./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:17:00,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:17:00,566 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:17:00,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:17:00,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:17:00,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:17:00,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:17:00,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:17:00,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:17:00,600 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:17:00,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:17:00,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:17:00,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:17:00,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:17:00,603 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:17:00,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:17:00,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:17:00,604 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:17:00,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:17:00,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:17:00,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:17:00,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:17:00,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:17:00,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:17:00,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:17:00,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:17:00,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:17:00,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:17:00,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:17:00,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:17:00,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:17:00,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:17:00,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:17:00,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:17:00,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:17:00,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:17:00,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:17:00,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:17:00,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:17:00,614 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:17:00,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:17:00,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:17:00,615 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2023-11-29 03:17:00,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:17:00,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:17:00,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:17:00,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:17:00,906 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:17:00,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/bitvector/byte_add_2-2.i [2023-11-29 03:17:03,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:17:04,112 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:17:04,112 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/sv-benchmarks/c/bitvector/byte_add_2-2.i [2023-11-29 03:17:04,123 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/data/4c3e31b6c/35ab1077d85e4ae58dc9c765492e7fa8/FLAGdc16709ca [2023-11-29 03:17:04,139 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/data/4c3e31b6c/35ab1077d85e4ae58dc9c765492e7fa8 [2023-11-29 03:17:04,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:17:04,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:17:04,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:17:04,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:17:04,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:17:04,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23678203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04, skipping insertion in model container [2023-11-29 03:17:04,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,185 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:17:04,351 WARN L240 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_41e9cc24-34bd-4e3e-9557-cef74e8767d9/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2023-11-29 03:17:04,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:17:04,415 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:17:04,429 WARN L240 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_41e9cc24-34bd-4e3e-9557-cef74e8767d9/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2023-11-29 03:17:04,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:17:04,463 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:17:04,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04 WrapperNode [2023-11-29 03:17:04,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:17:04,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:17:04,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:17:04,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:17:04,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,520 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2023-11-29 03:17:04,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:17:04,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:17:04,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:17:04,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:17:04,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,551 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 03:17:04,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:17:04,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:17:04,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:17:04,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:17:04,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (1/1) ... [2023-11-29 03:17:04,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:17:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:04,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:17:04,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:17:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:17:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:17:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:17:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:17:04,719 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:17:04,721 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:17:05,085 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:17:05,114 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:17:05,114 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:17:05,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:17:05 BoogieIcfgContainer [2023-11-29 03:17:05,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:17:05,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:17:05,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:17:05,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:17:05,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:17:04" (1/3) ... [2023-11-29 03:17:05,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae77b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:17:05, skipping insertion in model container [2023-11-29 03:17:05,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:04" (2/3) ... [2023-11-29 03:17:05,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae77b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:17:05, skipping insertion in model container [2023-11-29 03:17:05,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:17:05" (3/3) ... [2023-11-29 03:17:05,126 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2023-11-29 03:17:05,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:17:05,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:17:05,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:17:05,199 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=LoopHeads, 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;@55bdb4b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:17:05,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:17:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.880952380952381) internal successors, (79), 43 states have internal predecessors, (79), 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) [2023-11-29 03:17:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 03:17:05,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:05,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:05,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:05,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:05,228 INFO L85 PathProgramCache]: Analyzing trace with hash -701051337, now seen corresponding path program 1 times [2023-11-29 03:17:05,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:05,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235884033] [2023-11-29 03:17:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:05,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:05,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:05,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235884033] [2023-11-29 03:17:05,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235884033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:05,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:17:05,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466089964] [2023-11-29 03:17:05,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:05,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:17:05,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:17:05,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:17:05,485 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.880952380952381) internal successors, (79), 43 states have internal predecessors, (79), 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-29 03:17:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:05,518 INFO L93 Difference]: Finished difference Result 62 states and 109 transitions. [2023-11-29 03:17:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:17:05,521 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2023-11-29 03:17:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:05,531 INFO L225 Difference]: With dead ends: 62 [2023-11-29 03:17:05,531 INFO L226 Difference]: Without dead ends: 42 [2023-11-29 03:17:05,535 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 [2023-11-29 03:17:05,539 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 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 [2023-11-29 03:17:05,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-29 03:17:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-29 03:17:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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) [2023-11-29 03:17:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 74 transitions. [2023-11-29 03:17:05,580 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 74 transitions. Word has length 13 [2023-11-29 03:17:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:05,581 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 74 transitions. [2023-11-29 03:17:05,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-29 03:17:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 74 transitions. [2023-11-29 03:17:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 03:17:05,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:05,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:05,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:17:05,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:05,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1267888409, now seen corresponding path program 1 times [2023-11-29 03:17:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157693805] [2023-11-29 03:17:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157693805] [2023-11-29 03:17:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157693805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:05,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:05,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:17:05,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122810175] [2023-11-29 03:17:05,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:05,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:17:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:17:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:17:05,765 INFO L87 Difference]: Start difference. First operand 42 states and 74 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-29 03:17:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:05,922 INFO L93 Difference]: Finished difference Result 98 states and 177 transitions. [2023-11-29 03:17:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:17:05,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-11-29 03:17:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:05,924 INFO L225 Difference]: With dead ends: 98 [2023-11-29 03:17:05,924 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 03:17:05,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:17:05,926 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:05,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 76 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 03:17:05,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2023-11-29 03:17:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.596774193548387) internal successors, (99), 62 states have internal predecessors, (99), 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) [2023-11-29 03:17:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 99 transitions. [2023-11-29 03:17:05,937 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 99 transitions. Word has length 13 [2023-11-29 03:17:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:05,938 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 99 transitions. [2023-11-29 03:17:05,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-29 03:17:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 99 transitions. [2023-11-29 03:17:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 03:17:05,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:05,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:05,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:17:05,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:05,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:05,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1612037902, now seen corresponding path program 1 times [2023-11-29 03:17:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:05,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064259780] [2023-11-29 03:17:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:06,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:06,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064259780] [2023-11-29 03:17:06,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064259780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:06,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:06,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:17:06,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954073542] [2023-11-29 03:17:06,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:06,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:06,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:17:06,100 INFO L87 Difference]: Start difference. First operand 63 states and 99 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-29 03:17:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:06,395 INFO L93 Difference]: Finished difference Result 155 states and 270 transitions. [2023-11-29 03:17:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2023-11-29 03:17:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:06,398 INFO L225 Difference]: With dead ends: 155 [2023-11-29 03:17:06,398 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 03:17:06,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:06,400 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 92 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:06,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 99 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:17:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 03:17:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2023-11-29 03:17:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.576470588235294) internal successors, (134), 85 states have internal predecessors, (134), 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) [2023-11-29 03:17:06,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 134 transitions. [2023-11-29 03:17:06,415 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 134 transitions. Word has length 19 [2023-11-29 03:17:06,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:06,416 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 134 transitions. [2023-11-29 03:17:06,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-29 03:17:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 134 transitions. [2023-11-29 03:17:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 03:17:06,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:06,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:06,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:17:06,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:06,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1944328577, now seen corresponding path program 1 times [2023-11-29 03:17:06,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:06,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148887365] [2023-11-29 03:17:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:17:06,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:06,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148887365] [2023-11-29 03:17:06,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148887365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:06,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:06,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:17:06,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046729424] [2023-11-29 03:17:06,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:06,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:06,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:17:06,581 INFO L87 Difference]: Start difference. First operand 86 states and 134 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-29 03:17:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:06,779 INFO L93 Difference]: Finished difference Result 247 states and 380 transitions. [2023-11-29 03:17:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:06,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 25 [2023-11-29 03:17:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:06,782 INFO L225 Difference]: With dead ends: 247 [2023-11-29 03:17:06,782 INFO L226 Difference]: Without dead ends: 173 [2023-11-29 03:17:06,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:06,784 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 94 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:06,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 198 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:17:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-29 03:17:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 94. [2023-11-29 03:17:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.5376344086021505) internal successors, (143), 93 states have internal predecessors, (143), 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) [2023-11-29 03:17:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 143 transitions. [2023-11-29 03:17:06,798 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 143 transitions. Word has length 25 [2023-11-29 03:17:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:06,798 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 143 transitions. [2023-11-29 03:17:06,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-29 03:17:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 143 transitions. [2023-11-29 03:17:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 03:17:06,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:06,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:17:06,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:06,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash 889628198, now seen corresponding path program 1 times [2023-11-29 03:17:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:06,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332480050] [2023-11-29 03:17:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:17:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332480050] [2023-11-29 03:17:06,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332480050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:06,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:06,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:17:06,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221422257] [2023-11-29 03:17:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:06,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:06,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:06,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:17:06,941 INFO L87 Difference]: Start difference. First operand 94 states and 143 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-29 03:17:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:07,157 INFO L93 Difference]: Finished difference Result 268 states and 406 transitions. [2023-11-29 03:17:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:07,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 26 [2023-11-29 03:17:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:07,160 INFO L225 Difference]: With dead ends: 268 [2023-11-29 03:17:07,160 INFO L226 Difference]: Without dead ends: 193 [2023-11-29 03:17:07,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:07,162 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 98 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:07,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 206 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:17:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-29 03:17:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 104. [2023-11-29 03:17:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.5145631067961165) internal successors, (156), 103 states have internal predecessors, (156), 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) [2023-11-29 03:17:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 156 transitions. [2023-11-29 03:17:07,177 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 156 transitions. Word has length 26 [2023-11-29 03:17:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:07,178 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 156 transitions. [2023-11-29 03:17:07,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-29 03:17:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 156 transitions. [2023-11-29 03:17:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 03:17:07,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:07,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:07,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:17:07,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:07,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -449843762, now seen corresponding path program 1 times [2023-11-29 03:17:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:07,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083035710] [2023-11-29 03:17:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:07,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:07,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:07,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083035710] [2023-11-29 03:17:07,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083035710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:07,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759311245] [2023-11-29 03:17:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:07,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:07,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:07,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:07,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:17:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:07,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:17:07,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:17:07,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:07,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759311245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:07,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:07,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-29 03:17:07,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556499262] [2023-11-29 03:17:07,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:07,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:07,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:07,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:07,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:17:07,517 INFO L87 Difference]: Start difference. First operand 104 states and 156 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-29 03:17:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:07,772 INFO L93 Difference]: Finished difference Result 221 states and 354 transitions. [2023-11-29 03:17:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 27 [2023-11-29 03:17:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:07,774 INFO L225 Difference]: With dead ends: 221 [2023-11-29 03:17:07,775 INFO L226 Difference]: Without dead ends: 149 [2023-11-29 03:17:07,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:17:07,776 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:07,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 134 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:17:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-29 03:17:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2023-11-29 03:17:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.446969696969697) internal successors, (191), 132 states have internal predecessors, (191), 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) [2023-11-29 03:17:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2023-11-29 03:17:07,790 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 27 [2023-11-29 03:17:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:07,790 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2023-11-29 03:17:07,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-29 03:17:07,791 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2023-11-29 03:17:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 03:17:07,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:07,793 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:07,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 03:17:07,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:07,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:08,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1572960125, now seen corresponding path program 1 times [2023-11-29 03:17:08,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:08,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128786419] [2023-11-29 03:17:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:08,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:08,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128786419] [2023-11-29 03:17:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128786419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531889300] [2023-11-29 03:17:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:08,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:08,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:08,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:08,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:17:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:08,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:17:08,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:17:08,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:08,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531889300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:08,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:08,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-29 03:17:08,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518608784] [2023-11-29 03:17:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:08,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:17:08,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:17:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:17:08,365 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-11-29 03:17:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:08,670 INFO L93 Difference]: Finished difference Result 553 states and 808 transitions. [2023-11-29 03:17:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:17:08,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 33 [2023-11-29 03:17:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:08,673 INFO L225 Difference]: With dead ends: 553 [2023-11-29 03:17:08,673 INFO L226 Difference]: Without dead ends: 411 [2023-11-29 03:17:08,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:17:08,675 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 205 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:08,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 374 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:17:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-11-29 03:17:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 230. [2023-11-29 03:17:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.4061135371179039) internal successors, (322), 229 states have internal predecessors, (322), 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) [2023-11-29 03:17:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 322 transitions. [2023-11-29 03:17:08,692 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 322 transitions. Word has length 33 [2023-11-29 03:17:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:08,692 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 322 transitions. [2023-11-29 03:17:08,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-11-29 03:17:08,692 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 322 transitions. [2023-11-29 03:17:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 03:17:08,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:08,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:08,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:17:08,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 03:17:08,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:08,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:08,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1983747632, now seen corresponding path program 1 times [2023-11-29 03:17:08,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:08,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995528756] [2023-11-29 03:17:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:08,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:09,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:09,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995528756] [2023-11-29 03:17:09,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995528756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:09,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522130392] [2023-11-29 03:17:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:09,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:09,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:09,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:09,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:17:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:17:09,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:17:09,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:09,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522130392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:09,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-11-29 03:17:09,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759104772] [2023-11-29 03:17:09,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:17:09,192 INFO L87 Difference]: Start difference. First operand 230 states and 322 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-29 03:17:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:09,412 INFO L93 Difference]: Finished difference Result 509 states and 741 transitions. [2023-11-29 03:17:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 34 [2023-11-29 03:17:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:09,415 INFO L225 Difference]: With dead ends: 509 [2023-11-29 03:17:09,415 INFO L226 Difference]: Without dead ends: 317 [2023-11-29 03:17:09,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:17:09,416 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 36 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:09,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 134 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:17:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-29 03:17:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 270. [2023-11-29 03:17:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.3754646840148699) internal successors, (370), 269 states have internal predecessors, (370), 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) [2023-11-29 03:17:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 370 transitions. [2023-11-29 03:17:09,432 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 370 transitions. Word has length 34 [2023-11-29 03:17:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:09,432 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 370 transitions. [2023-11-29 03:17:09,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-29 03:17:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 370 transitions. [2023-11-29 03:17:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 03:17:09,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:09,434 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:09,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:17:09,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:17:09,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:09,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1076199615, now seen corresponding path program 1 times [2023-11-29 03:17:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721252008] [2023-11-29 03:17:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 03:17:09,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:09,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721252008] [2023-11-29 03:17:09,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721252008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:09,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:09,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:17:09,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865438934] [2023-11-29 03:17:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:09,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:17:09,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:09,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:17:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:09,798 INFO L87 Difference]: Start difference. First operand 270 states and 370 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-11-29 03:17:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:10,149 INFO L93 Difference]: Finished difference Result 1018 states and 1392 transitions. [2023-11-29 03:17:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:17:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 40 [2023-11-29 03:17:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:10,154 INFO L225 Difference]: With dead ends: 1018 [2023-11-29 03:17:10,154 INFO L226 Difference]: Without dead ends: 784 [2023-11-29 03:17:10,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:17:10,156 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 189 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:10,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 366 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:17:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-11-29 03:17:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 270. [2023-11-29 03:17:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.3754646840148699) internal successors, (370), 269 states have internal predecessors, (370), 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) [2023-11-29 03:17:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 370 transitions. [2023-11-29 03:17:10,178 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 370 transitions. Word has length 40 [2023-11-29 03:17:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:10,178 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 370 transitions. [2023-11-29 03:17:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-11-29 03:17:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 370 transitions. [2023-11-29 03:17:10,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 03:17:10,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:10,180 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:10,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:17:10,180 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:10,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1087520423, now seen corresponding path program 1 times [2023-11-29 03:17:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:10,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569046451] [2023-11-29 03:17:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 03:17:10,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:10,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569046451] [2023-11-29 03:17:10,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569046451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:10,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:10,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:17:10,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580132971] [2023-11-29 03:17:10,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:10,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:17:10,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:17:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:17:10,353 INFO L87 Difference]: Start difference. First operand 270 states and 370 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-11-29 03:17:10,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:10,853 INFO L93 Difference]: Finished difference Result 1283 states and 1749 transitions. [2023-11-29 03:17:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:17:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 41 [2023-11-29 03:17:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:10,860 INFO L225 Difference]: With dead ends: 1283 [2023-11-29 03:17:10,860 INFO L226 Difference]: Without dead ends: 1049 [2023-11-29 03:17:10,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:17:10,862 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 284 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:10,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 621 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:17:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-11-29 03:17:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 270. [2023-11-29 03:17:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.3754646840148699) internal successors, (370), 269 states have internal predecessors, (370), 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) [2023-11-29 03:17:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 370 transitions. [2023-11-29 03:17:10,886 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 370 transitions. Word has length 41 [2023-11-29 03:17:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:10,886 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 370 transitions. [2023-11-29 03:17:10,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-11-29 03:17:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 370 transitions. [2023-11-29 03:17:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 03:17:10,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:10,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:10,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:17:10,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:10,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1156462875, now seen corresponding path program 1 times [2023-11-29 03:17:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096185062] [2023-11-29 03:17:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:10,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 03:17:11,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096185062] [2023-11-29 03:17:11,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096185062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:11,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:11,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:17:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012124341] [2023-11-29 03:17:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:11,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:17:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:11,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:17:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:17:11,028 INFO L87 Difference]: Start difference. First operand 270 states and 370 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2023-11-29 03:17:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:11,052 INFO L93 Difference]: Finished difference Result 518 states and 707 transitions. [2023-11-29 03:17:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:17:11,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 41 [2023-11-29 03:17:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:11,055 INFO L225 Difference]: With dead ends: 518 [2023-11-29 03:17:11,055 INFO L226 Difference]: Without dead ends: 256 [2023-11-29 03:17:11,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:17:11,056 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 61 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:11,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 67 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-29 03:17:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-29 03:17:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.3647058823529412) internal successors, (348), 255 states have internal predecessors, (348), 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) [2023-11-29 03:17:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 348 transitions. [2023-11-29 03:17:11,075 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 348 transitions. Word has length 41 [2023-11-29 03:17:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:11,075 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 348 transitions. [2023-11-29 03:17:11,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2023-11-29 03:17:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 348 transitions. [2023-11-29 03:17:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 03:17:11,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:11,076 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:11,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:17:11,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:11,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 248760094, now seen corresponding path program 1 times [2023-11-29 03:17:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:11,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981494272] [2023-11-29 03:17:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 03:17:11,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981494272] [2023-11-29 03:17:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981494272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:17:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090683559] [2023-11-29 03:17:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:11,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:17:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:17:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:17:11,165 INFO L87 Difference]: Start difference. First operand 256 states and 348 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-11-29 03:17:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:11,193 INFO L93 Difference]: Finished difference Result 364 states and 486 transitions. [2023-11-29 03:17:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:17:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 46 [2023-11-29 03:17:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:11,195 INFO L225 Difference]: With dead ends: 364 [2023-11-29 03:17:11,195 INFO L226 Difference]: Without dead ends: 321 [2023-11-29 03:17:11,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:17:11,196 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:11,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 130 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-29 03:17:11,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 315. [2023-11-29 03:17:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.3280254777070064) internal successors, (417), 314 states have internal predecessors, (417), 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) [2023-11-29 03:17:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 417 transitions. [2023-11-29 03:17:11,213 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 417 transitions. Word has length 46 [2023-11-29 03:17:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:11,213 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 417 transitions. [2023-11-29 03:17:11,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-11-29 03:17:11,214 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 417 transitions. [2023-11-29 03:17:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 03:17:11,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:11,215 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:17:11,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:11,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 523519708, now seen corresponding path program 1 times [2023-11-29 03:17:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579230827] [2023-11-29 03:17:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:17:11,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:11,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579230827] [2023-11-29 03:17:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579230827] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:11,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754182501] [2023-11-29 03:17:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:11,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:11,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:11,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:11,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:17:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:11,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:17:11,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:17:11,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:11,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754182501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:11,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:11,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-29 03:17:11,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691304363] [2023-11-29 03:17:11,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:11,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:11,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:11,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:17:11,467 INFO L87 Difference]: Start difference. First operand 315 states and 417 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2023-11-29 03:17:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:11,571 INFO L93 Difference]: Finished difference Result 675 states and 897 transitions. [2023-11-29 03:17:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 46 [2023-11-29 03:17:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:11,574 INFO L225 Difference]: With dead ends: 675 [2023-11-29 03:17:11,574 INFO L226 Difference]: Without dead ends: 334 [2023-11-29 03:17:11,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:17:11,576 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 53 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:11,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 73 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-29 03:17:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 259. [2023-11-29 03:17:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.310077519379845) internal successors, (338), 258 states have internal predecessors, (338), 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) [2023-11-29 03:17:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 338 transitions. [2023-11-29 03:17:11,597 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 338 transitions. Word has length 46 [2023-11-29 03:17:11,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:11,598 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 338 transitions. [2023-11-29 03:17:11,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2023-11-29 03:17:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 338 transitions. [2023-11-29 03:17:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 03:17:11,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:11,599 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:11,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 03:17:11,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:17:11,802 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:11,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1588650562, now seen corresponding path program 1 times [2023-11-29 03:17:11,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:11,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037684080] [2023-11-29 03:17:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 03:17:12,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:12,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037684080] [2023-11-29 03:17:12,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037684080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:12,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:12,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:17:12,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269054109] [2023-11-29 03:17:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:12,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:17:12,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:17:12,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:12,097 INFO L87 Difference]: Start difference. First operand 259 states and 338 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2023-11-29 03:17:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:12,247 INFO L93 Difference]: Finished difference Result 829 states and 1067 transitions. [2023-11-29 03:17:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:17:12,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 67 [2023-11-29 03:17:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:12,251 INFO L225 Difference]: With dead ends: 829 [2023-11-29 03:17:12,251 INFO L226 Difference]: Without dead ends: 586 [2023-11-29 03:17:12,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:17:12,253 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 162 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:12,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 166 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:12,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-29 03:17:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 389. [2023-11-29 03:17:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.3041237113402062) internal successors, (506), 388 states have internal predecessors, (506), 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) [2023-11-29 03:17:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 506 transitions. [2023-11-29 03:17:12,282 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 506 transitions. Word has length 67 [2023-11-29 03:17:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:12,282 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 506 transitions. [2023-11-29 03:17:12,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2023-11-29 03:17:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 506 transitions. [2023-11-29 03:17:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 03:17:12,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:12,284 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:12,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:17:12,284 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:12,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1710995324, now seen corresponding path program 1 times [2023-11-29 03:17:12,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:12,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354679464] [2023-11-29 03:17:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:17:12,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354679464] [2023-11-29 03:17:12,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354679464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:12,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530370587] [2023-11-29 03:17:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:12,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:12,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:12,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:17:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:12,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 03:17:13,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:17:13,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:17:13,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530370587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:13,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:17:13,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-11-29 03:17:13,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882787215] [2023-11-29 03:17:13,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:13,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:17:13,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:17:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:17:13,555 INFO L87 Difference]: Start difference. First operand 389 states and 506 transitions. Second operand has 20 states, 20 states have (on average 8.3) internal successors, (166), 19 states have internal predecessors, (166), 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) [2023-11-29 03:17:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:17,938 INFO L93 Difference]: Finished difference Result 3418 states and 4306 transitions. [2023-11-29 03:17:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-29 03:17:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.3) internal successors, (166), 19 states have internal predecessors, (166), 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 67 [2023-11-29 03:17:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:17,958 INFO L225 Difference]: With dead ends: 3418 [2023-11-29 03:17:17,959 INFO L226 Difference]: Without dead ends: 3410 [2023-11-29 03:17:17,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2092 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1712, Invalid=5944, Unknown=0, NotChecked=0, Total=7656 [2023-11-29 03:17:17,964 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 715 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:17,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1826 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 03:17:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2023-11-29 03:17:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 1128. [2023-11-29 03:17:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1127 states have (on average 1.3416149068322982) internal successors, (1512), 1127 states have internal predecessors, (1512), 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) [2023-11-29 03:17:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1512 transitions. [2023-11-29 03:17:18,084 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1512 transitions. Word has length 67 [2023-11-29 03:17:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:18,084 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1512 transitions. [2023-11-29 03:17:18,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.3) internal successors, (166), 19 states have internal predecessors, (166), 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) [2023-11-29 03:17:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1512 transitions. [2023-11-29 03:17:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:17:18,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:18,086 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:18,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:17:18,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:18,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:18,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1470770108, now seen corresponding path program 1 times [2023-11-29 03:17:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:18,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833386365] [2023-11-29 03:17:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 03:17:18,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:18,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833386365] [2023-11-29 03:17:18,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833386365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:18,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:18,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:17:18,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431002331] [2023-11-29 03:17:18,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:18,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:18,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:17:18,419 INFO L87 Difference]: Start difference. First operand 1128 states and 1512 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-29 03:17:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:18,535 INFO L93 Difference]: Finished difference Result 1150 states and 1545 transitions. [2023-11-29 03:17:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:18,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 69 [2023-11-29 03:17:18,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:18,542 INFO L225 Difference]: With dead ends: 1150 [2023-11-29 03:17:18,542 INFO L226 Difference]: Without dead ends: 1143 [2023-11-29 03:17:18,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:18,544 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:18,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 157 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2023-11-29 03:17:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1130. [2023-11-29 03:17:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 1.3410097431355181) internal successors, (1514), 1129 states have internal predecessors, (1514), 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) [2023-11-29 03:17:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1514 transitions. [2023-11-29 03:17:18,653 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1514 transitions. Word has length 69 [2023-11-29 03:17:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:18,654 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1514 transitions. [2023-11-29 03:17:18,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-29 03:17:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1514 transitions. [2023-11-29 03:17:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:17:18,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:18,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:18,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 03:17:18,657 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:18,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1419201887, now seen corresponding path program 1 times [2023-11-29 03:17:18,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:18,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455475400] [2023-11-29 03:17:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:17:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455475400] [2023-11-29 03:17:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455475400] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602967088] [2023-11-29 03:17:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:19,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:19,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:19,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:19,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:17:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:20,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:17:20,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:17:20,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 03:17:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602967088] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:20,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:17:20,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 9] total 21 [2023-11-29 03:17:20,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263607805] [2023-11-29 03:17:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:20,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:20,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:20,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:20,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:17:20,516 INFO L87 Difference]: Start difference. First operand 1130 states and 1514 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-29 03:17:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:20,658 INFO L93 Difference]: Finished difference Result 1137 states and 1522 transitions. [2023-11-29 03:17:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:20,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 69 [2023-11-29 03:17:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:20,665 INFO L225 Difference]: With dead ends: 1137 [2023-11-29 03:17:20,665 INFO L226 Difference]: Without dead ends: 1133 [2023-11-29 03:17:20,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:17:20,667 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 10 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:20,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 148 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-11-29 03:17:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1130. [2023-11-29 03:17:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 1.3410097431355181) internal successors, (1514), 1129 states have internal predecessors, (1514), 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) [2023-11-29 03:17:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1514 transitions. [2023-11-29 03:17:20,761 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1514 transitions. Word has length 69 [2023-11-29 03:17:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:20,761 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1514 transitions. [2023-11-29 03:17:20,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-29 03:17:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1514 transitions. [2023-11-29 03:17:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:17:20,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:20,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:20,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:17:20,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:17:20,966 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:20,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash 304237254, now seen corresponding path program 1 times [2023-11-29 03:17:20,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:20,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357370536] [2023-11-29 03:17:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:20,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:17:21,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357370536] [2023-11-29 03:17:21,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357370536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565914762] [2023-11-29 03:17:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:21,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:21,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:21,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:21,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:17:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:21,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:17:21,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 03:17:21,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:21,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565914762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:21,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:21,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-29 03:17:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864510604] [2023-11-29 03:17:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:21,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:17:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:17:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:17:21,392 INFO L87 Difference]: Start difference. First operand 1130 states and 1514 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-11-29 03:17:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:21,479 INFO L93 Difference]: Finished difference Result 1145 states and 1535 transitions. [2023-11-29 03:17:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:17:21,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 69 [2023-11-29 03:17:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:21,486 INFO L225 Difference]: With dead ends: 1145 [2023-11-29 03:17:21,486 INFO L226 Difference]: Without dead ends: 1138 [2023-11-29 03:17:21,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:17:21,488 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:21,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:21,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-11-29 03:17:21,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1130. [2023-11-29 03:17:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 1.3410097431355181) internal successors, (1514), 1129 states have internal predecessors, (1514), 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) [2023-11-29 03:17:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1514 transitions. [2023-11-29 03:17:21,612 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1514 transitions. Word has length 69 [2023-11-29 03:17:21,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:21,612 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1514 transitions. [2023-11-29 03:17:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-11-29 03:17:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1514 transitions. [2023-11-29 03:17:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:17:21,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:21,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:21,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:17:21,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:17:21,816 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:21,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1044352416, now seen corresponding path program 1 times [2023-11-29 03:17:21,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:21,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692117104] [2023-11-29 03:17:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:21,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:17:22,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:22,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692117104] [2023-11-29 03:17:22,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692117104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:22,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908360142] [2023-11-29 03:17:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:22,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:22,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:22,067 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:22,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:17:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:22,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:17:22,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:17:22,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:17:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908360142] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:22,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:17:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-29 03:17:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020011437] [2023-11-29 03:17:22,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:17:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:17:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:17:22,862 INFO L87 Difference]: Start difference. First operand 1130 states and 1514 transitions. Second operand has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 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) [2023-11-29 03:17:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:23,657 INFO L93 Difference]: Finished difference Result 2902 states and 3814 transitions. [2023-11-29 03:17:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:17:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 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 70 [2023-11-29 03:17:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:23,668 INFO L225 Difference]: With dead ends: 2902 [2023-11-29 03:17:23,668 INFO L226 Difference]: Without dead ends: 2898 [2023-11-29 03:17:23,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:17:23,670 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 373 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:23,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 784 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:17:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2023-11-29 03:17:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1777. [2023-11-29 03:17:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 1.3969594594594594) internal successors, (2481), 1776 states have internal predecessors, (2481), 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) [2023-11-29 03:17:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2481 transitions. [2023-11-29 03:17:23,802 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2481 transitions. Word has length 70 [2023-11-29 03:17:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:23,803 INFO L495 AbstractCegarLoop]: Abstraction has 1777 states and 2481 transitions. [2023-11-29 03:17:23,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 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) [2023-11-29 03:17:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2481 transitions. [2023-11-29 03:17:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:17:23,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:23,805 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:23,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:17:24,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:24,007 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:24,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1044292834, now seen corresponding path program 1 times [2023-11-29 03:17:24,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:24,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571582514] [2023-11-29 03:17:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-29 03:17:24,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571582514] [2023-11-29 03:17:24,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571582514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:24,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:24,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:17:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464527762] [2023-11-29 03:17:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:24,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:17:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:17:24,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:17:24,217 INFO L87 Difference]: Start difference. First operand 1777 states and 2481 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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) [2023-11-29 03:17:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:24,918 INFO L93 Difference]: Finished difference Result 4599 states and 6401 transitions. [2023-11-29 03:17:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:17:24,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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 70 [2023-11-29 03:17:24,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:24,939 INFO L225 Difference]: With dead ends: 4599 [2023-11-29 03:17:24,939 INFO L226 Difference]: Without dead ends: 3701 [2023-11-29 03:17:24,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:17:24,942 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 333 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:24,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 587 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:17:24,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2023-11-29 03:17:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 1777. [2023-11-29 03:17:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 1.3963963963963963) internal successors, (2480), 1776 states have internal predecessors, (2480), 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) [2023-11-29 03:17:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2480 transitions. [2023-11-29 03:17:25,116 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2480 transitions. Word has length 70 [2023-11-29 03:17:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:25,116 INFO L495 AbstractCegarLoop]: Abstraction has 1777 states and 2480 transitions. [2023-11-29 03:17:25,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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) [2023-11-29 03:17:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2480 transitions. [2023-11-29 03:17:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 03:17:25,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:25,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:25,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 03:17:25,119 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:25,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash -226889290, now seen corresponding path program 1 times [2023-11-29 03:17:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:25,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202140257] [2023-11-29 03:17:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:25,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 03:17:25,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:25,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202140257] [2023-11-29 03:17:25,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202140257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:25,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067039986] [2023-11-29 03:17:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:25,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:25,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:25,573 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:25,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:17:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:26,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 03:17:26,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:26,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:17:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067039986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:27,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:17:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 13] total 34 [2023-11-29 03:17:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223325679] [2023-11-29 03:17:27,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:27,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 03:17:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:27,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 03:17:27,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:17:27,256 INFO L87 Difference]: Start difference. First operand 1777 states and 2480 transitions. Second operand has 35 states, 35 states have (on average 5.485714285714286) internal successors, (192), 34 states have internal predecessors, (192), 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) [2023-11-29 03:17:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:31,501 INFO L93 Difference]: Finished difference Result 11770 states and 15876 transitions. [2023-11-29 03:17:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-29 03:17:31,502 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.485714285714286) internal successors, (192), 34 states have internal predecessors, (192), 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 71 [2023-11-29 03:17:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:31,538 INFO L225 Difference]: With dead ends: 11770 [2023-11-29 03:17:31,538 INFO L226 Difference]: Without dead ends: 10009 [2023-11-29 03:17:31,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2975 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2172, Invalid=8540, Unknown=0, NotChecked=0, Total=10712 [2023-11-29 03:17:31,545 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1476 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:31,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2315 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:17:31,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10009 states. [2023-11-29 03:17:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10009 to 3329. [2023-11-29 03:17:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 3328 states have (on average 1.3864182692307692) internal successors, (4614), 3328 states have internal predecessors, (4614), 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) [2023-11-29 03:17:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 4614 transitions. [2023-11-29 03:17:31,837 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 4614 transitions. Word has length 71 [2023-11-29 03:17:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:31,837 INFO L495 AbstractCegarLoop]: Abstraction has 3329 states and 4614 transitions. [2023-11-29 03:17:31,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.485714285714286) internal successors, (192), 34 states have internal predecessors, (192), 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) [2023-11-29 03:17:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 4614 transitions. [2023-11-29 03:17:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 03:17:31,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:31,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:31,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:17:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:32,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:32,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash -19758697, now seen corresponding path program 1 times [2023-11-29 03:17:32,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:32,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502609349] [2023-11-29 03:17:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:32,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:17:32,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:17:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:17:32,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:17:32,258 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:17:32,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 03:17:32,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 03:17:32,265 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:32,269 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:17:32,324 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-29 03:17:32,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated [2023-11-29 03:17:32,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-29 03:17:32,326 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated [2023-11-29 03:17:32,326 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-29 03:17:32,326 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-29 03:17:32,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:17:32 BoogieIcfgContainer [2023-11-29 03:17:32,346 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:17:32,346 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:17:32,347 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:17:32,347 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:17:32,347 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:17:05" (3/4) ... [2023-11-29 03:17:32,349 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 03:17:32,351 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:17:32,351 INFO L158 Benchmark]: Toolchain (without parser) took 28207.08ms. Allocated memory was 163.6MB in the beginning and 413.1MB in the end (delta: 249.6MB). Free memory was 135.2MB in the beginning and 368.4MB in the end (delta: -233.2MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2023-11-29 03:17:32,352 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:17:32,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.16ms. Allocated memory is still 163.6MB. Free memory was 134.8MB in the beginning and 121.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 03:17:32,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.65ms. Allocated memory is still 163.6MB. Free memory was 121.8MB in the beginning and 118.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:17:32,353 INFO L158 Benchmark]: Boogie Preprocessor took 51.19ms. Allocated memory is still 163.6MB. Free memory was 118.9MB in the beginning and 116.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:17:32,353 INFO L158 Benchmark]: RCFGBuilder took 541.98ms. Allocated memory is still 163.6MB. Free memory was 116.0MB in the beginning and 94.2MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 03:17:32,354 INFO L158 Benchmark]: TraceAbstraction took 27228.44ms. Allocated memory was 163.6MB in the beginning and 413.1MB in the end (delta: 249.6MB). Free memory was 93.3MB in the beginning and 368.4MB in the end (delta: -275.1MB). Peak memory consumption was 165.9MB. Max. memory is 16.1GB. [2023-11-29 03:17:32,354 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 413.1MB. Free memory is still 368.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:17:32,356 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.16ms. Allocated memory is still 163.6MB. Free memory was 134.8MB in the beginning and 121.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.65ms. Allocated memory is still 163.6MB. Free memory was 121.8MB in the beginning and 118.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.19ms. Allocated memory is still 163.6MB. Free memory was 118.9MB in the beginning and 116.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 541.98ms. Allocated memory is still 163.6MB. Free memory was 116.0MB in the beginning and 94.2MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 27228.44ms. Allocated memory was 163.6MB in the beginning and 413.1MB in the end (delta: 249.6MB). Free memory was 93.3MB in the beginning and 368.4MB in the end (delta: -275.1MB). Peak memory consumption was 165.9MB. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 413.1MB. Free memory is still 368.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 25]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 116. Possible FailurePath: [L124] unsigned int a, b, r; [L125] a = __VERIFIER_nondet_uint() [L127] b = 234770789 [L129] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=4] [L59] COND TRUE a3 == (unsigned char)0 [L60] na = na - 1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=3] [L61] COND TRUE a2 == (unsigned char)0 [L62] na = na - 1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=2] [L63] COND TRUE a1 == (unsigned char)0 [L64] na = na - 1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=1] [L68] nb = (unsigned char)4 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=1, nb=4] [L69] COND FALSE !(b3 == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=1, nb=4] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=0] [L83] COND TRUE i < na VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L89] COND TRUE i < nb VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=256] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=256] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=256] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=256] [L95] COND TRUE partial_sum > ((unsigned char)255) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L104] i = i + (unsigned char)1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=1, na=1, nb=4, partial_sum=0, r0=0] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L83] COND FALSE !(i < na) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L89] COND TRUE i < nb VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L91] COND TRUE i == (unsigned char)1 [L91] partial_sum = partial_sum + b1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L104] i = i + (unsigned char)1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L83] COND FALSE !(i < na) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L89] COND TRUE i < nb VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L92] COND TRUE i == (unsigned char)2 [L92] partial_sum = partial_sum + b2 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82, r2=254] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82, r2=254] [L104] i = i + (unsigned char)1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=254, r0=0, r1=82, r2=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L83] COND FALSE !(i < na) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L89] COND TRUE i < nb VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L93] COND TRUE i == (unsigned char)3 [L93] partial_sum = partial_sum + b3 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L104] i = i + (unsigned char)1 VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L107] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) VAL [\old(a)=155, \old(b)=234770789, a0=-4294967141, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; [L129] RET, EXPR mp_add(a, b) [L129] r = mp_add(a, b) [L131] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.1s, OverallIterations: 22, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4274 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4274 mSDsluCounter, 8645 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6736 mSDsCounter, 282 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5610 IncrementalHoareTripleChecker+Invalid, 5892 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 282 mSolverCounterUnsat, 1909 mSDtfsCounter, 5610 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1042 GetRequests, 732 SyntacticMatches, 10 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5342 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3329occurred in iteration=21, InterpolantAutomatonStates: 240, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 14052 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 1515 NumberOfCodeBlocks, 1515 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1685 ConstructedInterpolants, 0 QuantifiedInterpolants, 9703 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1458 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 34 InterpolantComputations, 18 PerfectInterpolantSequences, 1067/1697 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 [2023-11-29 03:17:32,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:17:34,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:17:34,419 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 03:17:34,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:17:34,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:17:34,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:17:34,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:17:34,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:17:34,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:17:34,471 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:17:34,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:17:34,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:17:34,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:17:34,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:17:34,475 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:17:34,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:17:34,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:17:34,477 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:17:34,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:17:34,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:17:34,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:17:34,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:17:34,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:17:34,480 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:17:34,480 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 03:17:34,481 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 03:17:34,481 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:17:34,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:17:34,482 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:17:34,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:17:34,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:17:34,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:17:34,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:17:34,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:17:34,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:17:34,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:17:34,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:17:34,486 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 03:17:34,486 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 03:17:34,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:17:34,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:17:34,487 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:17:34,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:17:34,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:17:34,488 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 03:17:34,488 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2023-11-29 03:17:34,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:17:34,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:17:34,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:17:34,844 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:17:34,845 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:17:34,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/bitvector/byte_add_2-2.i [2023-11-29 03:17:37,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:17:38,007 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:17:38,008 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/sv-benchmarks/c/bitvector/byte_add_2-2.i [2023-11-29 03:17:38,017 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/data/64b6a09e1/a6a3946f668e497c8fa0582ae1aba2af/FLAG037b3a74c [2023-11-29 03:17:38,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/data/64b6a09e1/a6a3946f668e497c8fa0582ae1aba2af [2023-11-29 03:17:38,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:17:38,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:17:38,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:17:38,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:17:38,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:17:38,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4fbc3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38, skipping insertion in model container [2023-11-29 03:17:38,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:17:38,229 WARN L240 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_41e9cc24-34bd-4e3e-9557-cef74e8767d9/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2023-11-29 03:17:38,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:17:38,293 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:17:38,306 WARN L240 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_41e9cc24-34bd-4e3e-9557-cef74e8767d9/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2023-11-29 03:17:38,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:17:38,351 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:17:38,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38 WrapperNode [2023-11-29 03:17:38,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:17:38,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:17:38,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:17:38,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:17:38,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,402 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2023-11-29 03:17:38,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:17:38,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:17:38,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:17:38,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:17:38,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,434 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 03:17:38,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:17:38,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:17:38,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:17:38,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:17:38,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (1/1) ... [2023-11-29 03:17:38,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:17:38,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:38,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:17:38,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:17:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:17:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 03:17:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:17:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:17:38,640 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:17:38,643 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:17:38,910 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:17:38,947 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:17:38,947 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:17:38,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:17:38 BoogieIcfgContainer [2023-11-29 03:17:38,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:17:38,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:17:38,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:17:38,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:17:38,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:17:38" (1/3) ... [2023-11-29 03:17:38,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4cfa55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:17:38, skipping insertion in model container [2023-11-29 03:17:38,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:38" (2/3) ... [2023-11-29 03:17:38,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4cfa55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:17:38, skipping insertion in model container [2023-11-29 03:17:38,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:17:38" (3/3) ... [2023-11-29 03:17:38,958 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2023-11-29 03:17:38,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:17:38,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:17:39,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:17:39,030 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=LoopHeads, 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;@69d86b10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:17:39,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:17:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 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) [2023-11-29 03:17:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 03:17:39,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:39,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:39,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:39,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash 459643034, now seen corresponding path program 1 times [2023-11-29 03:17:39,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:39,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648399058] [2023-11-29 03:17:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:39,058 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 [2023-11-29 03:17:39,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:39,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:39,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:39,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:17:39,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:39,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:39,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648399058] [2023-11-29 03:17:39,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648399058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:39,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:39,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:17:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941651971] [2023-11-29 03:17:39,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:39,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:17:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:39,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:17:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:17:39,200 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-11-29 03:17:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:39,232 INFO L93 Difference]: Finished difference Result 50 states and 85 transitions. [2023-11-29 03:17:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:17:39,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2023-11-29 03:17:39,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:39,242 INFO L225 Difference]: With dead ends: 50 [2023-11-29 03:17:39,242 INFO L226 Difference]: Without dead ends: 36 [2023-11-29 03:17:39,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:17:39,248 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 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 [2023-11-29 03:17:39,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-29 03:17:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-29 03:17:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 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) [2023-11-29 03:17:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2023-11-29 03:17:39,314 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 10 [2023-11-29 03:17:39,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:39,315 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2023-11-29 03:17:39,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-11-29 03:17:39,315 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2023-11-29 03:17:39,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 03:17:39,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:39,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:39,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-29 03:17:39,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:39,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:39,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:39,520 INFO L85 PathProgramCache]: Analyzing trace with hash 371044600, now seen corresponding path program 1 times [2023-11-29 03:17:39,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:39,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276579617] [2023-11-29 03:17:39,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:39,521 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 [2023-11-29 03:17:39,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:39,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:39,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:39,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:39,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:39,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:39,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:39,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276579617] [2023-11-29 03:17:39,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276579617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:39,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:39,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:17:39,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874709268] [2023-11-29 03:17:39,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:39,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:39,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:39,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:39,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:17:39,616 INFO L87 Difference]: Start difference. First operand 36 states and 62 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 03:17:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:39,787 INFO L93 Difference]: Finished difference Result 109 states and 195 transitions. [2023-11-29 03:17:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:39,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2023-11-29 03:17:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:39,789 INFO L225 Difference]: With dead ends: 109 [2023-11-29 03:17:39,789 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 03:17:39,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:17:39,791 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 88 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:39,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 122 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 03:17:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2023-11-29 03:17:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.641025641025641) internal successors, (128), 78 states have internal predecessors, (128), 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) [2023-11-29 03:17:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2023-11-29 03:17:39,808 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 10 [2023-11-29 03:17:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:39,808 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2023-11-29 03:17:39,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 03:17:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2023-11-29 03:17:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 03:17:39,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:39,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:39,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 03:17:40,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:40,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:40,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -450690481, now seen corresponding path program 1 times [2023-11-29 03:17:40,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:40,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983871064] [2023-11-29 03:17:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:40,016 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 [2023-11-29 03:17:40,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:40,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:40,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:17:40,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:40,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:40,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:40,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983871064] [2023-11-29 03:17:40,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983871064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:40,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:40,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:17:40,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827123587] [2023-11-29 03:17:40,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:40,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:17:40,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:17:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:17:40,104 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-11-29 03:17:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:40,123 INFO L93 Difference]: Finished difference Result 83 states and 131 transitions. [2023-11-29 03:17:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:17:40,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2023-11-29 03:17:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:40,125 INFO L225 Difference]: With dead ends: 83 [2023-11-29 03:17:40,125 INFO L226 Difference]: Without dead ends: 53 [2023-11-29 03:17:40,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:17:40,128 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 51 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:40,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 55 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-29 03:17:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-29 03:17:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.5) internal successors, (78), 52 states have internal predecessors, (78), 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) [2023-11-29 03:17:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 78 transitions. [2023-11-29 03:17:40,144 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 78 transitions. Word has length 11 [2023-11-29 03:17:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:40,144 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 78 transitions. [2023-11-29 03:17:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-11-29 03:17:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 78 transitions. [2023-11-29 03:17:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 03:17:40,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:40,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:40,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 03:17:40,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:40,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:40,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:40,349 INFO L85 PathProgramCache]: Analyzing trace with hash -171126915, now seen corresponding path program 1 times [2023-11-29 03:17:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:40,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681042661] [2023-11-29 03:17:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:40,350 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 [2023-11-29 03:17:40,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:40,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:40,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:40,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:40,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:40,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:40,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681042661] [2023-11-29 03:17:40,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681042661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:40,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:40,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:17:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049954975] [2023-11-29 03:17:40,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:40,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:40,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:17:40,444 INFO L87 Difference]: Start difference. First operand 53 states and 78 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-29 03:17:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:40,572 INFO L93 Difference]: Finished difference Result 144 states and 213 transitions. [2023-11-29 03:17:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:40,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-29 03:17:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:40,574 INFO L225 Difference]: With dead ends: 144 [2023-11-29 03:17:40,574 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 03:17:40,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:17:40,576 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 84 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:40,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 122 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 03:17:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 58. [2023-11-29 03:17:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.456140350877193) internal successors, (83), 57 states have internal predecessors, (83), 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) [2023-11-29 03:17:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2023-11-29 03:17:40,588 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 23 [2023-11-29 03:17:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:40,588 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2023-11-29 03:17:40,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-29 03:17:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2023-11-29 03:17:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 03:17:40,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:40,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:40,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 03:17:40,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:40,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:40,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1205485431, now seen corresponding path program 1 times [2023-11-29 03:17:40,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:40,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040875189] [2023-11-29 03:17:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:40,793 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 [2023-11-29 03:17:40,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:40,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:40,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:17:40,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:40,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:40,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:40,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040875189] [2023-11-29 03:17:40,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040875189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:40,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:40,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:17:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337737953] [2023-11-29 03:17:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:40,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:17:40,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:40,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:17:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:40,903 INFO L87 Difference]: Start difference. First operand 58 states and 83 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-29 03:17:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:41,069 INFO L93 Difference]: Finished difference Result 190 states and 281 transitions. [2023-11-29 03:17:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:41,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2023-11-29 03:17:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:41,072 INFO L225 Difference]: With dead ends: 190 [2023-11-29 03:17:41,072 INFO L226 Difference]: Without dead ends: 147 [2023-11-29 03:17:41,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:41,074 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 132 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:41,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 265 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-29 03:17:41,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 58. [2023-11-29 03:17:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.456140350877193) internal successors, (83), 57 states have internal predecessors, (83), 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) [2023-11-29 03:17:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2023-11-29 03:17:41,085 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 24 [2023-11-29 03:17:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:41,086 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2023-11-29 03:17:41,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-29 03:17:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2023-11-29 03:17:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 03:17:41,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:41,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:41,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 03:17:41,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:41,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:41,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:41,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1409794344, now seen corresponding path program 1 times [2023-11-29 03:17:41,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:41,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580198187] [2023-11-29 03:17:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:41,292 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 [2023-11-29 03:17:41,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:41,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:41,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:41,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:17:41,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:41,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:41,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:41,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580198187] [2023-11-29 03:17:41,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580198187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:41,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:41,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:17:41,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299762662] [2023-11-29 03:17:41,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:41,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:17:41,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:17:41,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:17:41,423 INFO L87 Difference]: Start difference. First operand 58 states and 83 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2023-11-29 03:17:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:41,629 INFO L93 Difference]: Finished difference Result 233 states and 343 transitions. [2023-11-29 03:17:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:17:41,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2023-11-29 03:17:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:41,631 INFO L225 Difference]: With dead ends: 233 [2023-11-29 03:17:41,631 INFO L226 Difference]: Without dead ends: 190 [2023-11-29 03:17:41,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:17:41,633 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 220 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:41,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 626 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:17:41,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-29 03:17:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 90. [2023-11-29 03:17:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.4382022471910112) internal successors, (128), 89 states have internal predecessors, (128), 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) [2023-11-29 03:17:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 128 transitions. [2023-11-29 03:17:41,648 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 128 transitions. Word has length 25 [2023-11-29 03:17:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:41,649 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 128 transitions. [2023-11-29 03:17:41,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2023-11-29 03:17:41,649 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 128 transitions. [2023-11-29 03:17:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 03:17:41,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:41,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:41,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:41,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:41,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1628649062, now seen corresponding path program 1 times [2023-11-29 03:17:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:41,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260644847] [2023-11-29 03:17:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:41,855 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 [2023-11-29 03:17:41,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:41,862 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:41,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:41,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:17:41,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:41,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:41,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260644847] [2023-11-29 03:17:41,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260644847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:41,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:41,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:17:41,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555760665] [2023-11-29 03:17:41,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:41,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:17:41,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:17:41,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:17:41,979 INFO L87 Difference]: Start difference. First operand 90 states and 128 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2023-11-29 03:17:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:42,262 INFO L93 Difference]: Finished difference Result 232 states and 340 transitions. [2023-11-29 03:17:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:17:42,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2023-11-29 03:17:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:42,264 INFO L225 Difference]: With dead ends: 232 [2023-11-29 03:17:42,264 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 03:17:42,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:17:42,265 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 157 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:42,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 367 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:17:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 03:17:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 85. [2023-11-29 03:17:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 84 states have internal predecessors, (122), 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) [2023-11-29 03:17:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2023-11-29 03:17:42,277 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 25 [2023-11-29 03:17:42,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:42,278 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2023-11-29 03:17:42,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2023-11-29 03:17:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2023-11-29 03:17:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 03:17:42,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:42,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:42,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 03:17:42,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:42,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:42,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1173091825, now seen corresponding path program 1 times [2023-11-29 03:17:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:42,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301248278] [2023-11-29 03:17:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:42,485 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 [2023-11-29 03:17:42,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:42,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:42,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:17:42,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:42,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:42,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301248278] [2023-11-29 03:17:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301248278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:42,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:42,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:17:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640930708] [2023-11-29 03:17:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:42,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:17:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:17:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:42,636 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2023-11-29 03:17:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:42,785 INFO L93 Difference]: Finished difference Result 196 states and 300 transitions. [2023-11-29 03:17:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:42,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2023-11-29 03:17:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:42,787 INFO L225 Difference]: With dead ends: 196 [2023-11-29 03:17:42,787 INFO L226 Difference]: Without dead ends: 125 [2023-11-29 03:17:42,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:42,788 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:42,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 42 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-29 03:17:42,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2023-11-29 03:17:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3416666666666666) internal successors, (161), 120 states have internal predecessors, (161), 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) [2023-11-29 03:17:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 161 transitions. [2023-11-29 03:17:42,801 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 161 transitions. Word has length 27 [2023-11-29 03:17:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:42,801 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 161 transitions. [2023-11-29 03:17:42,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2023-11-29 03:17:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 161 transitions. [2023-11-29 03:17:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 03:17:42,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:42,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:42,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:43,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:43,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:43,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1358205788, now seen corresponding path program 1 times [2023-11-29 03:17:43,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:43,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900426460] [2023-11-29 03:17:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:43,006 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 [2023-11-29 03:17:43,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:43,007 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:43,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:43,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:17:43,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:43,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:43,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900426460] [2023-11-29 03:17:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900426460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:43,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:43,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:17:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80714530] [2023-11-29 03:17:43,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:43,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:17:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:17:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:43,144 INFO L87 Difference]: Start difference. First operand 121 states and 161 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-11-29 03:17:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:43,336 INFO L93 Difference]: Finished difference Result 258 states and 345 transitions. [2023-11-29 03:17:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:43,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2023-11-29 03:17:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:43,338 INFO L225 Difference]: With dead ends: 258 [2023-11-29 03:17:43,339 INFO L226 Difference]: Without dead ends: 192 [2023-11-29 03:17:43,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:43,340 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 69 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:43,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 113 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:17:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-29 03:17:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2023-11-29 03:17:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 173 states have internal predecessors, (232), 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) [2023-11-29 03:17:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2023-11-29 03:17:43,356 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 40 [2023-11-29 03:17:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:43,357 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2023-11-29 03:17:43,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-11-29 03:17:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2023-11-29 03:17:43,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 03:17:43,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:43,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:43,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:43,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:43,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:43,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:43,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1344319466, now seen corresponding path program 1 times [2023-11-29 03:17:43,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:43,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76316393] [2023-11-29 03:17:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:43,563 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 [2023-11-29 03:17:43,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:43,564 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:43,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:43,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:17:43,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:43,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:43,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76316393] [2023-11-29 03:17:43,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76316393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:43,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:43,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:17:43,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708053446] [2023-11-29 03:17:43,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:17:43,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:43,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:17:43,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:17:43,715 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-11-29 03:17:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:44,021 INFO L93 Difference]: Finished difference Result 327 states and 437 transitions. [2023-11-29 03:17:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:17:44,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2023-11-29 03:17:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:44,024 INFO L225 Difference]: With dead ends: 327 [2023-11-29 03:17:44,024 INFO L226 Difference]: Without dead ends: 261 [2023-11-29 03:17:44,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:17:44,026 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 112 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:44,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 236 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:17:44,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-29 03:17:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 174. [2023-11-29 03:17:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 173 states have internal predecessors, (232), 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) [2023-11-29 03:17:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2023-11-29 03:17:44,042 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 41 [2023-11-29 03:17:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:44,043 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2023-11-29 03:17:44,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-11-29 03:17:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2023-11-29 03:17:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 03:17:44,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:44,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:44,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 03:17:44,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:44,248 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:44,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:44,248 INFO L85 PathProgramCache]: Analyzing trace with hash -278747559, now seen corresponding path program 1 times [2023-11-29 03:17:44,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:44,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987002165] [2023-11-29 03:17:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:44,249 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 [2023-11-29 03:17:44,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:44,250 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:44,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:17:44,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:44,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:44,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:44,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987002165] [2023-11-29 03:17:44,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987002165] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:44,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:17:44,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 03:17:44,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2156667] [2023-11-29 03:17:44,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:44,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:17:44,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:17:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:17:44,575 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-11-29 03:17:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:44,919 INFO L93 Difference]: Finished difference Result 594 states and 821 transitions. [2023-11-29 03:17:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:17:44,920 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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 42 [2023-11-29 03:17:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:44,923 INFO L225 Difference]: With dead ends: 594 [2023-11-29 03:17:44,923 INFO L226 Difference]: Without dead ends: 441 [2023-11-29 03:17:44,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:17:44,924 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 333 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:44,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 322 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:17:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-29 03:17:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 248. [2023-11-29 03:17:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.4210526315789473) internal successors, (351), 247 states have internal predecessors, (351), 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) [2023-11-29 03:17:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 351 transitions. [2023-11-29 03:17:44,953 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 351 transitions. Word has length 42 [2023-11-29 03:17:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:44,954 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 351 transitions. [2023-11-29 03:17:44,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-11-29 03:17:44,954 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 351 transitions. [2023-11-29 03:17:44,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 03:17:44,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:44,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:44,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 03:17:45,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:45,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:45,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash 422317019, now seen corresponding path program 1 times [2023-11-29 03:17:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:45,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031376679] [2023-11-29 03:17:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:45,157 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 [2023-11-29 03:17:45,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:45,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:45,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:45,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:17:45,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:45,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:45,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:45,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031376679] [2023-11-29 03:17:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031376679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:45,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:17:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 03:17:45,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541697302] [2023-11-29 03:17:45,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:45,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:17:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:17:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:17:45,451 INFO L87 Difference]: Start difference. First operand 248 states and 351 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2023-11-29 03:17:45,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:45,858 INFO L93 Difference]: Finished difference Result 781 states and 1238 transitions. [2023-11-29 03:17:45,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:17:45,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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 42 [2023-11-29 03:17:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:45,863 INFO L225 Difference]: With dead ends: 781 [2023-11-29 03:17:45,863 INFO L226 Difference]: Without dead ends: 553 [2023-11-29 03:17:45,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:45,864 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 259 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:45,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 76 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:17:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-11-29 03:17:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 470. [2023-11-29 03:17:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.4541577825159915) internal successors, (682), 469 states have internal predecessors, (682), 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) [2023-11-29 03:17:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 682 transitions. [2023-11-29 03:17:45,905 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 682 transitions. Word has length 42 [2023-11-29 03:17:45,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:45,905 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 682 transitions. [2023-11-29 03:17:45,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2023-11-29 03:17:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 682 transitions. [2023-11-29 03:17:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 03:17:45,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:45,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:45,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 03:17:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:46,109 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:46,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash -961547971, now seen corresponding path program 1 times [2023-11-29 03:17:46,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:46,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527649631] [2023-11-29 03:17:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:46,110 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 [2023-11-29 03:17:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:46,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:46,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:17:46,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 03:17:46,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 03:17:46,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:46,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527649631] [2023-11-29 03:17:46,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527649631] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:46,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:17:46,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 03:17:46,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153971594] [2023-11-29 03:17:46,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:46,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:17:46,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:46,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:17:46,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:17:46,399 INFO L87 Difference]: Start difference. First operand 470 states and 682 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 03:17:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:46,674 INFO L93 Difference]: Finished difference Result 1203 states and 1667 transitions. [2023-11-29 03:17:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:17:46,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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 68 [2023-11-29 03:17:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:46,679 INFO L225 Difference]: With dead ends: 1203 [2023-11-29 03:17:46,679 INFO L226 Difference]: Without dead ends: 754 [2023-11-29 03:17:46,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:17:46,681 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 221 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:46,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 250 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-29 03:17:46,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 463. [2023-11-29 03:17:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.406926406926407) internal successors, (650), 462 states have internal predecessors, (650), 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) [2023-11-29 03:17:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 650 transitions. [2023-11-29 03:17:46,722 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 650 transitions. Word has length 68 [2023-11-29 03:17:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:46,723 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 650 transitions. [2023-11-29 03:17:46,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 03:17:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 650 transitions. [2023-11-29 03:17:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 03:17:46,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:46,725 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:46,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-29 03:17:46,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:17:46,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:46,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1095561477, now seen corresponding path program 2 times [2023-11-29 03:17:46,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:17:46,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282735124] [2023-11-29 03:17:46,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:17:46,927 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 [2023-11-29 03:17:46,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:17:46,928 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:17:46,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:17:46,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:17:46,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:17:46,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 03:17:46,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:50,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:53,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:17:53,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282735124] [2023-11-29 03:17:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282735124] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:53,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:17:53,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2023-11-29 03:17:53,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267476894] [2023-11-29 03:17:53,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:53,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 03:17:53,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:17:53,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 03:17:53,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 03:17:53,580 INFO L87 Difference]: Start difference. First operand 463 states and 650 transitions. Second operand has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 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) [2023-11-29 03:18:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:08,137 INFO L93 Difference]: Finished difference Result 1608 states and 2172 transitions. [2023-11-29 03:18:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-29 03:18:08,138 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 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 68 [2023-11-29 03:18:08,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:08,147 INFO L225 Difference]: With dead ends: 1608 [2023-11-29 03:18:08,147 INFO L226 Difference]: Without dead ends: 1495 [2023-11-29 03:18:08,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1994 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=1884, Invalid=9246, Unknown=0, NotChecked=0, Total=11130 [2023-11-29 03:18:08,153 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 2091 mSDsluCounter, 6297 mSDsCounter, 0 mSdLazyCounter, 3703 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 6652 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:08,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 6652 Invalid, 3782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3703 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 03:18:08,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2023-11-29 03:18:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 728. [2023-11-29 03:18:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 1.4181568088033012) internal successors, (1031), 727 states have internal predecessors, (1031), 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) [2023-11-29 03:18:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1031 transitions. [2023-11-29 03:18:08,263 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1031 transitions. Word has length 68 [2023-11-29 03:18:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:08,263 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1031 transitions. [2023-11-29 03:18:08,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 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) [2023-11-29 03:18:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1031 transitions. [2023-11-29 03:18:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 03:18:08,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:08,265 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:18:08,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 03:18:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:18:08,466 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:08,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1513225981, now seen corresponding path program 1 times [2023-11-29 03:18:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:18:08,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907816953] [2023-11-29 03:18:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:08,468 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 [2023-11-29 03:18:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:18:08,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:18:08,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:18:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:08,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:18:08,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 03:18:08,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:08,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:18:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907816953] [2023-11-29 03:18:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907816953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:08,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:18:08,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:18:08,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982258326] [2023-11-29 03:18:08,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:08,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:18:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:18:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:18:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:18:08,607 INFO L87 Difference]: Start difference. First operand 728 states and 1031 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-29 03:18:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:08,871 INFO L93 Difference]: Finished difference Result 1166 states and 1643 transitions. [2023-11-29 03:18:08,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:18:08,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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 68 [2023-11-29 03:18:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:08,876 INFO L225 Difference]: With dead ends: 1166 [2023-11-29 03:18:08,877 INFO L226 Difference]: Without dead ends: 971 [2023-11-29 03:18:08,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:18:08,878 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 184 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:08,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 426 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:18:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-11-29 03:18:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 554. [2023-11-29 03:18:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.4086799276672695) internal successors, (779), 553 states have internal predecessors, (779), 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) [2023-11-29 03:18:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 779 transitions. [2023-11-29 03:18:08,966 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 779 transitions. Word has length 68 [2023-11-29 03:18:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:08,966 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 779 transitions. [2023-11-29 03:18:08,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-29 03:18:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 779 transitions. [2023-11-29 03:18:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:18:08,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:08,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:08,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:18:09,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:18:09,169 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:09,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash -740647244, now seen corresponding path program 1 times [2023-11-29 03:18:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:18:09,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341576192] [2023-11-29 03:18:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:09,170 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 [2023-11-29 03:18:09,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:18:09,171 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:18:09,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:18:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:09,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:18:09,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:18:09,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:18:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:18:09,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:18:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341576192] [2023-11-29 03:18:09,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341576192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:18:09,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:18:09,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 03:18:09,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959419768] [2023-11-29 03:18:09,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:18:09,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:18:09,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:18:09,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:18:09,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:18:09,465 INFO L87 Difference]: Start difference. First operand 554 states and 779 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 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) [2023-11-29 03:18:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:10,318 INFO L93 Difference]: Finished difference Result 1215 states and 1734 transitions. [2023-11-29 03:18:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:18:10,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 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 70 [2023-11-29 03:18:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:10,324 INFO L225 Difference]: With dead ends: 1215 [2023-11-29 03:18:10,324 INFO L226 Difference]: Without dead ends: 1022 [2023-11-29 03:18:10,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:18:10,325 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 311 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:10,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 143 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:18:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2023-11-29 03:18:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 866. [2023-11-29 03:18:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 1.4219653179190752) internal successors, (1230), 865 states have internal predecessors, (1230), 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) [2023-11-29 03:18:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1230 transitions. [2023-11-29 03:18:10,425 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1230 transitions. Word has length 70 [2023-11-29 03:18:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:10,425 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1230 transitions. [2023-11-29 03:18:10,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 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) [2023-11-29 03:18:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1230 transitions. [2023-11-29 03:18:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 03:18:10,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:10,428 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:10,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:18:10,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:18:10,629 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:10,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:10,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1581200213, now seen corresponding path program 1 times [2023-11-29 03:18:10,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:18:10,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73059425] [2023-11-29 03:18:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:10,630 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 [2023-11-29 03:18:10,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:18:10,631 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:18:10,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:18:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:10,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:18:10,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:14,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:18:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:18,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:18:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73059425] [2023-11-29 03:18:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73059425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:18:18,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:18:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-11-29 03:18:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613625512] [2023-11-29 03:18:18,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:18:18,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 03:18:18,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:18:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 03:18:18,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 03:18:18,418 INFO L87 Difference]: Start difference. First operand 866 states and 1230 transitions. Second operand has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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) [2023-11-29 03:19:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:17,763 INFO L93 Difference]: Finished difference Result 5057 states and 6861 transitions. [2023-11-29 03:19:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-11-29 03:19:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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 72 [2023-11-29 03:19:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:17,784 INFO L225 Difference]: With dead ends: 5057 [2023-11-29 03:19:17,784 INFO L226 Difference]: Without dead ends: 4739 [2023-11-29 03:19:17,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15331 ImplicationChecksByTransitivity, 50.8s TimeCoverageRelationStatistics Valid=6536, Invalid=43416, Unknown=0, NotChecked=0, Total=49952 [2023-11-29 03:19:17,801 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 2503 mSDsluCounter, 13953 mSDsCounter, 0 mSdLazyCounter, 8962 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 14647 SdHoareTripleChecker+Invalid, 9340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 8962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:17,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2503 Valid, 14647 Invalid, 9340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [378 Valid, 8962 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-11-29 03:19:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2023-11-29 03:19:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 2638. [2023-11-29 03:19:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 1.4372392870686386) internal successors, (3790), 2637 states have internal predecessors, (3790), 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) [2023-11-29 03:19:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3790 transitions. [2023-11-29 03:19:18,157 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3790 transitions. Word has length 72 [2023-11-29 03:19:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:18,158 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 3790 transitions. [2023-11-29 03:19:18,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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) [2023-11-29 03:19:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3790 transitions. [2023-11-29 03:19:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 03:19:18,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:18,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:19:18,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 03:19:18,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:19:18,365 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:18,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:18,366 INFO L85 PathProgramCache]: Analyzing trace with hash -45649685, now seen corresponding path program 1 times [2023-11-29 03:19:18,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:19:18,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388273191] [2023-11-29 03:19:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:18,366 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 [2023-11-29 03:19:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:19:18,368 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:19:18,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:19:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:18,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 03:19:18,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:19:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:19:22,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:19:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:19:26,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:19:26,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388273191] [2023-11-29 03:19:26,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388273191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:19:26,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:19:26,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-11-29 03:19:26,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304977082] [2023-11-29 03:19:26,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:19:26,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 03:19:26,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:19:26,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 03:19:26,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1760, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 03:19:26,075 INFO L87 Difference]: Start difference. First operand 2638 states and 3790 transitions. Second operand has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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) [2023-11-29 03:20:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:20:00,127 INFO L93 Difference]: Finished difference Result 7324 states and 10283 transitions. [2023-11-29 03:20:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-11-29 03:20:00,128 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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 72 [2023-11-29 03:20:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:20:00,146 INFO L225 Difference]: With dead ends: 7324 [2023-11-29 03:20:00,146 INFO L226 Difference]: Without dead ends: 5402 [2023-11-29 03:20:00,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4855 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=2480, Invalid=17260, Unknown=0, NotChecked=0, Total=19740 [2023-11-29 03:20:00,149 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1622 mSDsluCounter, 9083 mSDsCounter, 0 mSdLazyCounter, 5730 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 9556 SdHoareTripleChecker+Invalid, 5840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 5730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:20:00,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 9556 Invalid, 5840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [110 Valid, 5730 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 03:20:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2023-11-29 03:20:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 3146. [2023-11-29 03:20:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3145 states have (on average 1.449920508744038) internal successors, (4560), 3145 states have internal predecessors, (4560), 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) [2023-11-29 03:20:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4560 transitions. [2023-11-29 03:20:00,459 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4560 transitions. Word has length 72 [2023-11-29 03:20:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:20:00,459 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4560 transitions. [2023-11-29 03:20:00,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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) [2023-11-29 03:20:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4560 transitions. [2023-11-29 03:20:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 03:20:00,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:20:00,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:20:00,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:20:00,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:20:00,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:20:00,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash 262661866, now seen corresponding path program 1 times [2023-11-29 03:20:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:20:00,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10906493] [2023-11-29 03:20:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:00,664 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 [2023-11-29 03:20:00,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:20:00,665 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:20:00,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:20:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:00,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:20:00,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:20:00,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:20:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:20:00,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:20:00,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10906493] [2023-11-29 03:20:00,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10906493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:20:00,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:20:00,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 03:20:00,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2567973] [2023-11-29 03:20:00,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:20:00,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:20:00,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:20:00,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:20:00,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:20:00,909 INFO L87 Difference]: Start difference. First operand 3146 states and 4560 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2023-11-29 03:20:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:20:02,634 INFO L93 Difference]: Finished difference Result 11906 states and 19068 transitions. [2023-11-29 03:20:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:20:02,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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 74 [2023-11-29 03:20:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:20:02,659 INFO L225 Difference]: With dead ends: 11906 [2023-11-29 03:20:02,659 INFO L226 Difference]: Without dead ends: 5884 [2023-11-29 03:20:02,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:20:02,665 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 329 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:20:02,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 140 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:20:02,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2023-11-29 03:20:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 4980. [2023-11-29 03:20:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 4979 states have (on average 1.2379995983129142) internal successors, (6164), 4979 states have internal predecessors, (6164), 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) [2023-11-29 03:20:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 6164 transitions. [2023-11-29 03:20:03,404 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 6164 transitions. Word has length 74 [2023-11-29 03:20:03,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:20:03,405 INFO L495 AbstractCegarLoop]: Abstraction has 4980 states and 6164 transitions. [2023-11-29 03:20:03,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2023-11-29 03:20:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 6164 transitions. [2023-11-29 03:20:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 03:20:03,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:20:03,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:20:03,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 03:20:03,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:20:03,608 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:20:03,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:03,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1769569720, now seen corresponding path program 1 times [2023-11-29 03:20:03,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:20:03,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936919425] [2023-11-29 03:20:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:03,609 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 [2023-11-29 03:20:03,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:20:03,610 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:20:03,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:20:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:03,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:20:03,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:20:08,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:20:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:20:14,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:20:14,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936919425] [2023-11-29 03:20:14,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936919425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:20:14,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:20:14,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 03:20:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344734907] [2023-11-29 03:20:14,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:20:14,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 03:20:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:20:14,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 03:20:14,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2088, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 03:20:14,171 INFO L87 Difference]: Start difference. First operand 4980 states and 6164 transitions. Second operand has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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) [2023-11-29 03:21:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:21:08,753 INFO L93 Difference]: Finished difference Result 6670 states and 8148 transitions. [2023-11-29 03:21:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-11-29 03:21:08,754 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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 75 [2023-11-29 03:21:08,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:21:08,786 INFO L225 Difference]: With dead ends: 6670 [2023-11-29 03:21:08,786 INFO L226 Difference]: Without dead ends: 6423 [2023-11-29 03:21:08,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8559 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=4001, Invalid=28219, Unknown=0, NotChecked=0, Total=32220 [2023-11-29 03:21:08,790 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1957 mSDsluCounter, 7970 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 8252 SdHoareTripleChecker+Invalid, 5002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:21:08,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 8252 Invalid, 5002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [231 Valid, 4771 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-11-29 03:21:08,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2023-11-29 03:21:09,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 5618. [2023-11-29 03:21:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5617 states have (on average 1.2344667972227168) internal successors, (6934), 5617 states have internal predecessors, (6934), 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) [2023-11-29 03:21:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 6934 transitions. [2023-11-29 03:21:09,644 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 6934 transitions. Word has length 75 [2023-11-29 03:21:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:21:09,644 INFO L495 AbstractCegarLoop]: Abstraction has 5618 states and 6934 transitions. [2023-11-29 03:21:09,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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) [2023-11-29 03:21:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 6934 transitions. [2023-11-29 03:21:09,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 03:21:09,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:21:09,648 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:21:09,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 03:21:09,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:21:09,848 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:21:09,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:21:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1479936504, now seen corresponding path program 2 times [2023-11-29 03:21:09,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:21:09,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65579149] [2023-11-29 03:21:09,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:21:09,849 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 [2023-11-29 03:21:09,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:21:09,850 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:21:09,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:21:09,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:21:09,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:21:09,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:21:09,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:21:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:21:14,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:21:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:21:19,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:21:19,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65579149] [2023-11-29 03:21:19,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65579149] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:21:19,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:21:19,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 03:21:19,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301897704] [2023-11-29 03:21:19,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:21:19,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 03:21:19,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:21:19,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 03:21:19,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2078, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 03:21:19,795 INFO L87 Difference]: Start difference. First operand 5618 states and 6934 transitions. Second operand has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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) [2023-11-29 03:23:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:23:01,043 INFO L93 Difference]: Finished difference Result 9272 states and 11326 transitions. [2023-11-29 03:23:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-11-29 03:23:01,044 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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 75 [2023-11-29 03:23:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:23:01,055 INFO L225 Difference]: With dead ends: 9272 [2023-11-29 03:23:01,055 INFO L226 Difference]: Without dead ends: 8384 [2023-11-29 03:23:01,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21848 ImplicationChecksByTransitivity, 94.8s TimeCoverageRelationStatistics Valid=7576, Invalid=58216, Unknown=0, NotChecked=0, Total=65792 [2023-11-29 03:23:01,062 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2713 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 6248 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2713 SdHoareTripleChecker+Valid, 10890 SdHoareTripleChecker+Invalid, 6551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 6248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:23:01,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2713 Valid, 10890 Invalid, 6551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [303 Valid, 6248 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-11-29 03:23:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2023-11-29 03:23:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 6830. [2023-11-29 03:23:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6830 states, 6829 states have (on average 1.235027090349978) internal successors, (8434), 6829 states have internal predecessors, (8434), 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) [2023-11-29 03:23:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 8434 transitions. [2023-11-29 03:23:02,028 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 8434 transitions. Word has length 75 [2023-11-29 03:23:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:23:02,028 INFO L495 AbstractCegarLoop]: Abstraction has 6830 states and 8434 transitions. [2023-11-29 03:23:02,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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) [2023-11-29 03:23:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 8434 transitions. [2023-11-29 03:23:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 03:23:02,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:23:02,030 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:23:02,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 03:23:02,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:23:02,231 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:23:02,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash -912193912, now seen corresponding path program 3 times [2023-11-29 03:23:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:23:02,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121764848] [2023-11-29 03:23:02,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:23:02,232 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 [2023-11-29 03:23:02,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:23:02,233 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:23:02,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 03:23:02,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 03:23:02,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:23:02,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:23:02,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:23:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:06,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:23:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:10,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:23:10,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121764848] [2023-11-29 03:23:10,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121764848] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:23:10,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:23:10,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-11-29 03:23:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726876197] [2023-11-29 03:23:10,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:23:10,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 03:23:10,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:23:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 03:23:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2012, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 03:23:10,880 INFO L87 Difference]: Start difference. First operand 6830 states and 8434 transitions. Second operand has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 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) [2023-11-29 03:24:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:24:54,105 INFO L93 Difference]: Finished difference Result 12059 states and 14718 transitions. [2023-11-29 03:24:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2023-11-29 03:24:54,106 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 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 75 [2023-11-29 03:24:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:24:54,120 INFO L225 Difference]: With dead ends: 12059 [2023-11-29 03:24:54,120 INFO L226 Difference]: Without dead ends: 9957 [2023-11-29 03:24:54,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13961 ImplicationChecksByTransitivity, 95.6s TimeCoverageRelationStatistics Valid=6750, Invalid=38832, Unknown=0, NotChecked=0, Total=45582 [2023-11-29 03:24:54,126 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2677 mSDsluCounter, 9706 mSDsCounter, 0 mSdLazyCounter, 5587 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 10137 SdHoareTripleChecker+Invalid, 5946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 5587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:24:54,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2677 Valid, 10137 Invalid, 5946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [359 Valid, 5587 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-11-29 03:24:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2023-11-29 03:24:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 7507. [2023-11-29 03:24:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7507 states, 7506 states have (on average 1.234345856648015) internal successors, (9265), 7506 states have internal predecessors, (9265), 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) [2023-11-29 03:24:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 9265 transitions. [2023-11-29 03:24:55,433 INFO L78 Accepts]: Start accepts. Automaton has 7507 states and 9265 transitions. Word has length 75 [2023-11-29 03:24:55,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:24:55,434 INFO L495 AbstractCegarLoop]: Abstraction has 7507 states and 9265 transitions. [2023-11-29 03:24:55,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 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) [2023-11-29 03:24:55,434 INFO L276 IsEmpty]: Start isEmpty. Operand 7507 states and 9265 transitions. [2023-11-29 03:24:55,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 03:24:55,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:24:55,435 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:24:55,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-29 03:24:55,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:24:55,636 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:24:55,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:24:55,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1380443849, now seen corresponding path program 1 times [2023-11-29 03:24:55,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:24:55,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693443933] [2023-11-29 03:24:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:24:55,637 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 [2023-11-29 03:24:55,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:24:55,637 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:24:55,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 03:24:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:55,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:24:55,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:24:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:24:55,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:24:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 61 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:24:55,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:24:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693443933] [2023-11-29 03:24:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693443933] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:24:55,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:24:55,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 03:24:55,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820829445] [2023-11-29 03:24:55,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:24:55,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:24:55,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:24:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:24:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:24:55,917 INFO L87 Difference]: Start difference. First operand 7507 states and 9265 transitions. Second operand has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 13 states have internal predecessors, (113), 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) [2023-11-29 03:24:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:24:58,827 INFO L93 Difference]: Finished difference Result 16517 states and 20663 transitions. [2023-11-29 03:24:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 03:24:58,828 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 13 states have internal predecessors, (113), 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 76 [2023-11-29 03:24:58,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:24:58,840 INFO L225 Difference]: With dead ends: 16517 [2023-11-29 03:24:58,840 INFO L226 Difference]: Without dead ends: 8596 [2023-11-29 03:24:58,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 03:24:58,845 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 719 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:24:58,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 392 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:24:58,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2023-11-29 03:25:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 6791. [2023-11-29 03:25:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6791 states, 6790 states have (on average 1.1832106038291605) internal successors, (8034), 6790 states have internal predecessors, (8034), 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) [2023-11-29 03:25:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6791 states to 6791 states and 8034 transitions. [2023-11-29 03:25:00,145 INFO L78 Accepts]: Start accepts. Automaton has 6791 states and 8034 transitions. Word has length 76 [2023-11-29 03:25:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:25:00,146 INFO L495 AbstractCegarLoop]: Abstraction has 6791 states and 8034 transitions. [2023-11-29 03:25:00,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 13 states have internal predecessors, (113), 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) [2023-11-29 03:25:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6791 states and 8034 transitions. [2023-11-29 03:25:00,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 03:25:00,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:25:00,147 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:00,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 03:25:00,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:25:00,348 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:25:00,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1370231246, now seen corresponding path program 1 times [2023-11-29 03:25:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:25:00,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331348608] [2023-11-29 03:25:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:00,349 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 [2023-11-29 03:25:00,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:25:00,350 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:25:00,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 03:25:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:00,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:25:00,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:25:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:04,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:25:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:10,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:25:10,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331348608] [2023-11-29 03:25:10,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331348608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:25:10,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:25:10,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 03:25:10,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506903868] [2023-11-29 03:25:10,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:25:10,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 03:25:10,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:25:10,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 03:25:10,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2096, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 03:25:10,223 INFO L87 Difference]: Start difference. First operand 6791 states and 8034 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-11-29 03:26:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:26:58,489 INFO L93 Difference]: Finished difference Result 10734 states and 12549 transitions. [2023-11-29 03:26:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-11-29 03:26:58,490 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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 78 [2023-11-29 03:26:58,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:26:58,500 INFO L225 Difference]: With dead ends: 10734 [2023-11-29 03:26:58,500 INFO L226 Difference]: Without dead ends: 10546 [2023-11-29 03:26:58,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18547 ImplicationChecksByTransitivity, 99.5s TimeCoverageRelationStatistics Valid=5703, Invalid=51657, Unknown=0, NotChecked=0, Total=57360 [2023-11-29 03:26:58,505 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2302 mSDsluCounter, 11760 mSDsCounter, 0 mSdLazyCounter, 7186 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 12215 SdHoareTripleChecker+Invalid, 7553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 7186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:26:58,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 12215 Invalid, 7553 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 7186 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-11-29 03:26:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2023-11-29 03:27:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 7698. [2023-11-29 03:27:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7698 states, 7697 states have (on average 1.1755229310120827) internal successors, (9048), 7697 states have internal predecessors, (9048), 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) [2023-11-29 03:27:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7698 states to 7698 states and 9048 transitions. [2023-11-29 03:27:00,107 INFO L78 Accepts]: Start accepts. Automaton has 7698 states and 9048 transitions. Word has length 78 [2023-11-29 03:27:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:27:00,108 INFO L495 AbstractCegarLoop]: Abstraction has 7698 states and 9048 transitions. [2023-11-29 03:27:00,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-11-29 03:27:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 7698 states and 9048 transitions. [2023-11-29 03:27:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 03:27:00,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:27:00,109 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:27:00,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 03:27:00,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:27:00,310 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:27:00,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:27:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash -986217998, now seen corresponding path program 2 times [2023-11-29 03:27:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:27:00,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781586892] [2023-11-29 03:27:00,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:27:00,310 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 [2023-11-29 03:27:00,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:27:00,311 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:27:00,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 03:27:00,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:27:00,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:27:00,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:27:00,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:27:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:27:04,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:27:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:27:09,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:27:09,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781586892] [2023-11-29 03:27:09,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781586892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:27:09,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:27:09,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 03:27:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848466533] [2023-11-29 03:27:09,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:27:09,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 03:27:09,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:27:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 03:27:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2100, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 03:27:09,391 INFO L87 Difference]: Start difference. First operand 7698 states and 9048 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-11-29 03:29:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:29:06,116 INFO L93 Difference]: Finished difference Result 15170 states and 17585 transitions. [2023-11-29 03:29:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-11-29 03:29:06,117 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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 78 [2023-11-29 03:29:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:29:06,126 INFO L225 Difference]: With dead ends: 15170 [2023-11-29 03:29:06,126 INFO L226 Difference]: Without dead ends: 13034 [2023-11-29 03:29:06,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21862 ImplicationChecksByTransitivity, 100.6s TimeCoverageRelationStatistics Valid=5804, Invalid=59476, Unknown=0, NotChecked=0, Total=65280 [2023-11-29 03:29:06,131 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 2288 mSDsluCounter, 17643 mSDsCounter, 0 mSdLazyCounter, 10701 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 18301 SdHoareTripleChecker+Invalid, 11058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 10701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:29:06,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 18301 Invalid, 11058 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [357 Valid, 10701 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-11-29 03:29:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13034 states. [2023-11-29 03:29:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13034 to 8584. [2023-11-29 03:29:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8584 states, 8583 states have (on average 1.1723173715484096) internal successors, (10062), 8583 states have internal predecessors, (10062), 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) [2023-11-29 03:29:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 10062 transitions. [2023-11-29 03:29:07,823 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 10062 transitions. Word has length 78 [2023-11-29 03:29:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:29:07,823 INFO L495 AbstractCegarLoop]: Abstraction has 8584 states and 10062 transitions. [2023-11-29 03:29:07,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-11-29 03:29:07,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 10062 transitions. [2023-11-29 03:29:07,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 03:29:07,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:07,824 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:07,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-29 03:29:08,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:29:08,025 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:08,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:08,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1200432082, now seen corresponding path program 3 times [2023-11-29 03:29:08,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:29:08,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787242080] [2023-11-29 03:29:08,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:29:08,026 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 [2023-11-29 03:29:08,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:29:08,027 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:29:08,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e9cc24-34bd-4e3e-9557-cef74e8767d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 03:29:08,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 03:29:08,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:29:08,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:29:08,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:29:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:29:12,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:29:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:29:17,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:29:17,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787242080] [2023-11-29 03:29:17,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787242080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:29:17,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:29:17,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 03:29:17,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012627819] [2023-11-29 03:29:17,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:29:17,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 03:29:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:29:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 03:29:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2095, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 03:29:17,488 INFO L87 Difference]: Start difference. First operand 8584 states and 10062 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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)