitions. Word has length 47 [2022-12-13 18:09:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:26,913 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 143 transitions. [2022-12-13 18:09:26,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:09:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 143 transitions. [2022-12-13 18:09:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 18:09:26,914 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:26,914 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:26,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:27,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:27,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:27,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:27,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1805461152, now seen corresponding path program 1 times [2022-12-13 18:09:27,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:27,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631848544] [2022-12-13 18:09:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:27,118 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 18:09:27,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:27,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:27,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Waiting until timeout for monitored process [2022-12-13 18:09:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:27,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 18:09:27,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 18:09:27,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:09:27,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:27,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631848544] [2022-12-13 18:09:27,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631848544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:27,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:27,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:09:27,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560344708] [2022-12-13 18:09:27,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:27,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:09:27,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:27,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:09:27,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:09:27,451 INFO L87 Difference]: Start difference. First operand 112 states and 143 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 18:09:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:27,740 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2022-12-13 18:09:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:09:27,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-12-13 18:09:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:27,743 INFO L225 Difference]: With dead ends: 120 [2022-12-13 18:09:27,743 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 18:09:27,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:09:27,744 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 6 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:27,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 314 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:09:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 18:09:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-12-13 18:09:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 81 states have internal predecessors, (95), 15 states have call successors, (15), 7 states have call predecessors, (15), 10 states have return successors, (21), 16 states have call predecessors, (21), 14 states have call successors, (21) [2022-12-13 18:09:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2022-12-13 18:09:27,755 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 47 [2022-12-13 18:09:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:27,755 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2022-12-13 18:09:27,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 18:09:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2022-12-13 18:09:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 18:09:27,756 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:27,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:27,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Forceful destruction successful, exit code 0 [2022-12-13 18:09:27,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:27,958 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2144611077, now seen corresponding path program 1 times [2022-12-13 18:09:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:27,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432774271] [2022-12-13 18:09:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:27,961 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 18:09:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:27,964 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:27,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:28,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 18:09:28,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:09:29,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:09:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:09:32,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:32,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432774271] [2022-12-13 18:09:32,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432774271] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:09:32,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:09:32,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 18:09:32,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073169312] [2022-12-13 18:09:32,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:09:32,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 18:09:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 18:09:32,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:09:32,307 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:09:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:38,736 INFO L93 Difference]: Finished difference Result 152 states and 204 transitions. [2022-12-13 18:09:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 18:09:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 49 [2022-12-13 18:09:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:38,739 INFO L225 Difference]: With dead ends: 152 [2022-12-13 18:09:38,739 INFO L226 Difference]: Without dead ends: 115 [2022-12-13 18:09:38,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=199, Invalid=1361, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 18:09:38,740 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 131 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:38,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1008 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 18:09:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-13 18:09:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2022-12-13 18:09:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 69 states have internal predecessors, (80), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2022-12-13 18:09:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2022-12-13 18:09:38,749 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 49 [2022-12-13 18:09:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:38,749 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2022-12-13 18:09:38,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:09:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2022-12-13 18:09:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 18:09:38,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:38,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:38,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:38,950 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1400781647, now seen corresponding path program 2 times [2022-12-13 18:09:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:38,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235655341] [2022-12-13 18:09:38,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:09:38,951 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 18:09:38,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:38,952 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:38,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (13)] Waiting until timeout for monitored process [2022-12-13 18:09:39,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:09:39,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:09:39,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 18:09:39,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:09:40,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:09:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:09:43,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:43,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235655341] [2022-12-13 18:09:43,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235655341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:09:43,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:09:43,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 18:09:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401653157] [2022-12-13 18:09:43,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:09:43,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 18:09:43,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:43,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 18:09:43,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:09:43,235 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:09:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:50,062 INFO L93 Difference]: Finished difference Result 127 states and 174 transitions. [2022-12-13 18:09:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 18:09:50,064 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 49 [2022-12-13 18:09:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:50,065 INFO L225 Difference]: With dead ends: 127 [2022-12-13 18:09:50,065 INFO L226 Difference]: Without dead ends: 116 [2022-12-13 18:09:50,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 18:09:50,067 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 161 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:50,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1072 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 18:09:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-12-13 18:09:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2022-12-13 18:09:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 70 states have internal predecessors, (81), 13 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) [2022-12-13 18:09:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2022-12-13 18:09:50,078 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 49 [2022-12-13 18:09:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:50,079 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2022-12-13 18:09:50,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:09:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2022-12-13 18:09:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 18:09:50,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:50,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:50,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (13)] Ended with exit code 0 [2022-12-13 18:09:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:50,281 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:09:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1227181886, now seen corresponding path program 1 times [2022-12-13 18:09:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:09:50,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625176033] [2022-12-13 18:09:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:50,284 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 18:09:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:09:50,287 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:50,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:09:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:50,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:09:50,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:09:55,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:09:55,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:09:55,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625176033] [2022-12-13 18:09:55,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625176033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:55,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:55,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:09:55,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149264792] [2022-12-13 18:09:55,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:55,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:09:55,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:09:55,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:09:55,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=36, Unknown=2, NotChecked=0, Total=56 [2022-12-13 18:09:55,878 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 18:09:57,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:09:59,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:10:01,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:10:03,582 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 18:10:03,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:10:03,914 INFO L93 Difference]: Finished difference Result 103 states and 141 transitions. [2022-12-13 18:10:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:10:03,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-12-13 18:10:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:10:03,917 INFO L225 Difference]: With dead ends: 103 [2022-12-13 18:10:03,917 INFO L226 Difference]: Without dead ends: 101 [2022-12-13 18:10:03,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=22, Invalid=48, Unknown=2, NotChecked=0, Total=72 [2022-12-13 18:10:03,917 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 13 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:10:03,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 360 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-12-13 18:10:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-13 18:10:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2022-12-13 18:10:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 74 states have internal predecessors, (84), 14 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (28), 13 states have call predecessors, (28), 13 states have call successors, (28) [2022-12-13 18:10:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-12-13 18:10:03,928 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 126 transitions. Word has length 50 [2022-12-13 18:10:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:10:03,929 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-12-13 18:10:03,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 18:10:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 126 transitions. [2022-12-13 18:10:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 18:10:03,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:10:03,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:10:03,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:10:04,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:04,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:10:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash 792222103, now seen corresponding path program 1 times [2022-12-13 18:10:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:10:04,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728316104] [2022-12-13 18:10:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:04,134 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 18:10:04,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:10:04,136 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:04,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (15)] Waiting until timeout for monitored process [2022-12-13 18:10:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:04,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:10:04,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:10:04,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:10:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:10:06,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:10:06,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728316104] [2022-12-13 18:10:06,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728316104] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:10:06,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:10:06,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-12-13 18:10:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831434935] [2022-12-13 18:10:06,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:10:06,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 18:10:06,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:10:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:10:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:10:06,698 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:10:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:10:09,204 INFO L93 Difference]: Finished difference Result 130 states and 180 transitions. [2022-12-13 18:10:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:10:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 51 [2022-12-13 18:10:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:10:09,208 INFO L225 Difference]: With dead ends: 130 [2022-12-13 18:10:09,208 INFO L226 Difference]: Without dead ends: 119 [2022-12-13 18:10:09,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-12-13 18:10:09,210 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 82 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:10:09,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 683 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 18:10:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-13 18:10:09,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 97. [2022-12-13 18:10:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 77 states have internal predecessors, (86), 14 states have call successors, (14), 6 states have call predecessors, (14), 11 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31) [2022-12-13 18:10:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 131 transitions. [2022-12-13 18:10:09,224 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 131 transitions. Word has length 51 [2022-12-13 18:10:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:10:09,224 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 131 transitions. [2022-12-13 18:10:09,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:10:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 131 transitions. [2022-12-13 18:10:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 18:10:09,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:10:09,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:10:09,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (15)] Ended with exit code 0 [2022-12-13 18:10:09,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:09,430 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:10:09,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1615591569, now seen corresponding path program 1 times [2022-12-13 18:10:09,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:10:09,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470455110] [2022-12-13 18:10:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:09,433 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 18:10:09,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:10:09,436 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:09,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:09,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:10:09,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 18:10:10,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:10:10,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:10:10,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470455110] [2022-12-13 18:10:10,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470455110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:10:10,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:10:10,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:10:10,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790778601] [2022-12-13 18:10:10,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:10:10,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:10:10,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:10:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:10:10,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:10:10,060 INFO L87 Difference]: Start difference. First operand 97 states and 131 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 18:10:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:10:10,932 INFO L93 Difference]: Finished difference Result 160 states and 203 transitions. [2022-12-13 18:10:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:10:10,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2022-12-13 18:10:10,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:10:10,933 INFO L225 Difference]: With dead ends: 160 [2022-12-13 18:10:10,933 INFO L226 Difference]: Without dead ends: 92 [2022-12-13 18:10:10,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:10:10,934 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 14 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:10:10,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 509 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:10:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-13 18:10:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2022-12-13 18:10:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 71 states have internal predecessors, (80), 13 states have call successors, (13), 5 states have call predecessors, (13), 10 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) [2022-12-13 18:10:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-12-13 18:10:10,943 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 55 [2022-12-13 18:10:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:10:10,943 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-12-13 18:10:10,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 18:10:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-12-13 18:10:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 18:10:10,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:10:10,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:10:10,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:11,145 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:10:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash 381005423, now seen corresponding path program 1 times [2022-12-13 18:10:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:10:11,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151729237] [2022-12-13 18:10:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:11,146 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 18:10:11,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:10:11,146 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:11,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (17)] Waiting until timeout for monitored process [2022-12-13 18:10:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:11,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:10:11,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:10:16,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:10:16,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:10:16,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151729237] [2022-12-13 18:10:16,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151729237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:10:16,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:10:16,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:10:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210880429] [2022-12-13 18:10:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:10:16,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:10:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:10:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:10:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2022-12-13 18:10:16,137 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 18:10:20,733 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 18:10:22,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:10:24,733 WARN L539 Checker$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 18:10:27,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:10:29,587 WARN L539 Checker$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 18:10:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:10:29,719 INFO L93 Difference]: Finished difference Result 99 states and 134 transitions. [2022-12-13 18:10:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:10:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-12-13 18:10:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:10:29,721 INFO L225 Difference]: With dead ends: 99 [2022-12-13 18:10:29,721 INFO L226 Difference]: Without dead ends: 95 [2022-12-13 18:10:29,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2022-12-13 18:10:29,721 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 16 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:10:29,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 359 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2022-12-13 18:10:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-13 18:10:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2022-12-13 18:10:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.21875) internal successors, (78), 68 states have internal predecessors, (78), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2022-12-13 18:10:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 118 transitions. [2022-12-13 18:10:29,734 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 118 transitions. Word has length 51 [2022-12-13 18:10:29,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:10:29,734 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 118 transitions. [2022-12-13 18:10:29,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 18:10:29,734 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 118 transitions. [2022-12-13 18:10:29,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 18:10:29,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:10:29,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:10:29,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (17)] Forceful destruction successful, exit code 0 [2022-12-13 18:10:29,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:29,936 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:10:29,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:29,937 INFO L85 PathProgramCache]: Analyzing trace with hash 57968830, now seen corresponding path program 1 times [2022-12-13 18:10:29,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:10:29,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048698535] [2022-12-13 18:10:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:29,938 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 18:10:29,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:10:29,941 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:29,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:30,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:10:30,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:10:30,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:10:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:10:31,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:10:31,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048698535] [2022-12-13 18:10:31,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048698535] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:10:31,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:10:31,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-12-13 18:10:31,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100023053] [2022-12-13 18:10:31,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:10:31,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:10:31,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:10:31,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:10:31,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:10:31,572 INFO L87 Difference]: Start difference. First operand 86 states and 118 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:10:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:10:32,709 INFO L93 Difference]: Finished difference Result 112 states and 164 transitions. [2022-12-13 18:10:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:10:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-12-13 18:10:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:10:32,712 INFO L225 Difference]: With dead ends: 112 [2022-12-13 18:10:32,712 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 18:10:32,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:10:32,713 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 109 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:10:32,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 439 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:10:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 18:10:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2022-12-13 18:10:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 12 states have call successors, (12), 5 states have call predecessors, (12), 10 states have return successors, (31), 12 states have call predecessors, (31), 11 states have call successors, (31) [2022-12-13 18:10:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2022-12-13 18:10:32,724 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 55 [2022-12-13 18:10:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:10:32,725 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2022-12-13 18:10:32,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:10:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2022-12-13 18:10:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 18:10:32,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:10:32,726 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:10:32,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:32,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:32,927 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:10:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:32,928 INFO L85 PathProgramCache]: Analyzing trace with hash -768011691, now seen corresponding path program 1 times [2022-12-13 18:10:32,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:10:32,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33500300] [2022-12-13 18:10:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:32,930 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 18:10:32,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:10:32,933 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:32,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Waiting until timeout for monitored process [2022-12-13 18:10:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:33,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:10:33,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:10:33,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:10:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:10:34,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:10:34,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33500300] [2022-12-13 18:10:34,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33500300] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:10:34,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:10:34,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-12-13 18:10:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663536036] [2022-12-13 18:10:34,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:10:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:10:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:10:34,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:10:34,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:10:34,798 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:10:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:10:36,174 INFO L93 Difference]: Finished difference Result 112 states and 162 transitions. [2022-12-13 18:10:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:10:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2022-12-13 18:10:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:10:36,176 INFO L225 Difference]: With dead ends: 112 [2022-12-13 18:10:36,176 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 18:10:36,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:10:36,177 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 86 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:10:36,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 505 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 18:10:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 18:10:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2022-12-13 18:10:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 12 states have call successors, (12), 5 states have call predecessors, (12), 10 states have return successors, (30), 12 states have call predecessors, (30), 11 states have call successors, (30) [2022-12-13 18:10:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-12-13 18:10:36,191 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 64 [2022-12-13 18:10:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:10:36,191 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-12-13 18:10:36,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:10:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-12-13 18:10:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 18:10:36,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:10:36,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:10:36,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:10:36,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:36,394 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:10:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash -773215852, now seen corresponding path program 1 times [2022-12-13 18:10:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:10:36,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610522780] [2022-12-13 18:10:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:36,397 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 18:10:36,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:10:36,399 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:36,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:36,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:10:36,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:10:37,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:10:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:10:38,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:10:38,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610522780] [2022-12-13 18:10:38,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610522780] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:10:38,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:10:38,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-12-13 18:10:38,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779509773] [2022-12-13 18:10:38,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:10:38,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:10:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:10:38,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:10:38,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:10:38,178 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:10:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:10:39,302 INFO L93 Difference]: Finished difference Result 110 states and 154 transitions. [2022-12-13 18:10:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:10:39,303 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2022-12-13 18:10:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:10:39,305 INFO L225 Difference]: With dead ends: 110 [2022-12-13 18:10:39,305 INFO L226 Difference]: Without dead ends: 96 [2022-12-13 18:10:39,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:10:39,306 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 109 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:10:39,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 481 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:10:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-13 18:10:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2022-12-13 18:10:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.203125) internal successors, (77), 68 states have internal predecessors, (77), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (27), 12 states have call predecessors, (27), 11 states have call successors, (27) [2022-12-13 18:10:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2022-12-13 18:10:39,324 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 64 [2022-12-13 18:10:39,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:10:39,325 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2022-12-13 18:10:39,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:10:39,325 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2022-12-13 18:10:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 18:10:39,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:10:39,327 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:10:39,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:10:39,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:39,528 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:10:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash 336770129, now seen corresponding path program 1 times [2022-12-13 18:10:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:10:39,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11616228] [2022-12-13 18:10:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:39,531 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 18:10:39,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:10:39,533 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:39,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Waiting until timeout for monitored process [2022-12-13 18:10:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:39,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:10:39,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:10:40,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:10:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:10:41,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:10:41,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11616228] [2022-12-13 18:10:41,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11616228] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:10:41,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:10:41,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-12-13 18:10:41,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138218934] [2022-12-13 18:10:41,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:10:41,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:10:41,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:10:41,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:10:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:10:41,383 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:10:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:10:42,600 INFO L93 Difference]: Finished difference Result 107 states and 148 transitions. [2022-12-13 18:10:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:10:42,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-12-13 18:10:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:10:42,603 INFO L225 Difference]: With dead ends: 107 [2022-12-13 18:10:42,603 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 18:10:42,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:10:42,604 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 78 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:10:42,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 531 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:10:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 18:10:42,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2022-12-13 18:10:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 65 states have internal predecessors, (74), 12 states have call successors, (12), 5 states have call predecessors, (12), 8 states have return successors, (25), 12 states have call predecessors, (25), 11 states have call successors, (25) [2022-12-13 18:10:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2022-12-13 18:10:42,615 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 66 [2022-12-13 18:10:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:10:42,615 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2022-12-13 18:10:42,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:10:42,616 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2022-12-13 18:10:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 18:10:42,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:10:42,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:10:42,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:10:42,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:42,818 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:10:42,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:42,819 INFO L85 PathProgramCache]: Analyzing trace with hash -644666623, now seen corresponding path program 1 times [2022-12-13 18:10:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:10:42,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926865927] [2022-12-13 18:10:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:42,821 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 18:10:42,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:10:42,824 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:42,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:10:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:42,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:10:42,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 18:10:47,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:10:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 18:10:54,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:10:54,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926865927] [2022-12-13 18:10:54,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926865927] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:10:54,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:10:54,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-12-13 18:10:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026683992] [2022-12-13 18:10:54,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:10:54,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 18:10:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:10:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 18:10:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-12-13 18:10:54,163 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:11:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:11:06,798 INFO L93 Difference]: Finished difference Result 121 states and 174 transitions. [2022-12-13 18:11:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:11:06,799 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 73 [2022-12-13 18:11:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:11:06,800 INFO L225 Difference]: With dead ends: 121 [2022-12-13 18:11:06,800 INFO L226 Difference]: Without dead ends: 112 [2022-12-13 18:11:06,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 18:11:06,801 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 203 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:11:06,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1122 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 18:11:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-13 18:11:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 95. [2022-12-13 18:11:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.2) internal successors, (84), 75 states have internal predecessors, (84), 14 states have call successors, (14), 5 states have call predecessors, (14), 10 states have return successors, (40), 14 states have call predecessors, (40), 13 states have call successors, (40) [2022-12-13 18:11:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 138 transitions. [2022-12-13 18:11:06,814 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 138 transitions. Word has length 73 [2022-12-13 18:11:06,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:11:06,814 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 138 transitions. [2022-12-13 18:11:06,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:11:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 138 transitions. [2022-12-13 18:11:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 18:11:06,816 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:11:06,816 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:11:06,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:11:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:11:07,017 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:11:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:11:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash -719396020, now seen corresponding path program 1 times [2022-12-13 18:11:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:11:07,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874349624] [2022-12-13 18:11:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:11:07,018 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 18:11:07,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:11:07,019 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:11:07,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Waiting until timeout for monitored process [2022-12-13 18:11:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:11:07,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 18:11:07,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:11:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 18:11:08,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:11:08,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:11:08,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874349624] [2022-12-13 18:11:08,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874349624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:11:08,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:11:08,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:11:08,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961281842] [2022-12-13 18:11:08,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:11:08,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:11:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:11:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:11:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:11:08,688 INFO L87 Difference]: Start difference. First operand 95 states and 138 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:11:10,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:11:10,721 INFO L93 Difference]: Finished difference Result 116 states and 166 transitions. [2022-12-13 18:11:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:11:10,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 73 [2022-12-13 18:11:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:11:10,723 INFO L225 Difference]: With dead ends: 116 [2022-12-13 18:11:10,723 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 18:11:10,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:11:10,724 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 47 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:11:10,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 516 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:11:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 18:11:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2022-12-13 18:11:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 79 states have internal predecessors, (87), 15 states have call successors, (15), 5 states have call predecessors, (15), 11 states have return successors, (44), 15 states have call predecessors, (44), 14 states have call successors, (44) [2022-12-13 18:11:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 146 transitions. [2022-12-13 18:11:10,738 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 146 transitions. Word has length 73 [2022-12-13 18:11:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:11:10,739 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 146 transitions. [2022-12-13 18:11:10,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:11:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 146 transitions. [2022-12-13 18:11:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 18:11:10,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:11:10,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:11:10,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:11:10,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:11:10,941 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:11:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:11:10,942 INFO L85 PathProgramCache]: Analyzing trace with hash -425811905, now seen corresponding path program 1 times [2022-12-13 18:11:10,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:11:10,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324676380] [2022-12-13 18:11:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:11:10,943 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 18:11:10,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:11:10,944 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:11:10,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:11:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:11:11,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:11:11,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:11:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 18:11:14,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:11:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 18:11:21,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:11:21,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324676380] [2022-12-13 18:11:21,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324676380] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:11:21,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:11:21,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2022-12-13 18:11:21,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273314028] [2022-12-13 18:11:21,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:11:21,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:11:21,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:11:21,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:11:21,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:11:21,347 INFO L87 Difference]: Start difference. First operand 100 states and 146 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:11:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:11:38,652 INFO L93 Difference]: Finished difference Result 167 states and 236 transitions. [2022-12-13 18:11:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 18:11:38,655 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 73 [2022-12-13 18:11:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:11:38,656 INFO L225 Difference]: With dead ends: 167 [2022-12-13 18:11:38,656 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 18:11:38,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=485, Invalid=2167, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 18:11:38,657 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 198 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:11:38,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1052 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-12-13 18:11:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 18:11:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2022-12-13 18:11:38,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.180722891566265) internal successors, (98), 88 states have internal predecessors, (98), 17 states have call successors, (17), 6 states have call predecessors, (17), 11 states have return successors, (49), 17 states have call predecessors, (49), 16 states have call successors, (49) [2022-12-13 18:11:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 164 transitions. [2022-12-13 18:11:38,680 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 164 transitions. Word has length 73 [2022-12-13 18:11:38,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:11:38,680 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 164 transitions. [2022-12-13 18:11:38,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:11:38,680 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 164 transitions. [2022-12-13 18:11:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 18:11:38,681 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:11:38,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:11:38,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:11:38,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:11:38,882 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:11:38,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:11:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1804933507, now seen corresponding path program 2 times [2022-12-13 18:11:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:11:38,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947049632] [2022-12-13 18:11:38,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:11:38,885 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 18:11:38,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:11:38,888 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:11:38,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Waiting until timeout for monitored process [2022-12-13 18:11:38,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:11:38,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:11:38,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:11:38,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:11:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 18:11:41,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:11:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 18:11:49,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:11:49,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947049632] [2022-12-13 18:11:49,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947049632] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:11:49,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:11:49,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2022-12-13 18:11:49,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378453679] [2022-12-13 18:11:49,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:11:49,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:11:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:11:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:11:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:11:49,174 INFO L87 Difference]: Start difference. First operand 112 states and 164 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:12:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:12:08,432 INFO L93 Difference]: Finished difference Result 179 states and 246 transitions. [2022-12-13 18:12:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 18:12:08,435 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 73 [2022-12-13 18:12:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:12:08,436 INFO L225 Difference]: With dead ends: 179 [2022-12-13 18:12:08,436 INFO L226 Difference]: Without dead ends: 139 [2022-12-13 18:12:08,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 18:12:08,437 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 255 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:12:08,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1028 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-12-13 18:12:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-13 18:12:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 122. [2022-12-13 18:12:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 92 states have (on average 1.173913043478261) internal successors, (108), 96 states have internal predecessors, (108), 18 states have call successors, (18), 7 states have call predecessors, (18), 11 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) [2022-12-13 18:12:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 172 transitions. [2022-12-13 18:12:08,456 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 172 transitions. Word has length 73 [2022-12-13 18:12:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:12:08,456 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 172 transitions. [2022-12-13 18:12:08,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:12:08,456 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 172 transitions. [2022-12-13 18:12:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 18:12:08,457 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:12:08,457 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:12:08,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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)] Ended with exit code 0 [2022-12-13 18:12:08,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:08,658 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:12:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:12:08,659 INFO L85 PathProgramCache]: Analyzing trace with hash 555904934, now seen corresponding path program 1 times [2022-12-13 18:12:08,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:12:08,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502543111] [2022-12-13 18:12:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:12:08,661 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 18:12:08,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:12:08,663 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:08,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:12:08,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:12:08,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:12:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 18:12:09,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:12:09,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:12:09,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502543111] [2022-12-13 18:12:09,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502543111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:12:09,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:12:09,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:12:09,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098750966] [2022-12-13 18:12:09,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:12:09,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:12:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:12:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:12:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:12:09,432 INFO L87 Difference]: Start difference. First operand 122 states and 172 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:12:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:12:09,951 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2022-12-13 18:12:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:12:09,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2022-12-13 18:12:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:12:09,953 INFO L225 Difference]: With dead ends: 136 [2022-12-13 18:12:09,953 INFO L226 Difference]: Without dead ends: 127 [2022-12-13 18:12:09,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:12:09,954 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 7 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:12:09,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 419 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:12:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-13 18:12:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2022-12-13 18:12:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 92 states have (on average 1.173913043478261) internal successors, (108), 96 states have internal predecessors, (108), 18 states have call successors, (18), 7 states have call predecessors, (18), 11 states have return successors, (44), 18 states have call predecessors, (44), 17 states have call successors, (44) [2022-12-13 18:12:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2022-12-13 18:12:09,978 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 75 [2022-12-13 18:12:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:12:09,978 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2022-12-13 18:12:09,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:12:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2022-12-13 18:12:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 18:12:09,979 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:12:09,980 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:12:09,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:10,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:10,180 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:12:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:12:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash 481175537, now seen corresponding path program 1 times [2022-12-13 18:12:10,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:12:10,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176591041] [2022-12-13 18:12:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:12:10,181 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 18:12:10,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:12:10,181 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:10,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (27)] Waiting until timeout for monitored process [2022-12-13 18:12:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:12:10,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:12:10,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:12:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 18:12:13,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:12:15,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:12:15,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176591041] [2022-12-13 18:12:15,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176591041] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:12:15,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [655771184] [2022-12-13 18:12:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:12:15,641 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 18:12:15,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 18:12:15,643 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 18:12:15,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-12-13 18:12:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:12:15,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:12:15,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:12:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 18:12:16,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:12:16,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [655771184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:12:16,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:12:16,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-12-13 18:12:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832206951] [2022-12-13 18:12:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:12:16,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:12:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:12:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:12:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:12:16,937 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:12:17,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:12:17,314 INFO L93 Difference]: Finished difference Result 149 states and 217 transitions. [2022-12-13 18:12:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:12:17,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 75 [2022-12-13 18:12:17,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:12:17,317 INFO L225 Difference]: With dead ends: 149 [2022-12-13 18:12:17,317 INFO L226 Difference]: Without dead ends: 138 [2022-12-13 18:12:17,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:12:17,318 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 22 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:12:17,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 286 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:12:17,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-13 18:12:17,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2022-12-13 18:12:17,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 101 states have internal predecessors, (112), 20 states have call successors, (20), 7 states have call predecessors, (20), 12 states have return successors, (50), 20 states have call predecessors, (50), 19 states have call successors, (50) [2022-12-13 18:12:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 182 transitions. [2022-12-13 18:12:17,342 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 182 transitions. Word has length 75 [2022-12-13 18:12:17,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:12:17,342 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 182 transitions. [2022-12-13 18:12:17,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:12:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 182 transitions. [2022-12-13 18:12:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 18:12:17,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:12:17,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:12:17,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2022-12-13 18:12:17,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (27)] Ended with exit code 0 [2022-12-13 18:12:17,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:17,745 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:12:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:12:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash 700030255, now seen corresponding path program 1 times [2022-12-13 18:12:17,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:12:17,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158471352] [2022-12-13 18:12:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:12:17,747 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 18:12:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:12:17,750 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:17,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (29)] Waiting until timeout for monitored process [2022-12-13 18:12:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:12:17,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:12:17,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:12:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 18:12:20,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:12:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 18:12:28,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:12:28,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158471352] [2022-12-13 18:12:28,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158471352] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:12:28,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:12:28,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2022-12-13 18:12:28,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889192318] [2022-12-13 18:12:28,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:12:28,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:12:28,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:12:28,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:12:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:12:28,609 INFO L87 Difference]: Start difference. First operand 129 states and 182 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:12:39,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:12:39,813 INFO L93 Difference]: Finished difference Result 161 states and 217 transitions. [2022-12-13 18:12:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:12:39,814 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 75 [2022-12-13 18:12:39,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:12:39,815 INFO L225 Difference]: With dead ends: 161 [2022-12-13 18:12:39,816 INFO L226 Difference]: Without dead ends: 141 [2022-12-13 18:12:39,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=381, Invalid=1511, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 18:12:39,817 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 132 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:12:39,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1085 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 18:12:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-13 18:12:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2022-12-13 18:12:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 98 states have (on average 1.163265306122449) internal successors, (114), 102 states have internal predecessors, (114), 20 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (45), 20 states have call predecessors, (45), 19 states have call successors, (45) [2022-12-13 18:12:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2022-12-13 18:12:39,842 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 75 [2022-12-13 18:12:39,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:12:39,842 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2022-12-13 18:12:39,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:12:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2022-12-13 18:12:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 18:12:39,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:12:39,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:12:39,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (29)] Ended with exit code 0 [2022-12-13 18:12:40,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:40,045 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:12:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:12:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 904822259, now seen corresponding path program 2 times [2022-12-13 18:12:40,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:12:40,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125406144] [2022-12-13 18:12:40,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:12:40,048 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 18:12:40,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:12:40,050 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:12:40,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (30)] Waiting until timeout for monitored process [2022-12-13 18:12:40,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:12:40,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:12:40,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:12:40,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:12:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 18:12:43,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:12:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 18:12:50,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:12:50,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125406144] [2022-12-13 18:12:50,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125406144] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:12:50,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:12:50,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2022-12-13 18:12:50,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449973615] [2022-12-13 18:12:50,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:12:50,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:12:50,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:12:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:12:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:12:50,445 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:13:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:01,903 INFO L93 Difference]: Finished difference Result 163 states and 214 transitions. [2022-12-13 18:13:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 18:13:01,905 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 75 [2022-12-13 18:13:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:13:01,906 INFO L225 Difference]: With dead ends: 163 [2022-12-13 18:13:01,906 INFO L226 Difference]: Without dead ends: 149 [2022-12-13 18:13:01,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 18:13:01,910 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 212 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:13:01,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 715 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 18:13:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-13 18:13:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 139. [2022-12-13 18:13:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 105 states have (on average 1.161904761904762) internal successors, (122), 108 states have internal predecessors, (122), 21 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (43), 21 states have call predecessors, (43), 20 states have call successors, (43) [2022-12-13 18:13:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-12-13 18:13:01,947 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 75 [2022-12-13 18:13:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:13:01,948 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-12-13 18:13:01,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:13:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2022-12-13 18:13:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 18:13:01,949 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:13:01,949 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:01,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (30)] Ended with exit code 0 [2022-12-13 18:13:02,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:13:02,151 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:13:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:02,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1627177794, now seen corresponding path program 1 times [2022-12-13 18:13:02,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:13:02,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054939692] [2022-12-13 18:13:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:02,154 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 18:13:02,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:13:02,156 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:13:02,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (31)] Waiting until timeout for monitored process [2022-12-13 18:13:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:02,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 18:13:02,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:13:09,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:13:31,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:13:31,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054939692] [2022-12-13 18:13:31,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054939692] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:31,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:13:31,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2022-12-13 18:13:31,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033198733] [2022-12-13 18:13:31,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:31,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-13 18:13:31,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:13:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-13 18:13:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 18:13:31,931 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:13:37,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:13:38,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:14:03,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:14:05,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:14:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:14:20,887 INFO L93 Difference]: Finished difference Result 170 states and 219 transitions. [2022-12-13 18:14:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 18:14:20,889 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) Word has length 82 [2022-12-13 18:14:20,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:14:20,890 INFO L225 Difference]: With dead ends: 170 [2022-12-13 18:14:20,890 INFO L226 Difference]: Without dead ends: 157 [2022-12-13 18:14:20,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=787, Invalid=5065, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 18:14:20,892 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 221 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:14:20,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1199 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time] [2022-12-13 18:14:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-12-13 18:14:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2022-12-13 18:14:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 107 states have (on average 1.158878504672897) internal successors, (124), 109 states have internal predecessors, (124), 21 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (41), 22 states have call predecessors, (41), 20 states have call successors, (41) [2022-12-13 18:14:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2022-12-13 18:14:20,941 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 82 [2022-12-13 18:14:20,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:14:20,942 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2022-12-13 18:14:20,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:14:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2022-12-13 18:14:20,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 18:14:20,943 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:14:20,943 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:14:20,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (31)] Ended with exit code 0 [2022-12-13 18:14:21,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:14:21,144 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:14:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:14:21,145 INFO L85 PathProgramCache]: Analyzing trace with hash 749736082, now seen corresponding path program 1 times [2022-12-13 18:14:21,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:14:21,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753984667] [2022-12-13 18:14:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:14:21,146 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 18:14:21,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:14:21,148 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:14:21,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (32)] Waiting until timeout for monitored process [2022-12-13 18:14:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:14:21,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 18:14:21,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:14:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:14:23,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:14:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:14:29,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:14:29,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753984667] [2022-12-13 18:14:29,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753984667] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:14:29,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:14:29,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2022-12-13 18:14:29,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255601489] [2022-12-13 18:14:29,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:14:29,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 18:14:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:14:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 18:14:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-12-13 18:14:29,652 INFO L87 Difference]: Start difference. First operand 141 states and 186 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2022-12-13 18:14:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:14:39,286 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2022-12-13 18:14:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:14:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) Word has length 79 [2022-12-13 18:14:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:14:39,290 INFO L225 Difference]: With dead ends: 160 [2022-12-13 18:14:39,290 INFO L226 Difference]: Without dead ends: 131 [2022-12-13 18:14:39,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 18:14:39,291 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 148 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:14:39,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 967 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-12-13 18:14:39,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-13 18:14:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2022-12-13 18:14:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 97 states have internal predecessors, (109), 19 states have call successors, (19), 8 states have call predecessors, (19), 11 states have return successors, (38), 20 states have call predecessors, (38), 18 states have call successors, (38) [2022-12-13 18:14:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 166 transitions. [2022-12-13 18:14:39,321 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 166 transitions. Word has length 79 [2022-12-13 18:14:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:14:39,322 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 166 transitions. [2022-12-13 18:14:39,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2022-12-13 18:14:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 166 transitions. [2022-12-13 18:14:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 18:14:39,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:14:39,323 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:14:39,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (32)] Ended with exit code 0 [2022-12-13 18:14:39,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:14:39,523 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:14:39,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:14:39,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2114830850, now seen corresponding path program 2 times [2022-12-13 18:14:39,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:14:39,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766350825] [2022-12-13 18:14:39,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:14:39,524 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 18:14:39,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:14:39,525 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:14:39,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (33)] Waiting until timeout for monitored process [2022-12-13 18:14:39,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:14:39,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:14:39,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 18:14:39,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:14:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:14:46,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:15:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:15:09,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:15:09,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766350825] [2022-12-13 18:15:09,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766350825] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:15:09,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:15:09,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2022-12-13 18:15:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509517603] [2022-12-13 18:15:09,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:15:09,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-13 18:15:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:15:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-13 18:15:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1665, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 18:15:09,186 INFO L87 Difference]: Start difference. First operand 126 states and 166 transitions. Second operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:15:48,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:15:54,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:16:01,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:01,801 INFO L93 Difference]: Finished difference Result 153 states and 195 transitions. [2022-12-13 18:16:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 18:16:01,804 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) Word has length 82 [2022-12-13 18:16:01,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:01,806 INFO L225 Difference]: With dead ends: 153 [2022-12-13 18:16:01,806 INFO L226 Difference]: Without dead ends: 140 [2022-12-13 18:16:01,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=775, Invalid=5387, Unknown=0, NotChecked=0, Total=6162 [2022-12-13 18:16:01,808 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 166 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:01,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1270 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2022-12-13 18:16:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-13 18:16:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2022-12-13 18:16:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 98 states have internal predecessors, (110), 19 states have call successors, (19), 8 states have call predecessors, (19), 11 states have return successors, (37), 20 states have call predecessors, (37), 18 states have call successors, (37) [2022-12-13 18:16:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2022-12-13 18:16:01,836 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 82 [2022-12-13 18:16:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:01,836 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2022-12-13 18:16:01,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:16:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2022-12-13 18:16:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 18:16:01,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:01,837 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:01,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (33)] Ended with exit code 0 [2022-12-13 18:16:02,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:16:02,038 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:02,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:02,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2142271786, now seen corresponding path program 2 times [2022-12-13 18:16:02,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:16:02,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046618621] [2022-12-13 18:16:02,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:16:02,041 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 18:16:02,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:16:02,043 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:16:02,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (34)] Waiting until timeout for monitored process [2022-12-13 18:16:02,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:16:02,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:02,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:16:02,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:16:05,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:16:10,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:16:10,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046618621] [2022-12-13 18:16:10,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046618621] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:10,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:16:10,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2022-12-13 18:16:10,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923018503] [2022-12-13 18:16:10,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:10,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 18:16:10,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:16:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 18:16:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:16:10,802 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2022-12-13 18:16:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:22,272 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-12-13 18:16:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 18:16:22,275 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) Word has length 79 [2022-12-13 18:16:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:22,275 INFO L225 Difference]: With dead ends: 141 [2022-12-13 18:16:22,275 INFO L226 Difference]: Without dead ends: 112 [2022-12-13 18:16:22,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 18:16:22,277 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 144 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:22,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 813 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 18:16:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-13 18:16:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-12-13 18:16:22,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 86 states have internal predecessors, (97), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (34), 18 states have call predecessors, (34), 16 states have call successors, (34) [2022-12-13 18:16:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2022-12-13 18:16:22,303 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 79 [2022-12-13 18:16:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:22,303 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2022-12-13 18:16:22,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2022-12-13 18:16:22,303 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2022-12-13 18:16:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 18:16:22,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:22,304 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:22,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (34)] Ended with exit code 0 [2022-12-13 18:16:22,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:16:22,505 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1402295107, now seen corresponding path program 1 times [2022-12-13 18:16:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:16:22,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225275859] [2022-12-13 18:16:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:22,508 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 18:16:22,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:16:22,511 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:16:22,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (35)] Waiting until timeout for monitored process [2022-12-13 18:16:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:22,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:16:22,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:16:23,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:16:25,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:16:25,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225275859] [2022-12-13 18:16:25,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225275859] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:25,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:16:25,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-12-13 18:16:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163189961] [2022-12-13 18:16:25,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:16:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:16:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:16:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:16:25,430 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 18:16:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:28,462 INFO L93 Difference]: Finished difference Result 121 states and 156 transitions. [2022-12-13 18:16:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:16:28,463 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 83 [2022-12-13 18:16:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:28,465 INFO L225 Difference]: With dead ends: 121 [2022-12-13 18:16:28,465 INFO L226 Difference]: Without dead ends: 108 [2022-12-13 18:16:28,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-12-13 18:16:28,466 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 138 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:28,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 613 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 18:16:28,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-13 18:16:28,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-12-13 18:16:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 84 states have internal predecessors, (94), 16 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (32), 17 states have call predecessors, (32), 15 states have call successors, (32) [2022-12-13 18:16:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2022-12-13 18:16:28,504 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 83 [2022-12-13 18:16:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:28,504 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2022-12-13 18:16:28,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 18:16:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2022-12-13 18:16:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 18:16:28,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:28,505 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:28,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (35)] Forceful destruction successful, exit code 0 [2022-12-13 18:16:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:16:28,706 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:28,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1128450436, now seen corresponding path program 1 times [2022-12-13 18:16:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:16:28,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254669020] [2022-12-13 18:16:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:28,708 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 18:16:28,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:16:28,711 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:16:28,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (36)] Waiting until timeout for monitored process [2022-12-13 18:16:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 18:16:28,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:16:33,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:16:43,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:16:43,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254669020] [2022-12-13 18:16:43,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254669020] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:43,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:16:43,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2022-12-13 18:16:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018888604] [2022-12-13 18:16:43,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:43,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 18:16:43,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:16:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 18:16:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2022-12-13 18:16:43,770 INFO L87 Difference]: Start difference. First operand 108 states and 142 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:17:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:17:12,858 INFO L93 Difference]: Finished difference Result 160 states and 203 transitions. [2022-12-13 18:17:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 18:17:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) Word has length 80 [2022-12-13 18:17:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:17:12,861 INFO L225 Difference]: With dead ends: 160 [2022-12-13 18:17:12,862 INFO L226 Difference]: Without dead ends: 134 [2022-12-13 18:17:12,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=641, Invalid=3391, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 18:17:12,863 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 162 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:17:12,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 1337 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-12-13 18:17:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-12-13 18:17:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2022-12-13 18:17:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 93 states have internal predecessors, (105), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (34), 19 states have call predecessors, (34), 17 states have call successors, (34) [2022-12-13 18:17:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2022-12-13 18:17:12,892 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 80 [2022-12-13 18:17:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:17:12,892 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2022-12-13 18:17:12,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:17:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2022-12-13 18:17:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 18:17:12,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:17:12,893 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:12,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (36)] Forceful destruction successful, exit code 0 [2022-12-13 18:17:13,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:17:13,094 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:17:13,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1440446079, now seen corresponding path program 2 times [2022-12-13 18:17:13,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:17:13,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648181153] [2022-12-13 18:17:13,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:17:13,096 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 18:17:13,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:17:13,099 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:17:13,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (37)] Waiting until timeout for monitored process [2022-12-13 18:17:13,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:17:13,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:17:13,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:17:13,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:17:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:17:14,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:17:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:17:16,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:17:16,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648181153] [2022-12-13 18:17:16,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648181153] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:17:16,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:17:16,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-12-13 18:17:16,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118778730] [2022-12-13 18:17:16,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:17:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:17:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:17:16,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:17:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:17:16,120 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 18:17:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:17:19,070 INFO L93 Difference]: Finished difference Result 127 states and 163 transitions. [2022-12-13 18:17:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:17:19,071 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 83 [2022-12-13 18:17:19,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:17:19,073 INFO L225 Difference]: With dead ends: 127 [2022-12-13 18:17:19,073 INFO L226 Difference]: Without dead ends: 107 [2022-12-13 18:17:19,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-12-13 18:17:19,074 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 99 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:17:19,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 655 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 18:17:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-13 18:17:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-12-13 18:17:19,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 80 states have (on average 1.1625) internal successors, (93), 84 states have internal predecessors, (93), 16 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2022-12-13 18:17:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2022-12-13 18:17:19,108 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 83 [2022-12-13 18:17:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:17:19,108 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2022-12-13 18:17:19,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 18:17:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2022-12-13 18:17:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 18:17:19,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:17:19,109 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:19,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (37)] Forceful destruction successful, exit code 0 [2022-12-13 18:17:19,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:17:19,310 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:17:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1457098876, now seen corresponding path program 2 times [2022-12-13 18:17:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:17:19,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236482154] [2022-12-13 18:17:19,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:17:19,311 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 18:17:19,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:17:19,311 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:17:19,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (38)] Waiting until timeout for monitored process [2022-12-13 18:17:19,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:17:19,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:17:19,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 18:17:19,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:17:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:17:23,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:17:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:17:34,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:17:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236482154] [2022-12-13 18:17:34,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236482154] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:17:34,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:17:34,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2022-12-13 18:17:34,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167053919] [2022-12-13 18:17:34,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:17:34,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 18:17:34,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:17:34,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 18:17:34,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 18:17:34,501 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:18:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:18:08,105 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2022-12-13 18:18:08,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 18:18:08,107 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) Word has length 80 [2022-12-13 18:18:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:18:08,108 INFO L225 Difference]: With dead ends: 157 [2022-12-13 18:18:08,108 INFO L226 Difference]: Without dead ends: 144 [2022-12-13 18:18:08,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=684, Invalid=3606, Unknown=0, NotChecked=0, Total=4290 [2022-12-13 18:18:08,112 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 185 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:18:08,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1028 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-12-13 18:18:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-12-13 18:18:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2022-12-13 18:18:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 99 states have (on average 1.1616161616161615) internal successors, (115), 103 states have internal predecessors, (115), 19 states have call successors, (19), 7 states have call predecessors, (19), 11 states have return successors, (31), 19 states have call predecessors, (31), 18 states have call successors, (31) [2022-12-13 18:18:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2022-12-13 18:18:08,152 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 80 [2022-12-13 18:18:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:18:08,152 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2022-12-13 18:18:08,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:18:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2022-12-13 18:18:08,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 18:18:08,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:18:08,153 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:08,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (38)] Ended with exit code 0 [2022-12-13 18:18:08,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:18:08,355 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:18:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash 416569969, now seen corresponding path program 1 times [2022-12-13 18:18:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:18:08,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814470068] [2022-12-13 18:18:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:08,358 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 18:18:08,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:18:08,361 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:18:08,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (39)] Waiting until timeout for monitored process [2022-12-13 18:18:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:08,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:18:08,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:18:09,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:18:11,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:18:11,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814470068] [2022-12-13 18:18:11,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814470068] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:11,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:18:11,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-12-13 18:18:11,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274007638] [2022-12-13 18:18:11,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:11,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:18:11,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:18:11,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:18:11,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:18:11,460 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 18:18:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:18:14,562 INFO L93 Difference]: Finished difference Result 144 states and 179 transitions. [2022-12-13 18:18:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:18:14,564 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 81 [2022-12-13 18:18:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:18:14,564 INFO L225 Difference]: With dead ends: 144 [2022-12-13 18:18:14,565 INFO L226 Difference]: Without dead ends: 134 [2022-12-13 18:18:14,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-12-13 18:18:14,566 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 129 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:18:14,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 683 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 18:18:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-12-13 18:18:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 119. [2022-12-13 18:18:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 93 states have internal predecessors, (104), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (29), 18 states have call predecessors, (29), 17 states have call successors, (29) [2022-12-13 18:18:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 151 transitions. [2022-12-13 18:18:14,602 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 151 transitions. Word has length 81 [2022-12-13 18:18:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:18:14,603 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 151 transitions. [2022-12-13 18:18:14,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 18:18:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 151 transitions. [2022-12-13 18:18:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 18:18:14,604 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:18:14,604 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:14,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (39)] Ended with exit code 0 [2022-12-13 18:18:14,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:18:14,805 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:18:14,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1958643556, now seen corresponding path program 1 times [2022-12-13 18:18:14,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:18:14,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598803798] [2022-12-13 18:18:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:14,809 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 18:18:14,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:18:14,812 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:18:14,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (40)] Waiting until timeout for monitored process [2022-12-13 18:18:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:15,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 18:18:15,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 18:18:23,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 18:18:47,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:18:47,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598803798] [2022-12-13 18:18:47,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598803798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:47,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:18:47,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2022-12-13 18:18:47,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385940648] [2022-12-13 18:18:47,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:47,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-13 18:18:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:18:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-13 18:18:47,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 18:18:47,146 INFO L87 Difference]: Start difference. First operand 119 states and 151 transitions. Second operand has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-12-13 18:18:56,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:18:58,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:19:31,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:19:32,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:19:33,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:19:34,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:19:36,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:19:37,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:19:44,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:19:44,778 INFO L93 Difference]: Finished difference Result 138 states and 171 transitions. [2022-12-13 18:19:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 18:19:44,781 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 85 [2022-12-13 18:19:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:19:44,782 INFO L225 Difference]: With dead ends: 138 [2022-12-13 18:19:44,782 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 18:19:44,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 57.5s TimeCoverageRelationStatistics Valid=553, Invalid=4702, Unknown=1, NotChecked=0, Total=5256 [2022-12-13 18:19:44,783 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 163 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:19:44,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1250 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2022-12-13 18:19:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 18:19:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2022-12-13 18:19:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 94 states have internal predecessors, (106), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (27), 19 states have call predecessors, (27), 17 states have call successors, (27) [2022-12-13 18:19:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2022-12-13 18:19:44,817 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 85 [2022-12-13 18:19:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:19:44,817 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2022-12-13 18:19:44,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-12-13 18:19:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2022-12-13 18:19:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 18:19:44,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:19:44,818 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:19:44,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (40)] Ended with exit code 0 [2022-12-13 18:19:45,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:19:45,021 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:19:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:45,022 INFO L85 PathProgramCache]: Analyzing trace with hash -155373131, now seen corresponding path program 2 times [2022-12-13 18:19:45,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:19:45,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473385489] [2022-12-13 18:19:45,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:19:45,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:19:45,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:19:45,026 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:19:45,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (41)] Waiting until timeout for monitored process [2022-12-13 18:19:45,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:19:45,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:45,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:19:45,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:19:46,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:19:47,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:19:47,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473385489] [2022-12-13 18:19:47,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473385489] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:47,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:19:47,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-12-13 18:19:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208785201] [2022-12-13 18:19:47,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:47,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:19:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:19:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:19:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:19:47,878 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 18:19:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:19:51,489 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2022-12-13 18:19:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:19:51,491 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 81 [2022-12-13 18:19:51,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:19:51,492 INFO L225 Difference]: With dead ends: 135 [2022-12-13 18:19:51,492 INFO L226 Difference]: Without dead ends: 125 [2022-12-13 18:19:51,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-12-13 18:19:51,493 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 128 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:19:51,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 738 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 18:19:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-13 18:19:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 110. [2022-12-13 18:19:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.144578313253012) internal successors, (95), 84 states have internal predecessors, (95), 17 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (25), 18 states have call predecessors, (25), 16 states have call successors, (25) [2022-12-13 18:19:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 137 transitions. [2022-12-13 18:19:51,540 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 137 transitions. Word has length 81 [2022-12-13 18:19:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:19:51,541 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 137 transitions. [2022-12-13 18:19:51,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 18:19:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 137 transitions. [2022-12-13 18:19:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 18:19:51,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:19:51,542 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:19:51,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (41)] Ended with exit code 0 [2022-12-13 18:19:51,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:19:51,743 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:19:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1615490404, now seen corresponding path program 2 times [2022-12-13 18:19:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:19:51,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705937769] [2022-12-13 18:19:51,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:19:51,744 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 18:19:51,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:19:51,745 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:19:51,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (42)] Waiting until timeout for monitored process [2022-12-13 18:19:52,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:19:52,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:52,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 18:19:52,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:20:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 18:20:00,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:20:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 18:20:26,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:20:26,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705937769] [2022-12-13 18:20:26,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705937769] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:20:26,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:20:26,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2022-12-13 18:20:26,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501731416] [2022-12-13 18:20:26,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:20:26,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-13 18:20:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:20:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-13 18:20:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 18:20:26,034 INFO L87 Difference]: Start difference. First operand 110 states and 137 transitions. Second operand has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-12-13 18:21:00,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:21:01,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:21:03,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:21:17,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:21:37,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:21:38,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:21:41,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:21:42,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 18:21:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:21:50,056 INFO L93 Difference]: Finished difference Result 130 states and 158 transitions. [2022-12-13 18:21:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 18:21:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 85 [2022-12-13 18:21:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:21:50,059 INFO L225 Difference]: With dead ends: 130 [2022-12-13 18:21:50,059 INFO L226 Difference]: Without dead ends: 118 [2022-12-13 18:21:50,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 79.8s TimeCoverageRelationStatistics Valid=639, Invalid=5681, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 18:21:50,060 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 192 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:21:50,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1172 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2022-12-13 18:21:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-13 18:21:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2022-12-13 18:21:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 83 states have internal predecessors, (92), 17 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (23), 17 states have call predecessors, (23), 16 states have call successors, (23) [2022-12-13 18:21:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 132 transitions. [2022-12-13 18:21:50,103 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 132 transitions. Word has length 85 [2022-12-13 18:21:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:21:50,103 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 132 transitions. [2022-12-13 18:21:50,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-12-13 18:21:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 132 transitions. [2022-12-13 18:21:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 18:21:50,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:21:50,104 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:21:50,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (42)] Forceful destruction successful, exit code 0 [2022-12-13 18:21:50,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:21:50,306 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:21:50,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:21:50,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1612746217, now seen corresponding path program 1 times [2022-12-13 18:21:50,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:21:50,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219941861] [2022-12-13 18:21:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:21:50,309 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 18:21:50,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:21:50,312 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 18:21:50,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29fd5c50-f92e-4bf9-9f1a-4208ed206af6/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 (43)] Waiting until timeout for monitored process [2022-12-13 18:21:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:50,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 18:21:50,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:21:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 18:21:54,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:22:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 18:22:03,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:22:03,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219941861] [2022-12-13 18:22:03,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219941861] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:22:03,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:22:03,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2022-12-13 18:22:03,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368700386] [2022-12-13 18:22:03,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:22:03,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 18:22:03,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:22:03,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 18:22:03,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-12-13 18:22:03,542 INFO L87 Difference]: Start difference. First operand 108 states and 132 transitions. Second operand has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14)