./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8 --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 464cfb1fddddc503ce4a60ba7271f6a7a7e255070ab192dcd8706e91368aad81 --- 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-e04fb08 [2022-11-16 12:17:54,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:17:54,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:17:54,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:17:54,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:17:54,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:17:54,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:17:54,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:17:54,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:17:54,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:17:54,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:17:54,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:17:54,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:17:54,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:17:54,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:17:54,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:17:54,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:17:54,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:17:54,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:17:54,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:17:54,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:17:54,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:17:54,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:17:54,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:17:54,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:17:54,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:17:54,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:17:54,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:17:54,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:17:54,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:17:54,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:17:54,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:17:54,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:17:54,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:17:54,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:17:54,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:17:54,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:17:54,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:17:54,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:17:54,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:17:54,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:17:54,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:17:54,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:17:54,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:17:54,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:17:54,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:17:54,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:17:54,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:17:54,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:17:54,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:17:54,543 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:17:54,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:17:54,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:17:54,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:17:54,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:17:54,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:17:54,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:17:54,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:17:54,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:17:54,545 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:17:54,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:17:54,545 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:17:54,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:17:54,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:17:54,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:17:54,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:17:54,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:17:54,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:17:54,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:17:54,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:17:54,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:17:54,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:17:54,548 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:17:54,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:17:54,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:17:54,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 464cfb1fddddc503ce4a60ba7271f6a7a7e255070ab192dcd8706e91368aad81 [2022-11-16 12:17:54,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:17:54,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:17:54,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:17:54,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:17:54,937 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:17:54,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c [2022-11-16 12:17:55,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data/7dcbdf6e1/a5b06d96661a4f17a747cd178e270af6/FLAG6adb8d928 [2022-11-16 12:17:55,541 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:17:55,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c [2022-11-16 12:17:55,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data/7dcbdf6e1/a5b06d96661a4f17a747cd178e270af6/FLAG6adb8d928 [2022-11-16 12:17:55,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data/7dcbdf6e1/a5b06d96661a4f17a747cd178e270af6 [2022-11-16 12:17:55,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:17:55,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:17:55,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:17:55,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:17:55,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:17:55,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:55" (1/1) ... [2022-11-16 12:17:55,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a29818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:55, skipping insertion in model container [2022-11-16 12:17:55,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:55" (1/1) ... [2022-11-16 12:17:55,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:17:55,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:17:56,161 WARN L229 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_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c[1997,2010] [2022-11-16 12:17:56,166 WARN L229 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_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c[2366,2379] [2022-11-16 12:17:56,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:17:56,227 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:17:56,243 WARN L229 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_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c[1997,2010] [2022-11-16 12:17:56,245 WARN L229 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_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c[2366,2379] [2022-11-16 12:17:56,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:17:56,300 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:17:56,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56 WrapperNode [2022-11-16 12:17:56,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:17:56,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:17:56,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:17:56,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:17:56,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,386 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 175 [2022-11-16 12:17:56,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:17:56,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:17:56,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:17:56,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:17:56,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,421 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:17:56,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:17:56,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:17:56,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:17:56,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (1/1) ... [2022-11-16 12:17:56,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:17:56,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:56,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:17:56,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:17:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:17:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 12:17:56,542 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 12:17:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:17:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:17:56,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:17:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:17:56,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:17:56,631 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:17:56,633 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:17:57,170 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:17:57,180 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:17:57,180 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:17:57,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:57 BoogieIcfgContainer [2022-11-16 12:17:57,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:17:57,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:17:57,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:17:57,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:17:57,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:17:55" (1/3) ... [2022-11-16 12:17:57,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e552bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:57, skipping insertion in model container [2022-11-16 12:17:57,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:56" (2/3) ... [2022-11-16 12:17:57,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e552bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:57, skipping insertion in model container [2022-11-16 12:17:57,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:57" (3/3) ... [2022-11-16 12:17:57,204 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_2a.c.cil.c [2022-11-16 12:17:57,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:17:57,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:17:57,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:17:57,352 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;@3f7d59dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:17:57,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:17:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 71 states have (on average 1.619718309859155) internal successors, (115), 74 states have internal predecessors, (115), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:17:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:17:57,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:57,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:57,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1847035396, now seen corresponding path program 1 times [2022-11-16 12:17:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:57,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425663820] [2022-11-16 12:17:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:57,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:57,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:57,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425663820] [2022-11-16 12:17:57,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425663820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:57,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:57,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:17:57,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529446699] [2022-11-16 12:17:57,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:57,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:17:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:17:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:17:57,658 INFO L87 Difference]: Start difference. First operand has 81 states, 71 states have (on average 1.619718309859155) internal successors, (115), 74 states have internal predecessors, (115), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 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) [2022-11-16 12:17:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:57,701 INFO L93 Difference]: Finished difference Result 157 states and 247 transitions. [2022-11-16 12:17:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:17:57,704 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 [2022-11-16 12:17:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:57,714 INFO L225 Difference]: With dead ends: 157 [2022-11-16 12:17:57,714 INFO L226 Difference]: Without dead ends: 72 [2022-11-16 12:17:57,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:17:57,725 INFO L413 NwaCegarLoop]: 116 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, 116 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 [2022-11-16 12:17:57,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:17:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-16 12:17:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-16 12:17:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.5) internal successors, (96), 65 states have internal predecessors, (96), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:17:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2022-11-16 12:17:57,811 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 7 [2022-11-16 12:17:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:57,812 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2022-11-16 12:17:57,812 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) [2022-11-16 12:17:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2022-11-16 12:17:57,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:17:57,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:57,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:57,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:17:57,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:57,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1846975814, now seen corresponding path program 1 times [2022-11-16 12:17:57,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:57,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906002411] [2022-11-16 12:17:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:57,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:17:57,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:17:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:17:57,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:17:57,912 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:17:57,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 12:17:57,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 12:17:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:17:57,924 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:17:57,928 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:17:57,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:17:57 BoogieIcfgContainer [2022-11-16 12:17:57,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:17:57,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:17:57,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:17:57,969 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:17:57,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:57" (3/4) ... [2022-11-16 12:17:57,974 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:17:57,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:17:57,977 INFO L158 Benchmark]: Toolchain (without parser) took 2088.42ms. Allocated memory is still 136.3MB. Free memory was 95.7MB in the beginning and 57.5MB in the end (delta: 38.2MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2022-11-16 12:17:57,978 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory is still 113.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:17:57,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.09ms. Allocated memory is still 136.3MB. Free memory was 95.4MB in the beginning and 108.1MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:17:57,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.93ms. Allocated memory is still 136.3MB. Free memory was 107.9MB in the beginning and 105.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:17:57,986 INFO L158 Benchmark]: Boogie Preprocessor took 40.22ms. Allocated memory is still 136.3MB. Free memory was 105.7MB in the beginning and 104.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:17:57,987 INFO L158 Benchmark]: RCFGBuilder took 760.53ms. Allocated memory is still 136.3MB. Free memory was 104.1MB in the beginning and 83.5MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 12:17:57,987 INFO L158 Benchmark]: TraceAbstraction took 774.90ms. Allocated memory is still 136.3MB. Free memory was 82.9MB in the beginning and 57.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 12:17:57,988 INFO L158 Benchmark]: Witness Printer took 6.25ms. Allocated memory is still 136.3MB. Free memory was 57.7MB in the beginning and 57.5MB in the end (delta: 223.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:17:57,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory is still 113.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.09ms. Allocated memory is still 136.3MB. Free memory was 95.4MB in the beginning and 108.1MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.93ms. Allocated memory is still 136.3MB. Free memory was 107.9MB in the beginning and 105.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.22ms. Allocated memory is still 136.3MB. Free memory was 105.7MB in the beginning and 104.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 760.53ms. Allocated memory is still 136.3MB. Free memory was 104.1MB in the beginning and 83.5MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 774.90ms. Allocated memory is still 136.3MB. Free memory was 82.9MB in the beginning and 57.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 6.25ms. Allocated memory is still 136.3MB. Free memory was 57.7MB in the beginning and 57.5MB in the end (delta: 223.9kB). 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: [L322] COND TRUE __VERIFIER_nondet_int() [L323] 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 < 1.399f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: 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 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 116 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-11-16 12:17:58,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8 --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 464cfb1fddddc503ce4a60ba7271f6a7a7e255070ab192dcd8706e91368aad81 --- 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-e04fb08 [2022-11-16 12:18:00,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:18:00,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:18:00,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:18:00,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:18:00,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:18:00,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:18:00,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:18:00,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:18:00,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:18:00,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:18:00,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:18:00,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:18:00,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:18:00,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:18:00,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:18:00,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:18:00,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:18:00,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:18:00,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:18:00,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:18:00,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:18:00,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:18:00,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:18:00,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:18:00,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:18:00,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:18:00,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:18:00,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:18:00,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:18:00,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:18:00,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:18:00,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:18:00,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:18:00,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:18:00,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:18:00,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:18:00,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:18:00,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:18:00,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:18:00,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:18:00,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 12:18:00,946 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:18:00,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:18:00,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:18:00,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:18:00,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:18:00,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:18:00,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:18:00,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:18:00,964 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:18:00,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:18:00,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:18:00,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:18:00,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:18:00,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:18:00,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:18:00,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:18:00,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:18:00,968 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:18:00,968 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:18:00,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:18:00,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:18:00,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:18:00,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:18:00,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:18:00,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:18:00,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:18:00,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:00,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:18:00,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:18:00,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:18:00,971 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:18:00,972 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:18:00,972 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:18:00,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:18:00,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:18:00,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:18:00,973 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 464cfb1fddddc503ce4a60ba7271f6a7a7e255070ab192dcd8706e91368aad81 [2022-11-16 12:18:01,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:18:01,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:18:01,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:18:01,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:18:01,522 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:18:01,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c [2022-11-16 12:18:01,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data/436527afe/966c3e7c1de549c9b1990583438e4424/FLAG5375fea8e [2022-11-16 12:18:02,302 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:18:02,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c [2022-11-16 12:18:02,319 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data/436527afe/966c3e7c1de549c9b1990583438e4424/FLAG5375fea8e [2022-11-16 12:18:02,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/data/436527afe/966c3e7c1de549c9b1990583438e4424 [2022-11-16 12:18:02,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:18:02,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:18:02,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:02,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:18:02,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:18:02,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:02" (1/1) ... [2022-11-16 12:18:02,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1d5fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:02, skipping insertion in model container [2022-11-16 12:18:02,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:02" (1/1) ... [2022-11-16 12:18:02,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:18:02,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:18:02,919 WARN L229 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_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c[1997,2010] [2022-11-16 12:18:02,925 WARN L229 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_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c[2366,2379] [2022-11-16 12:18:02,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:03,020 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:18:03,039 WARN L229 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_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c[1997,2010] [2022-11-16 12:18:03,041 WARN L229 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_e51c29ae-2f54-4d75-8471-712d1d049dba/sv-benchmarks/c/combinations/square_6+soft_float_2a.c.cil.c[2366,2379] [2022-11-16 12:18:03,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:03,091 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:18:03,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03 WrapperNode [2022-11-16 12:18:03,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:03,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:03,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:18:03,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:18:03,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,172 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-11-16 12:18:03,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:03,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:18:03,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:18:03,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:18:03,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:18:03,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:18:03,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:18:03,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:18:03,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (1/1) ... [2022-11-16 12:18:03,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:03,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:18:03,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:18:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:18:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:18:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 12:18:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 12:18:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:18:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:18:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:18:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:18:03,502 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:18:03,505 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:18:06,380 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:18:06,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:18:06,389 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:18:06,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:06 BoogieIcfgContainer [2022-11-16 12:18:06,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:18:06,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:18:06,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:18:06,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:18:06,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:18:02" (1/3) ... [2022-11-16 12:18:06,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aae61c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:06, skipping insertion in model container [2022-11-16 12:18:06,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:03" (2/3) ... [2022-11-16 12:18:06,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aae61c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:06, skipping insertion in model container [2022-11-16 12:18:06,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:06" (3/3) ... [2022-11-16 12:18:06,402 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_2a.c.cil.c [2022-11-16 12:18:06,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:18:06,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:18:06,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:18:06,484 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;@75fa1bb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:18:06,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:18:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:18:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:18:06,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:06,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:06,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:06,507 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-16 12:18:06,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:06,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37764565] [2022-11-16 12:18:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:06,524 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 [2022-11-16 12:18:06,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:06,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:18:06,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:18:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:07,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:18:07,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:07,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:18:07,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:18:07,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37764565] [2022-11-16 12:18:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37764565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:07,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:07,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:18:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121429775] [2022-11-16 12:18:07,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:07,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:18:07,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:18:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:18:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:18:07,506 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 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) [2022-11-16 12:18:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:07,559 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-11-16 12:18:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:18:07,561 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 [2022-11-16 12:18:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:07,574 INFO L225 Difference]: With dead ends: 117 [2022-11-16 12:18:07,574 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 12:18:07,580 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 [2022-11-16 12:18:07,591 INFO L413 NwaCegarLoop]: 82 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, 82 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 [2022-11-16 12:18:07,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:18:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 12:18:07,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-16 12:18:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:18:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-11-16 12:18:07,649 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-11-16 12:18:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:07,651 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-11-16 12:18:07,652 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) [2022-11-16 12:18:07,652 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-11-16 12:18:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:18:07,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:07,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:07,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:07,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:07,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-16 12:18:07,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:07,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710778574] [2022-11-16 12:18:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:07,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:07,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:07,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:18:07,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:28:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:43,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:28:43,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:59,014 WARN L833 $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 [2022-11-16 12:29:32,768 WARN L833 $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 (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))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (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 (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-16 12:29:34,817 WARN L855 $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 (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))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (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 (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-16 12:29:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:34,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:34,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:34,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710778574] [2022-11-16 12:29:34,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710778574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:34,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:34,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375869013] [2022-11-16 12:29:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:34,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-11-16 12:29:34,823 INFO L87 Difference]: Start difference. First operand 52 states and 71 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) [2022-11-16 12:29:37,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:37,619 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-11-16 12:29:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:37,620 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 [2022-11-16 12:29:37,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:37,621 INFO L225 Difference]: With dead ends: 52 [2022-11-16 12:29:37,622 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 12:29:37,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2022-11-16 12:29:37,624 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 67 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:37,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 178 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 1 Unknown, 137 Unchecked, 2.5s Time] [2022-11-16 12:29:37,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 12:29:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-16 12:29:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2022-11-16 12:29:37,633 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 7 [2022-11-16 12:29:37,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:37,633 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2022-11-16 12:29:37,634 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) [2022-11-16 12:29:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2022-11-16 12:29:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 12:29:37,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:37,636 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:37,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:37,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:37,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1370969986, now seen corresponding path program 1 times [2022-11-16 12:29:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:37,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375095172] [2022-11-16 12:29:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:37,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:37,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:37,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:37,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:29:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:37,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:29:37,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:29:38,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:38,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:38,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375095172] [2022-11-16 12:29:38,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375095172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:38,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:38,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:29:38,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010120275] [2022-11-16 12:29:38,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:38,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:29:38,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:38,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:29:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:29:38,078 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:29:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:38,535 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2022-11-16 12:29:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:29:38,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-11-16 12:29:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:38,542 INFO L225 Difference]: With dead ends: 104 [2022-11-16 12:29:38,543 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 12:29:38,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:38,545 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:38,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:29:38,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 12:29:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2022-11-16 12:29:38,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:29:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2022-11-16 12:29:38,570 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 43 [2022-11-16 12:29:38,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:38,571 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2022-11-16 12:29:38,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:29:38,571 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2022-11-16 12:29:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:29:38,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:38,573 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:38,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:38,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash -14997806, now seen corresponding path program 1 times [2022-11-16 12:29:38,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:38,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602895039] [2022-11-16 12:29:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:38,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:38,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:38,777 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:38,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:29:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:29:38,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:29:39,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:39,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:39,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602895039] [2022-11-16 12:29:39,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602895039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:39,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:39,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:29:39,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523029454] [2022-11-16 12:29:39,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:39,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:29:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:39,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:29:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:29:39,077 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:29:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:39,494 INFO L93 Difference]: Finished difference Result 108 states and 153 transitions. [2022-11-16 12:29:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:29:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-11-16 12:29:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:39,496 INFO L225 Difference]: With dead ends: 108 [2022-11-16 12:29:39,496 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 12:29:39,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:39,498 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 10 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:39,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:29:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 12:29:39,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-11-16 12:29:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 12:29:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-11-16 12:29:39,517 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2022-11-16 12:29:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:39,517 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-11-16 12:29:39,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:29:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-11-16 12:29:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:29:39,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:39,520 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:39,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:39,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:39,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:39,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1638472845, now seen corresponding path program 1 times [2022-11-16 12:29:39,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:39,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777812810] [2022-11-16 12:29:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:39,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:39,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:39,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:39,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:29:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:39,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:29:39,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:29:40,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:40,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:40,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777812810] [2022-11-16 12:29:40,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777812810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:40,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:40,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:29:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012319096] [2022-11-16 12:29:40,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:40,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:29:40,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:29:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:29:40,013 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:29:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:40,467 INFO L93 Difference]: Finished difference Result 117 states and 165 transitions. [2022-11-16 12:29:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:29:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-11-16 12:29:40,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:40,472 INFO L225 Difference]: With dead ends: 117 [2022-11-16 12:29:40,472 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 12:29:40,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:40,473 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 17 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:40,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 153 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:29:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 12:29:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2022-11-16 12:29:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 12:29:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2022-11-16 12:29:40,488 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 47 [2022-11-16 12:29:40,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:40,488 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2022-11-16 12:29:40,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:29:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2022-11-16 12:29:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:29:40,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:40,494 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:40,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:40,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:40,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash 388661875, now seen corresponding path program 1 times [2022-11-16 12:29:40,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:40,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35680801] [2022-11-16 12:29:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:40,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:40,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:40,697 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:40,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:29:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:40,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:29:40,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:29:41,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:41,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:41,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35680801] [2022-11-16 12:29:41,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35680801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:41,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:41,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:41,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001345099] [2022-11-16 12:29:41,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:41,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:29:41,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:41,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:29:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:41,063 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:29:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:41,797 INFO L93 Difference]: Finished difference Result 125 states and 176 transitions. [2022-11-16 12:29:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:41,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-11-16 12:29:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:41,799 INFO L225 Difference]: With dead ends: 125 [2022-11-16 12:29:41,800 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 12:29:41,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:41,801 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:41,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 202 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:29:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 12:29:41,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2022-11-16 12:29:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.38) internal successors, (69), 51 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 12:29:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2022-11-16 12:29:41,817 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 48 [2022-11-16 12:29:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:41,818 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2022-11-16 12:29:41,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:29:41,818 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2022-11-16 12:29:41,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 12:29:41,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:41,821 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:41,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:29:42,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:42,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 933318672, now seen corresponding path program 1 times [2022-11-16 12:29:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027513015] [2022-11-16 12:29:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:42,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:42,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:42,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:42,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:29:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:42,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:29:42,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:29:42,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:29:43,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:43,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027513015] [2022-11-16 12:29:43,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027513015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:43,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:43,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:29:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608097659] [2022-11-16 12:29:43,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:43,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:29:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:29:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:29:43,165 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:29:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:44,450 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2022-11-16 12:29:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:29:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2022-11-16 12:29:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:44,453 INFO L225 Difference]: With dead ends: 146 [2022-11-16 12:29:44,453 INFO L226 Difference]: Without dead ends: 95 [2022-11-16 12:29:44,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:29:44,455 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 42 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:44,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 330 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:29:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-16 12:29:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 67. [2022-11-16 12:29:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 59 states have internal predecessors, (82), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 12:29:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2022-11-16 12:29:44,474 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 49 [2022-11-16 12:29:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:44,474 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2022-11-16 12:29:44,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:29:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2022-11-16 12:29:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:29:44,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:44,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:44,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:44,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:44,698 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1187730481, now seen corresponding path program 1 times [2022-11-16 12:29:44,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:44,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637873065] [2022-11-16 12:29:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:44,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:44,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:44,700 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:44,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:29:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:44,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:29:44,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:29:45,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:29:45,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:45,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637873065] [2022-11-16 12:29:45,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637873065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:45,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:45,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 12:29:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300080175] [2022-11-16 12:29:45,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:29:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:29:45,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:29:45,873 INFO L87 Difference]: Start difference. First operand 67 states and 95 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:29:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:47,821 INFO L93 Difference]: Finished difference Result 164 states and 236 transitions. [2022-11-16 12:29:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:29:47,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2022-11-16 12:29:47,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:47,823 INFO L225 Difference]: With dead ends: 164 [2022-11-16 12:29:47,824 INFO L226 Difference]: Without dead ends: 105 [2022-11-16 12:29:47,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:29:47,825 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 135 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:47,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 334 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:29:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-16 12:29:47,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 71. [2022-11-16 12:29:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.435483870967742) internal successors, (89), 63 states have internal predecessors, (89), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 12:29:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 102 transitions. [2022-11-16 12:29:47,857 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 102 transitions. Word has length 51 [2022-11-16 12:29:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:47,860 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 102 transitions. [2022-11-16 12:29:47,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:29:47,860 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2022-11-16 12:29:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:29:47,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:47,868 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:47,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:48,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:48,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash -763243182, now seen corresponding path program 2 times [2022-11-16 12:29:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:48,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687433873] [2022-11-16 12:29:48,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:29:48,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:48,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:48,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:29:48,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:29:48,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:48,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:29:48,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-16 12:29:48,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:48,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:48,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687433873] [2022-11-16 12:29:48,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687433873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:48,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:48,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:48,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617150281] [2022-11-16 12:29:48,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:48,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:48,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:48,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:48,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:48,498 INFO L87 Difference]: Start difference. First operand 71 states and 102 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:29:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:48,885 INFO L93 Difference]: Finished difference Result 116 states and 165 transitions. [2022-11-16 12:29:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:29:48,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2022-11-16 12:29:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:48,887 INFO L225 Difference]: With dead ends: 116 [2022-11-16 12:29:48,887 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 12:29:48,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:29:48,888 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 35 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:48,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 355 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:29:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 12:29:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2022-11-16 12:29:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 75 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:29:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2022-11-16 12:29:48,905 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 58 [2022-11-16 12:29:48,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:48,906 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2022-11-16 12:29:48,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:29:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2022-11-16 12:29:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:29:48,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:48,908 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:48,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:49,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:49,119 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:49,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:49,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1156270192, now seen corresponding path program 1 times [2022-11-16 12:29:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:49,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130795669] [2022-11-16 12:29:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:49,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:49,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:49,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:49,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:29:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:49,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:29:49,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:29:49,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:51,503 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:29:51,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:51,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130795669] [2022-11-16 12:29:51,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130795669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:51,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:51,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-16 12:29:51,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441079721] [2022-11-16 12:29:51,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:51,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:29:51,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:51,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:29:51,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:29:51,506 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:29:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:56,004 INFO L93 Difference]: Finished difference Result 231 states and 332 transitions. [2022-11-16 12:29:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:29:56,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-11-16 12:29:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:56,007 INFO L225 Difference]: With dead ends: 231 [2022-11-16 12:29:56,008 INFO L226 Difference]: Without dead ends: 155 [2022-11-16 12:29:56,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:29:56,009 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 152 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:56,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 631 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 12:29:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-16 12:29:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2022-11-16 12:29:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 89 states have internal predecessors, (125), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:29:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 143 transitions. [2022-11-16 12:29:56,045 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 143 transitions. Word has length 58 [2022-11-16 12:29:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:56,045 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 143 transitions. [2022-11-16 12:29:56,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:29:56,046 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 143 transitions. [2022-11-16 12:29:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:29:56,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:56,047 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:56,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:56,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:56,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1365284847, now seen corresponding path program 1 times [2022-11-16 12:29:56,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:56,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749974610] [2022-11-16 12:29:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:56,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:56,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:56,264 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:56,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:29:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:56,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:29:56,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 24 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:29:57,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:29:58,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:58,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749974610] [2022-11-16 12:29:58,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749974610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:58,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:58,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 12:29:58,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219127650] [2022-11-16 12:29:58,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:58,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:29:58,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:58,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:29:58,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:29:58,917 INFO L87 Difference]: Start difference. First operand 98 states and 143 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:30:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:04,081 INFO L93 Difference]: Finished difference Result 254 states and 370 transitions. [2022-11-16 12:30:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:30:04,082 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-11-16 12:30:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:04,083 INFO L225 Difference]: With dead ends: 254 [2022-11-16 12:30:04,084 INFO L226 Difference]: Without dead ends: 164 [2022-11-16 12:30:04,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:30:04,086 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 404 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:04,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 678 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:30:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-16 12:30:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 108. [2022-11-16 12:30:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 97 states have (on average 1.4639175257731958) internal successors, (142), 99 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:30:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2022-11-16 12:30:04,110 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 63 [2022-11-16 12:30:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:04,110 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2022-11-16 12:30:04,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:30:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2022-11-16 12:30:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 12:30:04,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:04,112 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:04,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:04,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:04,325 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1400933040, now seen corresponding path program 2 times [2022-11-16 12:30:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:04,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247834682] [2022-11-16 12:30:04,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:30:04,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:04,328 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:04,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:30:04,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:30:04,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:30:04,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:30:04,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-16 12:30:04,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:30:04,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:04,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247834682] [2022-11-16 12:30:04,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247834682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:04,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:04,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:30:04,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873900298] [2022-11-16 12:30:04,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:04,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:30:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:30:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:30:04,493 INFO L87 Difference]: Start difference. First operand 108 states and 160 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:30:04,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:04,529 INFO L93 Difference]: Finished difference Result 131 states and 191 transitions. [2022-11-16 12:30:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:30:04,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2022-11-16 12:30:04,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:04,531 INFO L225 Difference]: With dead ends: 131 [2022-11-16 12:30:04,532 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 12:30:04,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:30:04,533 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:04,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:30:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 12:30:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-16 12:30:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 97 states have (on average 1.443298969072165) internal successors, (140), 99 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:30:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 158 transitions. [2022-11-16 12:30:04,554 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 158 transitions. Word has length 76 [2022-11-16 12:30:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:04,554 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 158 transitions. [2022-11-16 12:30:04,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:30:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 158 transitions. [2022-11-16 12:30:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 12:30:04,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:04,556 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:04,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:04,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:04,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:04,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash 856813194, now seen corresponding path program 1 times [2022-11-16 12:30:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:04,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825681548] [2022-11-16 12:30:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:04,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:04,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:04,772 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:04,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:30:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:04,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:30:04,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:30:06,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 163 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:30:10,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:10,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825681548] [2022-11-16 12:30:10,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825681548] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:30:10,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:10,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-16 12:30:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682157669] [2022-11-16 12:30:10,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:10,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:30:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:10,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:30:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:30:10,648 INFO L87 Difference]: Start difference. First operand 108 states and 158 transitions. Second operand has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:30:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:24,635 INFO L93 Difference]: Finished difference Result 357 states and 516 transitions. [2022-11-16 12:30:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 12:30:24,636 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-16 12:30:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:24,639 INFO L225 Difference]: With dead ends: 357 [2022-11-16 12:30:24,639 INFO L226 Difference]: Without dead ends: 257 [2022-11-16 12:30:24,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=729, Invalid=1433, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 12:30:24,641 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 654 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:24,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1612 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-16 12:30:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-16 12:30:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 134. [2022-11-16 12:30:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 123 states have (on average 1.4878048780487805) internal successors, (183), 125 states have internal predecessors, (183), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:30:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 201 transitions. [2022-11-16 12:30:24,676 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 201 transitions. Word has length 78 [2022-11-16 12:30:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:24,676 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 201 transitions. [2022-11-16 12:30:24,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:30:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 201 transitions. [2022-11-16 12:30:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 12:30:24,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:24,678 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:24,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:30:24,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:24,892 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:24,893 INFO L85 PathProgramCache]: Analyzing trace with hash -820893591, now seen corresponding path program 1 times [2022-11-16 12:30:24,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:24,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655262388] [2022-11-16 12:30:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:24,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:24,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:24,895 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:24,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:30:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:24,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:30:24,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 273 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:30:27,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 4 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:30:32,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:32,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655262388] [2022-11-16 12:30:32,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655262388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:30:32,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:32,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-16 12:30:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765468220] [2022-11-16 12:30:32,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:32,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 12:30:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 12:30:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:30:32,409 INFO L87 Difference]: Start difference. First operand 134 states and 201 transitions. Second operand has 34 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:30:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:45,364 INFO L93 Difference]: Finished difference Result 358 states and 522 transitions. [2022-11-16 12:30:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:30:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2022-11-16 12:30:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:45,368 INFO L225 Difference]: With dead ends: 358 [2022-11-16 12:30:45,368 INFO L226 Difference]: Without dead ends: 232 [2022-11-16 12:30:45,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=991, Invalid=2315, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 12:30:45,371 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 676 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:45,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1845 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-16 12:30:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-16 12:30:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 138. [2022-11-16 12:30:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 127 states have (on average 1.4960629921259843) internal successors, (190), 129 states have internal predecessors, (190), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:30:45,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 208 transitions. [2022-11-16 12:30:45,401 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 208 transitions. Word has length 89 [2022-11-16 12:30:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:45,401 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 208 transitions. [2022-11-16 12:30:45,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:30:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 208 transitions. [2022-11-16 12:30:45,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 12:30:45,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:45,403 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:45,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:45,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:45,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1264403958, now seen corresponding path program 2 times [2022-11-16 12:30:45,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:45,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967349809] [2022-11-16 12:30:45,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:30:45,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:45,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:45,620 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:45,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:30:45,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:30:45,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:30:45,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:30:45,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-16 12:30:45,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:30:45,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:45,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967349809] [2022-11-16 12:30:45,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967349809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:45,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:45,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:30:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449712552] [2022-11-16 12:30:45,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:45,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:30:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:30:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:30:45,835 INFO L87 Difference]: Start difference. First operand 138 states and 208 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:30:45,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:45,948 INFO L93 Difference]: Finished difference Result 163 states and 241 transitions. [2022-11-16 12:30:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:30:45,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 114 [2022-11-16 12:30:45,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:45,950 INFO L225 Difference]: With dead ends: 163 [2022-11-16 12:30:45,950 INFO L226 Difference]: Without dead ends: 138 [2022-11-16 12:30:45,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:30:45,952 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 32 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:45,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:30:45,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-16 12:30:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-16 12:30:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 129 states have internal predecessors, (188), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:30:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 206 transitions. [2022-11-16 12:30:45,983 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 206 transitions. Word has length 114 [2022-11-16 12:30:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:45,984 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 206 transitions. [2022-11-16 12:30:45,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:30:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 206 transitions. [2022-11-16 12:30:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 12:30:45,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:45,986 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:46,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:46,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:46,200 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:46,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1851209972, now seen corresponding path program 1 times [2022-11-16 12:30:46,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:46,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499182157] [2022-11-16 12:30:46,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:46,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:46,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:46,202 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:46,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 12:30:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:46,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:30:46,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 24 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:30:51,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:31:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 4 proven. 745 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:31:03,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:31:03,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499182157] [2022-11-16 12:31:03,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499182157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:31:03,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:31:03,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-16 12:31:03,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828796845] [2022-11-16 12:31:03,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:31:03,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-16 12:31:03,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:31:03,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-16 12:31:03,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 12:31:03,909 INFO L87 Difference]: Start difference. First operand 138 states and 206 transitions. Second operand has 50 states, 50 states have (on average 3.48) internal successors, (174), 50 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:32:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:01,150 INFO L93 Difference]: Finished difference Result 591 states and 864 transitions. [2022-11-16 12:32:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-16 12:32:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.48) internal successors, (174), 50 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 114 [2022-11-16 12:32:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:01,158 INFO L225 Difference]: With dead ends: 591 [2022-11-16 12:32:01,158 INFO L226 Difference]: Without dead ends: 461 [2022-11-16 12:32:01,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=2901, Invalid=6029, Unknown=0, NotChecked=0, Total=8930 [2022-11-16 12:32:01,162 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 2306 mSDsluCounter, 4808 mSDsCounter, 0 mSdLazyCounter, 4147 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 4492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 4147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:01,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 5017 Invalid, 4492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [345 Valid, 4147 Invalid, 0 Unknown, 0 Unchecked, 28.9s Time] [2022-11-16 12:32:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-16 12:32:01,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 206. [2022-11-16 12:32:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 195 states have (on average 1.5435897435897437) internal successors, (301), 197 states have internal predecessors, (301), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:32:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 319 transitions. [2022-11-16 12:32:01,231 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 319 transitions. Word has length 114 [2022-11-16 12:32:01,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:01,231 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 319 transitions. [2022-11-16 12:32:01,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.48) internal successors, (174), 50 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:32:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 319 transitions. [2022-11-16 12:32:01,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-16 12:32:01,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:01,233 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:01,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:01,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:01,447 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash -432692949, now seen corresponding path program 1 times [2022-11-16 12:32:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:01,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50389222] [2022-11-16 12:32:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:01,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:01,449 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:01,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:32:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:01,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:32:01,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-11-16 12:32:01,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-11-16 12:32:02,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:02,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50389222] [2022-11-16 12:32:02,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50389222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:32:02,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:32:02,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-16 12:32:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378782611] [2022-11-16 12:32:02,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:32:02,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:32:02,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:02,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:32:02,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:32:02,296 INFO L87 Difference]: Start difference. First operand 206 states and 319 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:32:02,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:02,604 INFO L93 Difference]: Finished difference Result 211 states and 323 transitions. [2022-11-16 12:32:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:32:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 119 [2022-11-16 12:32:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:02,608 INFO L225 Difference]: With dead ends: 211 [2022-11-16 12:32:02,608 INFO L226 Difference]: Without dead ends: 206 [2022-11-16 12:32:02,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:32:02,609 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 19 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:02,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 245 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:32:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-16 12:32:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-11-16 12:32:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 195 states have (on average 1.5384615384615385) internal successors, (300), 197 states have internal predecessors, (300), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:32:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2022-11-16 12:32:02,660 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 119 [2022-11-16 12:32:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:02,661 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2022-11-16 12:32:02,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:32:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2022-11-16 12:32:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 12:32:02,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:02,663 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:02,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:02,883 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1556286225, now seen corresponding path program 1 times [2022-11-16 12:32:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:02,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999648356] [2022-11-16 12:32:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:02,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:02,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:02,885 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:02,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 12:32:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:02,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:32:02,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-11-16 12:32:03,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:03,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:03,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999648356] [2022-11-16 12:32:03,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999648356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:03,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:03,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:32:03,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697280311] [2022-11-16 12:32:03,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:03,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:32:03,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:03,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:32:03,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:32:03,140 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:32:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:03,410 INFO L93 Difference]: Finished difference Result 219 states and 331 transitions. [2022-11-16 12:32:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:32:03,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 121 [2022-11-16 12:32:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:03,413 INFO L225 Difference]: With dead ends: 219 [2022-11-16 12:32:03,413 INFO L226 Difference]: Without dead ends: 213 [2022-11-16 12:32:03,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:32:03,423 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:03,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:32:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-16 12:32:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2022-11-16 12:32:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 200 states have (on average 1.525) internal successors, (305), 202 states have internal predecessors, (305), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:32:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 323 transitions. [2022-11-16 12:32:03,456 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 323 transitions. Word has length 121 [2022-11-16 12:32:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:03,456 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 323 transitions. [2022-11-16 12:32:03,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:32:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 323 transitions. [2022-11-16 12:32:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 12:32:03,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:03,458 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:03,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:32:03,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:03,672 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:03,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1613544527, now seen corresponding path program 1 times [2022-11-16 12:32:03,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:03,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752623773] [2022-11-16 12:32:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:03,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:03,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:03,674 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:03,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 12:32:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:03,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:32:03,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-11-16 12:32:03,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:03,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:03,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752623773] [2022-11-16 12:32:03,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752623773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:03,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:03,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:32:03,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973424879] [2022-11-16 12:32:03,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:03,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:32:03,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:32:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:32:03,976 INFO L87 Difference]: Start difference. First operand 211 states and 323 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:32:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:04,238 INFO L93 Difference]: Finished difference Result 217 states and 328 transitions. [2022-11-16 12:32:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:32:04,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 121 [2022-11-16 12:32:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:04,241 INFO L225 Difference]: With dead ends: 217 [2022-11-16 12:32:04,241 INFO L226 Difference]: Without dead ends: 199 [2022-11-16 12:32:04,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:32:04,242 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:04,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 296 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:32:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-16 12:32:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-16 12:32:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 188 states have (on average 1.5425531914893618) internal successors, (290), 191 states have internal predecessors, (290), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-16 12:32:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 305 transitions. [2022-11-16 12:32:04,291 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 305 transitions. Word has length 121 [2022-11-16 12:32:04,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:04,291 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 305 transitions. [2022-11-16 12:32:04,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:32:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 305 transitions. [2022-11-16 12:32:04,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-16 12:32:04,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:04,293 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:04,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:04,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:04,511 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash 564140262, now seen corresponding path program 1 times [2022-11-16 12:32:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409196300] [2022-11-16 12:32:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:04,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:04,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:04,514 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:04,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:32:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:04,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:32:04,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-16 12:32:05,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-16 12:32:05,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:05,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409196300] [2022-11-16 12:32:05,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409196300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:32:05,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:32:05,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-16 12:32:05,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605096144] [2022-11-16 12:32:05,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:32:05,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:32:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:32:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:32:05,445 INFO L87 Difference]: Start difference. First operand 199 states and 305 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:32:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:06,088 INFO L93 Difference]: Finished difference Result 226 states and 338 transitions. [2022-11-16 12:32:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:32:06,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 126 [2022-11-16 12:32:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:06,090 INFO L225 Difference]: With dead ends: 226 [2022-11-16 12:32:06,091 INFO L226 Difference]: Without dead ends: 196 [2022-11-16 12:32:06,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:32:06,092 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:06,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 374 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:32:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-16 12:32:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-16 12:32:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 186 states have (on average 1.3010752688172043) internal successors, (242), 188 states have internal predecessors, (242), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 12:32:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 254 transitions. [2022-11-16 12:32:06,129 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 254 transitions. Word has length 126 [2022-11-16 12:32:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:06,130 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 254 transitions. [2022-11-16 12:32:06,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:32:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 254 transitions. [2022-11-16 12:32:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 12:32:06,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:06,132 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:06,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:06,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:06,338 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash 300411547, now seen corresponding path program 2 times [2022-11-16 12:32:06,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:06,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367139966] [2022-11-16 12:32:06,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:32:06,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:06,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:06,339 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:06,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:32:06,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:32:06,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:32:06,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:32:06,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-11-16 12:32:07,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:08,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:08,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367139966] [2022-11-16 12:32:08,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367139966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:08,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1252297715] [2022-11-16 12:32:08,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:32:08,349 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:32:08,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:32:08,353 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:32:08,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-16 12:32:08,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:32:08,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:32:08,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:32:08,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-11-16 12:32:08,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-11-16 12:32:09,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1252297715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:32:09,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:32:09,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-11-16 12:32:09,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259112083] [2022-11-16 12:32:09,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:32:09,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:32:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:32:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:32:09,268 INFO L87 Difference]: Start difference. First operand 196 states and 254 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:32:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:10,224 INFO L93 Difference]: Finished difference Result 197 states and 255 transitions. [2022-11-16 12:32:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:32:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 130 [2022-11-16 12:32:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:10,225 INFO L225 Difference]: With dead ends: 197 [2022-11-16 12:32:10,225 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 12:32:10,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 391 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:32:10,227 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:10,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 276 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 7 Unchecked, 0.3s Time] [2022-11-16 12:32:10,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 12:32:10,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 12:32:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:10,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:32:10,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2022-11-16 12:32:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:10,229 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:32:10,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:32:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:32:10,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 12:32:10,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 12:32:10,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 12:32:10,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:10,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:10,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e51c29ae-2f54-4d75-8471-712d1d049dba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:10,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.