./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:54:45,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:54:45,848 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:54:45,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:54:45,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:54:45,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:54:45,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:54:45,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:54:45,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:54:45,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:54:45,904 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:54:45,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:54:45,905 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:54:45,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:54:45,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:54:45,908 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:54:45,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:54:45,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:54:45,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:54:45,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:54:45,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:54:45,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:54:45,911 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:54:45,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:54:45,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:54:45,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:54:45,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:54:45,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:54:45,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:45,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:54:45,918 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:54:45,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:54:45,919 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:54:45,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:54:45,919 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:54:45,920 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:54:45,920 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:54:45,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:54:45,921 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:54:45,921 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_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2023-11-06 21:54:46,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:54:46,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:54:46,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:54:46,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:54:46,242 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:54:46,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2023-11-06 21:54:49,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:54:49,797 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:54:49,798 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2023-11-06 21:54:49,808 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/data/c425a0455/c95adb9783a34b58a7ab7f80324a06fa/FLAG4eba17216 [2023-11-06 21:54:49,833 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/data/c425a0455/c95adb9783a34b58a7ab7f80324a06fa [2023-11-06 21:54:49,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:54:49,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:54:49,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:49,851 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:54:49,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:54:49,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:49" (1/1) ... [2023-11-06 21:54:49,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554bc7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:49, skipping insertion in model container [2023-11-06 21:54:49,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:49" (1/1) ... [2023-11-06 21:54:49,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:50,079 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_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2023-11-06 21:54:50,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:50,147 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:54:50,161 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_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2023-11-06 21:54:50,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:50,235 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:54:50,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50 WrapperNode [2023-11-06 21:54:50,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:50,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:50,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:54:50,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:54:50,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,284 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 146 [2023-11-06 21:54:50,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:50,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:54:50,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:54:50,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:54:50,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:54:50,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:54:50,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:54:50,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:54:50,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (1/1) ... [2023-11-06 21:54:50,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:50,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:50,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:54:50,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:54:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:54:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:54:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-06 21:54:50,433 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-06 21:54:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:54:50,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:54:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 21:54:50,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 21:54:50,518 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:54:50,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:54:50,951 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:54:50,960 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:54:50,961 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:54:50,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:50 BoogieIcfgContainer [2023-11-06 21:54:50,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:54:50,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:54:50,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:54:50,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:54:50,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:54:49" (1/3) ... [2023-11-06 21:54:50,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ece0751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:50, skipping insertion in model container [2023-11-06 21:54:50,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:50" (2/3) ... [2023-11-06 21:54:50,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ece0751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:50, skipping insertion in model container [2023-11-06 21:54:50,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:50" (3/3) ... [2023-11-06 21:54:50,976 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2023-11-06 21:54:51,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:54:51,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:54:51,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:51,075 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5cb15a28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:51,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:54:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 60 states have (on average 1.6) internal successors, (96), 62 states have internal predecessors, (96), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 21:54:51,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 21:54:51,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:51,096 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:51,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:51,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash -180639892, now seen corresponding path program 1 times [2023-11-06 21:54:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:51,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183994152] [2023-11-06 21:54:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:51,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 21:54:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 21:54:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:51,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183994152] [2023-11-06 21:54:51,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183994152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:51,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:51,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:51,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101796908] [2023-11-06 21:54:51,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:51,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:51,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:51,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:51,538 INFO L87 Difference]: Start difference. First operand has 69 states, 60 states have (on average 1.6) internal successors, (96), 62 states have internal predecessors, (96), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:51,595 INFO L93 Difference]: Finished difference Result 161 states and 255 transitions. [2023-11-06 21:54:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:51,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-11-06 21:54:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:51,608 INFO L225 Difference]: With dead ends: 161 [2023-11-06 21:54:51,608 INFO L226 Difference]: Without dead ends: 63 [2023-11-06 21:54:51,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:51,617 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 33 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:51,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 191 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:51,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-06 21:54:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-06 21:54:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 56 states have internal predecessors, (82), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 21:54:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 91 transitions. [2023-11-06 21:54:51,709 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 91 transitions. Word has length 42 [2023-11-06 21:54:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:51,714 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 91 transitions. [2023-11-06 21:54:51,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 91 transitions. [2023-11-06 21:54:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-06 21:54:51,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:51,723 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:51,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:51,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:51,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:51,726 INFO L85 PathProgramCache]: Analyzing trace with hash -851029466, now seen corresponding path program 1 times [2023-11-06 21:54:51,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:51,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56615480] [2023-11-06 21:54:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:51,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 21:54:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 21:54:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:51,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:51,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56615480] [2023-11-06 21:54:51,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56615480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:51,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:51,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003778713] [2023-11-06 21:54:51,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:51,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:51,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:51,994 INFO L87 Difference]: Start difference. First operand 63 states and 91 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:52,036 INFO L93 Difference]: Finished difference Result 96 states and 138 transitions. [2023-11-06 21:54:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:52,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2023-11-06 21:54:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:52,039 INFO L225 Difference]: With dead ends: 96 [2023-11-06 21:54:52,040 INFO L226 Difference]: Without dead ends: 63 [2023-11-06 21:54:52,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:52,042 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 68 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:52,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 265 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-06 21:54:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-06 21:54:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 56 states have internal predecessors, (81), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 21:54:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 90 transitions. [2023-11-06 21:54:52,054 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 90 transitions. Word has length 44 [2023-11-06 21:54:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:52,055 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 90 transitions. [2023-11-06 21:54:52,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 90 transitions. [2023-11-06 21:54:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-06 21:54:52,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:52,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:52,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:52,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:52,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:52,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1437835480, now seen corresponding path program 1 times [2023-11-06 21:54:52,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:52,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606984208] [2023-11-06 21:54:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:52,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:52,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 21:54:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 21:54:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:54:52,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:52,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606984208] [2023-11-06 21:54:52,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606984208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:52,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507455441] [2023-11-06 21:54:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:52,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:52,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:52,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:52,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:54:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:52,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 21:54:52,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:54:52,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 21:54:52,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507455441] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:52,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:52,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2023-11-06 21:54:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725744668] [2023-11-06 21:54:52,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:52,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:54:52,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:54:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:52,919 INFO L87 Difference]: Start difference. First operand 63 states and 90 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-06 21:54:53,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:53,658 INFO L93 Difference]: Finished difference Result 243 states and 388 transitions. [2023-11-06 21:54:53,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 21:54:53,659 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 44 [2023-11-06 21:54:53,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:53,665 INFO L225 Difference]: With dead ends: 243 [2023-11-06 21:54:53,666 INFO L226 Difference]: Without dead ends: 184 [2023-11-06 21:54:53,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2023-11-06 21:54:53,670 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 282 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:53,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 591 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:54:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-06 21:54:53,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 121. [2023-11-06 21:54:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 108 states have internal predecessors, (154), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-06 21:54:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 179 transitions. [2023-11-06 21:54:53,710 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 179 transitions. Word has length 44 [2023-11-06 21:54:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:53,711 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 179 transitions. [2023-11-06 21:54:53,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-06 21:54:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 179 transitions. [2023-11-06 21:54:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 21:54:53,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:53,716 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:53,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:53,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:53,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:53,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1197267030, now seen corresponding path program 1 times [2023-11-06 21:54:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443457380] [2023-11-06 21:54:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 21:54:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:54:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:54:54,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:54,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443457380] [2023-11-06 21:54:54,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443457380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892884011] [2023-11-06 21:54:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:54,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:54,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:54,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:54:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:54:54,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:54:54,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:54,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892884011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:54,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:54:54,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-06 21:54:54,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287606201] [2023-11-06 21:54:54,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:54,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:54,178 INFO L87 Difference]: Start difference. First operand 121 states and 179 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 21:54:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:54,268 INFO L93 Difference]: Finished difference Result 247 states and 367 transitions. [2023-11-06 21:54:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2023-11-06 21:54:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:54,274 INFO L225 Difference]: With dead ends: 247 [2023-11-06 21:54:54,274 INFO L226 Difference]: Without dead ends: 137 [2023-11-06 21:54:54,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:54,277 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 19 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:54,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 223 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-06 21:54:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-06 21:54:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 122 states have (on average 1.4180327868852458) internal successors, (173), 124 states have internal predecessors, (173), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-06 21:54:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 203 transitions. [2023-11-06 21:54:54,314 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 203 transitions. Word has length 49 [2023-11-06 21:54:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:54,315 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 203 transitions. [2023-11-06 21:54:54,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 21:54:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 203 transitions. [2023-11-06 21:54:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 21:54:54,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:54,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:54,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:54,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:54,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:54,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:54,525 INFO L85 PathProgramCache]: Analyzing trace with hash 928392544, now seen corresponding path program 1 times [2023-11-06 21:54:54,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:54,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135605575] [2023-11-06 21:54:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:54,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 21:54:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-06 21:54:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:54:54,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:54,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135605575] [2023-11-06 21:54:54,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135605575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:54,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218058493] [2023-11-06 21:54:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:54,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:54,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:54,663 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:54,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:54:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:54:54,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:54:54,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:54:54,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218058493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:54,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:54,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 21:54:54,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916437539] [2023-11-06 21:54:54,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:54,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:54:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:54,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:54:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:54:54,949 INFO L87 Difference]: Start difference. First operand 137 states and 203 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 21:54:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:55,214 INFO L93 Difference]: Finished difference Result 359 states and 561 transitions. [2023-11-06 21:54:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:54:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-11-06 21:54:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:55,218 INFO L225 Difference]: With dead ends: 359 [2023-11-06 21:54:55,218 INFO L226 Difference]: Without dead ends: 239 [2023-11-06 21:54:55,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:54:55,220 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 188 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:55,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 446 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-06 21:54:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 164. [2023-11-06 21:54:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 149 states have (on average 1.4429530201342282) internal successors, (215), 151 states have internal predecessors, (215), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-06 21:54:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 245 transitions. [2023-11-06 21:54:55,278 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 245 transitions. Word has length 52 [2023-11-06 21:54:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:55,279 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 245 transitions. [2023-11-06 21:54:55,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 21:54:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 245 transitions. [2023-11-06 21:54:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 21:54:55,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:55,286 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:55,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:55,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:55,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:55,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:55,493 INFO L85 PathProgramCache]: Analyzing trace with hash -974040176, now seen corresponding path program 1 times [2023-11-06 21:54:55,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:55,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931854754] [2023-11-06 21:54:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:55,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:54:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-06 21:54:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 21:54:55,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931854754] [2023-11-06 21:54:55,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931854754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879720426] [2023-11-06 21:54:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:55,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:55,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:55,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:55,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:54:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:54:55,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 21:54:55,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:55,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879720426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:55,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:54:55,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2023-11-06 21:54:55,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098020868] [2023-11-06 21:54:55,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:55,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:55,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:55,674 INFO L87 Difference]: Start difference. First operand 164 states and 245 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 21:54:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:55,737 INFO L93 Difference]: Finished difference Result 308 states and 480 transitions. [2023-11-06 21:54:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:55,738 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2023-11-06 21:54:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:55,740 INFO L225 Difference]: With dead ends: 308 [2023-11-06 21:54:55,741 INFO L226 Difference]: Without dead ends: 171 [2023-11-06 21:54:55,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:55,743 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:55,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 161 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-06 21:54:55,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 164. [2023-11-06 21:54:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 149 states have (on average 1.4228187919463087) internal successors, (212), 151 states have internal predecessors, (212), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-06 21:54:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2023-11-06 21:54:55,768 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 54 [2023-11-06 21:54:55,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:55,769 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2023-11-06 21:54:55,769 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 21:54:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2023-11-06 21:54:55,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 21:54:55,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:55,771 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:55,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:55,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 21:54:55,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:55,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash -866926084, now seen corresponding path program 1 times [2023-11-06 21:54:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:55,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929292483] [2023-11-06 21:54:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:55,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 21:54:56,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929292483] [2023-11-06 21:54:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929292483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:56,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460968168] [2023-11-06 21:54:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:56,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:56,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:56,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:54:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:54:56,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:54:56,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460968168] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:56,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:54:56,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 12 [2023-11-06 21:54:56,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48934586] [2023-11-06 21:54:56,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:56,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:54:56,432 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:56,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:56,517 INFO L93 Difference]: Finished difference Result 181 states and 260 transitions. [2023-11-06 21:54:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:56,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2023-11-06 21:54:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:56,521 INFO L225 Difference]: With dead ends: 181 [2023-11-06 21:54:56,521 INFO L226 Difference]: Without dead ends: 175 [2023-11-06 21:54:56,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:54:56,523 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 10 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:56,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 333 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-06 21:54:56,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2023-11-06 21:54:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 158 states have (on average 1.4050632911392404) internal successors, (222), 160 states have internal predecessors, (222), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-06 21:54:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 252 transitions. [2023-11-06 21:54:56,560 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 252 transitions. Word has length 55 [2023-11-06 21:54:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:56,561 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 252 transitions. [2023-11-06 21:54:56,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 252 transitions. [2023-11-06 21:54:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 21:54:56,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:56,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:56,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:56,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:56,771 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:56,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash -809667782, now seen corresponding path program 1 times [2023-11-06 21:54:56,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:56,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860224209] [2023-11-06 21:54:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:56,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:56,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860224209] [2023-11-06 21:54:56,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860224209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:56,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:56,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:54:56,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129843790] [2023-11-06 21:54:56,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:56,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:56,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:56,921 INFO L87 Difference]: Start difference. First operand 173 states and 252 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:56,976 INFO L93 Difference]: Finished difference Result 179 states and 257 transitions. [2023-11-06 21:54:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:56,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2023-11-06 21:54:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:56,982 INFO L225 Difference]: With dead ends: 179 [2023-11-06 21:54:56,982 INFO L226 Difference]: Without dead ends: 168 [2023-11-06 21:54:56,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:54:56,984 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 2 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:56,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 433 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-06 21:54:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-11-06 21:54:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 153 states have (on average 1.392156862745098) internal successors, (213), 155 states have internal predecessors, (213), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-06 21:54:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 243 transitions. [2023-11-06 21:54:57,011 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 243 transitions. Word has length 55 [2023-11-06 21:54:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:57,012 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 243 transitions. [2023-11-06 21:54:57,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 243 transitions. [2023-11-06 21:54:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 21:54:57,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:57,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:57,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:54:57,015 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:57,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash -735780360, now seen corresponding path program 1 times [2023-11-06 21:54:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:57,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50785424] [2023-11-06 21:54:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:57,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:57,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 21:54:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50785424] [2023-11-06 21:54:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50785424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793416518] [2023-11-06 21:54:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:57,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:57,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:57,184 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:57,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:54:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:57,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 21:54:57,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 21:54:57,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 21:54:57,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793416518] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:57,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:57,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 8] total 18 [2023-11-06 21:54:57,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164149735] [2023-11-06 21:54:57,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:57,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 21:54:57,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 21:54:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:54:57,570 INFO L87 Difference]: Start difference. First operand 168 states and 243 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 21:54:58,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:58,156 INFO L93 Difference]: Finished difference Result 288 states and 421 transitions. [2023-11-06 21:54:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 21:54:58,159 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 60 [2023-11-06 21:54:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:58,161 INFO L225 Difference]: With dead ends: 288 [2023-11-06 21:54:58,161 INFO L226 Difference]: Without dead ends: 115 [2023-11-06 21:54:58,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2023-11-06 21:54:58,165 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 50 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:58,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 805 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:54:58,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-06 21:54:58,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2023-11-06 21:54:58,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 90 states have internal predecessors, (119), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 21:54:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 134 transitions. [2023-11-06 21:54:58,200 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 134 transitions. Word has length 60 [2023-11-06 21:54:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:58,201 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 134 transitions. [2023-11-06 21:54:58,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 21:54:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 134 transitions. [2023-11-06 21:54:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 21:54:58,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:58,203 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:58,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:58,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:58,409 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:58,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 768963947, now seen corresponding path program 1 times [2023-11-06 21:54:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:58,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723116873] [2023-11-06 21:54:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:58,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:58,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:58,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 21:54:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 21:54:58,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:58,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723116873] [2023-11-06 21:54:58,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723116873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:58,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:58,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:58,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83822029] [2023-11-06 21:54:58,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:58,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:58,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:58,656 INFO L87 Difference]: Start difference. First operand 99 states and 134 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:58,732 INFO L93 Difference]: Finished difference Result 136 states and 181 transitions. [2023-11-06 21:54:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:54:58,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2023-11-06 21:54:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:58,734 INFO L225 Difference]: With dead ends: 136 [2023-11-06 21:54:58,734 INFO L226 Difference]: Without dead ends: 96 [2023-11-06 21:54:58,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:54:58,735 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 5 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:58,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 476 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-06 21:54:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-06 21:54:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 86 states have (on average 1.313953488372093) internal successors, (113), 87 states have internal predecessors, (113), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-06 21:54:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2023-11-06 21:54:58,749 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 64 [2023-11-06 21:54:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:58,750 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2023-11-06 21:54:58,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2023-11-06 21:54:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 21:54:58,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:58,751 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:58,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:54:58,752 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:58,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:58,753 INFO L85 PathProgramCache]: Analyzing trace with hash -955640422, now seen corresponding path program 2 times [2023-11-06 21:54:58,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:58,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780909573] [2023-11-06 21:54:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:58,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 21:54:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 21:54:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780909573] [2023-11-06 21:54:59,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780909573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:59,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912779070] [2023-11-06 21:54:59,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:54:59,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:59,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:59,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:59,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:54:59,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 21:54:59,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:54:59,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:54:59,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 21:54:59,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:59,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912779070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:59,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:54:59,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2023-11-06 21:54:59,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496832248] [2023-11-06 21:54:59,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:59,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:54:59,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:59,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:54:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:54:59,314 INFO L87 Difference]: Start difference. First operand 96 states and 125 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:59,473 INFO L93 Difference]: Finished difference Result 140 states and 180 transitions. [2023-11-06 21:54:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:54:59,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2023-11-06 21:54:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:59,475 INFO L225 Difference]: With dead ends: 140 [2023-11-06 21:54:59,475 INFO L226 Difference]: Without dead ends: 99 [2023-11-06 21:54:59,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-06 21:54:59,476 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 76 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:59,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 611 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-06 21:54:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-06 21:54:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 90 states have internal predecessors, (115), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 21:54:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2023-11-06 21:54:59,492 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 68 [2023-11-06 21:54:59,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:59,492 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2023-11-06 21:54:59,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2023-11-06 21:54:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 21:54:59,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:59,494 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:59,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:59,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:59,699 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:59,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:59,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1050568965, now seen corresponding path program 1 times [2023-11-06 21:54:59,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:59,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179771779] [2023-11-06 21:54:59,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:59,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 21:54:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 21:54:59,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:59,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179771779] [2023-11-06 21:54:59,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179771779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:59,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:59,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:59,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600583927] [2023-11-06 21:54:59,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:59,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:59,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:59,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:59,779 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:59,829 INFO L93 Difference]: Finished difference Result 187 states and 241 transitions. [2023-11-06 21:54:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:59,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 72 [2023-11-06 21:54:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:59,831 INFO L225 Difference]: With dead ends: 187 [2023-11-06 21:54:59,832 INFO L226 Difference]: Without dead ends: 99 [2023-11-06 21:54:59,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:59,833 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 6 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:59,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 147 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-06 21:54:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-06 21:54:59,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 90 states have internal predecessors, (114), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 21:54:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2023-11-06 21:54:59,852 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 72 [2023-11-06 21:54:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:59,852 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2023-11-06 21:54:59,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2023-11-06 21:54:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 21:54:59,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:59,854 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:59,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:54:59,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:59,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:59,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1858194937, now seen corresponding path program 1 times [2023-11-06 21:54:59,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:59,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684295542] [2023-11-06 21:54:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:59,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:54:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:54:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:55:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 21:55:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 21:55:00,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684295542] [2023-11-06 21:55:00,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684295542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485083380] [2023-11-06 21:55:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:00,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:00,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:00,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:00,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:55:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:00,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 21:55:00,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 21:55:00,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 21:55:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485083380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:00,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:55:00,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 14] total 23 [2023-11-06 21:55:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965016628] [2023-11-06 21:55:00,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:00,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 21:55:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:00,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 21:55:00,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-11-06 21:55:00,759 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 20 states have internal predecessors, (90), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-06 21:55:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:01,345 INFO L93 Difference]: Finished difference Result 238 states and 310 transitions. [2023-11-06 21:55:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:55:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 20 states have internal predecessors, (90), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 72 [2023-11-06 21:55:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:01,367 INFO L225 Difference]: With dead ends: 238 [2023-11-06 21:55:01,367 INFO L226 Difference]: Without dead ends: 148 [2023-11-06 21:55:01,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2023-11-06 21:55:01,369 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 135 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:01,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 962 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:55:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-06 21:55:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 107. [2023-11-06 21:55:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 96 states have internal predecessors, (121), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 21:55:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2023-11-06 21:55:01,387 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 72 [2023-11-06 21:55:01,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:01,387 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2023-11-06 21:55:01,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 20 states have internal predecessors, (90), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-06 21:55:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2023-11-06 21:55:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-06 21:55:01,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:01,389 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:01,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:01,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:01,595 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:01,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash -17964141, now seen corresponding path program 1 times [2023-11-06 21:55:01,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:01,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449923020] [2023-11-06 21:55:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:01,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:55:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:55:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 21:55:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 21:55:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 21:55:01,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449923020] [2023-11-06 21:55:01,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449923020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173048396] [2023-11-06 21:55:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:01,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:01,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:01,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:55:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:01,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 21:55:01,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 21:55:02,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-06 21:55:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173048396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:02,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:55:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 11] total 20 [2023-11-06 21:55:02,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91727409] [2023-11-06 21:55:02,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:02,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 21:55:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 21:55:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-06 21:55:02,411 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand has 20 states, 20 states have (on average 4.25) internal successors, (85), 17 states have internal predecessors, (85), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-06 21:55:03,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:03,072 INFO L93 Difference]: Finished difference Result 192 states and 246 transitions. [2023-11-06 21:55:03,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 21:55:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 17 states have internal predecessors, (85), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2023-11-06 21:55:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:03,073 INFO L225 Difference]: With dead ends: 192 [2023-11-06 21:55:03,074 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:55:03,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 21:55:03,076 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 139 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:03,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 252 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:55:03,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:55:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:55:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:55:03,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2023-11-06 21:55:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:03,077 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:55:03,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 17 states have internal predecessors, (85), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-06 21:55:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:55:03,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:55:03,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:55:03,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:03,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:03,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 21:55:08,659 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-11-06 21:55:08,660 INFO L899 garLoopResultBuilder]: For program point L77-2(line 77) no Hoare annotation was computed. [2023-11-06 21:55:08,660 INFO L899 garLoopResultBuilder]: For program point L77-4(line 77) no Hoare annotation was computed. [2023-11-06 21:55:08,660 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (and (<= |base2flt_#in~e| base2flt_~e) (< 0 (mod |base2flt_#in~m| 4294967296)) (not (= |base2flt_#in~m| 1))) [2023-11-06 21:55:08,661 INFO L895 garLoopResultBuilder]: At program point $Ultimate##27(line 76) the Hoare annotation is: (let ((.cse0 (* (div base2flt_~m 4294967296) 4294967296))) (and (or (and (<= base2flt_~m 33554430) (<= 0 base2flt_~m) (<= (+ 16777216 .cse0) base2flt_~m)) (and (<= |base2flt_#in~e| base2flt_~e) (not (= |base2flt_#in~m| 1)))) (< 0 (mod |base2flt_#in~m| 4294967296)) (<= base2flt_~m (+ 33554431 .cse0)))) [2023-11-06 21:55:08,662 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2023-11-06 21:55:08,662 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2023-11-06 21:55:08,662 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse1 (<= |base2flt_#in~e| base2flt_~e)) (.cse2 (or (= base2flt_~e |base2flt_#in~e|) (= base2flt_~e 0))) (.cse0 (or (not (= |base2flt_#in~m| 0)) (< (mod |base2flt_#res| 4294967296) 1)))) (or (and (<= (+ |base2flt_#in~e| 1) 0) .cse0) (and (= base2flt_~m |base2flt_#in~m|) .cse1 .cse2 (= base2flt_~__retres4~0 0)) (< 0 (mod |base2flt_#in~m| 4294967296)) (and .cse1 .cse2 (not (= |base2flt_#in~e| 0)) .cse0))) [2023-11-06 21:55:08,663 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 82) the Hoare annotation is: true [2023-11-06 21:55:08,663 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2023-11-06 21:55:08,664 INFO L899 garLoopResultBuilder]: For program point base2fltFINAL(lines 24 82) no Hoare annotation was computed. [2023-11-06 21:55:08,664 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2023-11-06 21:55:08,664 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2023-11-06 21:55:08,664 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2023-11-06 21:55:08,664 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (and (let ((.cse0 (<= base2flt_~m (+ 16777215 (* (div base2flt_~m 4294967296) 4294967296))))) (or (and .cse0 (<= base2flt_~m 33554430) (<= 0 base2flt_~m)) (and (= base2flt_~m |base2flt_#in~m|) .cse0 (<= |base2flt_#in~e| base2flt_~e) (or (= base2flt_~e |base2flt_#in~e|) (= base2flt_~e 0))))) (< 0 (mod |base2flt_#in~m| 4294967296))) [2023-11-06 21:55:08,664 INFO L899 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2023-11-06 21:55:08,665 INFO L899 garLoopResultBuilder]: For program point L76-3(line 76) no Hoare annotation was computed. [2023-11-06 21:55:08,665 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2023-11-06 21:55:08,665 INFO L899 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2023-11-06 21:55:08,665 INFO L899 garLoopResultBuilder]: For program point L176-2(line 176) no Hoare annotation was computed. [2023-11-06 21:55:08,665 INFO L899 garLoopResultBuilder]: For program point L176-4(line 176) no Hoare annotation was computed. [2023-11-06 21:55:08,665 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 220 276) the Hoare annotation is: true [2023-11-06 21:55:08,665 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 21:55:08,666 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2023-11-06 21:55:08,666 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 252) no Hoare annotation was computed. [2023-11-06 21:55:08,666 INFO L899 garLoopResultBuilder]: For program point L243-2(lines 243 252) no Hoare annotation was computed. [2023-11-06 21:55:08,666 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 264) no Hoare annotation was computed. [2023-11-06 21:55:08,666 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2023-11-06 21:55:08,667 INFO L899 garLoopResultBuilder]: For program point L260-2(lines 260 264) no Hoare annotation was computed. [2023-11-06 21:55:08,667 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2023-11-06 21:55:08,667 INFO L895 garLoopResultBuilder]: At program point mulflt_returnLabel#1(lines 147 219) the Hoare annotation is: (or (< |ULTIMATE.start_main_~sb~0#1| 0) (and (<= (mod |ULTIMATE.start_mulflt_#res#1| 4294967296) 0) (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) 0) (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1)) (and (= |ULTIMATE.start_main_~sb~0#1| 1) (= |ULTIMATE.start_main_~tmp~2#1| 1))) [2023-11-06 21:55:08,667 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2023-11-06 21:55:08,667 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 21:55:08,667 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2023-11-06 21:55:08,668 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2023-11-06 21:55:08,672 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 250) no Hoare annotation was computed. [2023-11-06 21:55:08,673 INFO L899 garLoopResultBuilder]: For program point L213(line 213) no Hoare annotation was computed. [2023-11-06 21:55:08,673 INFO L899 garLoopResultBuilder]: For program point L246-2(lines 246 250) no Hoare annotation was computed. [2023-11-06 21:55:08,673 INFO L899 garLoopResultBuilder]: For program point L213-2(line 213) no Hoare annotation was computed. [2023-11-06 21:55:08,673 INFO L899 garLoopResultBuilder]: For program point L213-4(line 213) no Hoare annotation was computed. [2023-11-06 21:55:08,674 INFO L902 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: true [2023-11-06 21:55:08,674 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2023-11-06 21:55:08,674 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 21:55:08,674 INFO L899 garLoopResultBuilder]: For program point L214(line 214) no Hoare annotation was computed. [2023-11-06 21:55:08,674 INFO L899 garLoopResultBuilder]: For program point L214-2(line 214) no Hoare annotation was computed. [2023-11-06 21:55:08,674 INFO L899 garLoopResultBuilder]: For program point L214-4(line 214) no Hoare annotation was computed. [2023-11-06 21:55:08,674 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2023-11-06 21:55:08,675 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2023-11-06 21:55:08,675 INFO L899 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2023-11-06 21:55:08,675 INFO L899 garLoopResultBuilder]: For program point L173-2(line 173) no Hoare annotation was computed. [2023-11-06 21:55:08,675 INFO L899 garLoopResultBuilder]: For program point L173-4(line 173) no Hoare annotation was computed. [2023-11-06 21:55:08,675 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 21:55:08,675 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2023-11-06 21:55:08,675 INFO L899 garLoopResultBuilder]: For program point L256-1(lines 256 272) no Hoare annotation was computed. [2023-11-06 21:55:08,676 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2023-11-06 21:55:08,676 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2023-11-06 21:55:08,676 INFO L899 garLoopResultBuilder]: For program point L257(lines 257 266) no Hoare annotation was computed. [2023-11-06 21:55:08,676 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (and (= 0 |ULTIMATE.start_main_~tmp___1~0#1|) (= 0 |ULTIMATE.start_main_~tmp___0~0#1|)) [2023-11-06 21:55:08,676 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 164) no Hoare annotation was computed. [2023-11-06 21:55:08,676 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2023-11-06 21:55:08,677 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (or (< |ULTIMATE.start_main_~sb~0#1| 0) (and (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) 0) (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1)) (and (= |ULTIMATE.start_main_~sb~0#1| 1) (= |ULTIMATE.start_main_~tmp~2#1| 1))) [2023-11-06 21:55:08,677 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (or (= |ULTIMATE.start_main_~zero~0#1| 0) (and (<= (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 0) (= |ULTIMATE.start_main_~a~0#1| 0))) [2023-11-06 21:55:08,677 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2023-11-06 21:55:08,677 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-11-06 21:55:08,677 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2023-11-06 21:55:08,677 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2023-11-06 21:55:08,678 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2023-11-06 21:55:08,678 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 20) the Hoare annotation is: true [2023-11-06 21:55:08,678 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-11-06 21:55:08,681 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:08,684 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:55:08,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:55:08 BoogieIcfgContainer [2023-11-06 21:55:08,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:55:08,720 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:55:08,720 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:55:08,720 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:55:08,721 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:50" (3/4) ... [2023-11-06 21:55:08,723 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:55:08,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2023-11-06 21:55:08,728 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-06 21:55:08,737 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 21:55:08,738 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-06 21:55:08,739 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:55:08,739 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:55:08,774 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(e) + 1) <= 0) && (!((\old(m) == 0)) || ((\result % 4294967296) < 1))) || ((((m == \old(m)) && (\old(e) <= e)) && ((e == \old(e)) || (e == 0))) && (__retres4 == 0))) || (0 < (\old(m) % 4294967296))) || ((((\old(e) <= e) && ((e == \old(e)) || (e == 0))) && !((\old(e) == 0))) && (!((\old(m) == 0)) || ((\result % 4294967296) < 1)))) [2023-11-06 21:55:08,774 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((m <= (16777215 + ((m / 4294967296) * 4294967296))) && (m <= 33554430)) && (0 <= m)) || ((((m == \old(m)) && (m <= (16777215 + ((m / 4294967296) * 4294967296)))) && (\old(e) <= e)) && ((e == \old(e)) || (e == 0)))) && (0 < (\old(m) % 4294967296))) [2023-11-06 21:55:08,774 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(e) <= e) && (0 < (\old(m) % 4294967296))) && !((\old(m) == 1))) [2023-11-06 21:55:08,774 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((m <= 33554430) && (0 <= m)) && ((16777216 + ((m / 4294967296) * 4294967296)) <= m)) || ((\old(e) <= e) && !((\old(m) == 1)))) && (0 < (\old(m) % 4294967296))) && (m <= (33554431 + ((m / 4294967296) * 4294967296)))) [2023-11-06 21:55:08,777 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((sb < 0) || ((((\result % 4294967296) <= 0) && ((__retres10 % 4294967296) <= 0)) && ((zero % 4294967296) < 1))) || ((sb == 1) && (tmp == 1))) [2023-11-06 21:55:08,823 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(e) + 1) <= 0) && (!((\old(m) == 0)) || ((\result % 4294967296) < 1))) || ((((m == \old(m)) && (\old(e) <= e)) && ((e == \old(e)) || (e == 0))) && (__retres4 == 0))) || (0 < (\old(m) % 4294967296))) || ((((\old(e) <= e) && ((e == \old(e)) || (e == 0))) && !((\old(e) == 0))) && (!((\old(m) == 0)) || ((\result % 4294967296) < 1)))) [2023-11-06 21:55:08,823 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((m <= (16777215 + ((m / 4294967296) * 4294967296))) && (m <= 33554430)) && (0 <= m)) || ((((m == \old(m)) && (m <= (16777215 + ((m / 4294967296) * 4294967296)))) && (\old(e) <= e)) && ((e == \old(e)) || (e == 0)))) && (0 < (\old(m) % 4294967296))) [2023-11-06 21:55:08,823 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(e) <= e) && (0 < (\old(m) % 4294967296))) && !((\old(m) == 1))) [2023-11-06 21:55:08,823 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((m <= 33554430) && (0 <= m)) && ((16777216 + ((m / 4294967296) * 4294967296)) <= m)) || ((\old(e) <= e) && !((\old(m) == 1)))) && (0 < (\old(m) % 4294967296))) && (m <= (33554431 + ((m / 4294967296) * 4294967296)))) [2023-11-06 21:55:08,826 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((sb < 0) || ((((\result % 4294967296) <= 0) && ((__retres10 % 4294967296) <= 0)) && ((zero % 4294967296) < 1))) || ((sb == 1) && (tmp == 1))) [2023-11-06 21:55:08,844 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:55:08,844 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:55:08,845 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:55:08,846 INFO L158 Benchmark]: Toolchain (without parser) took 19001.83ms. Allocated memory was 157.3MB in the beginning and 285.2MB in the end (delta: 127.9MB). Free memory was 125.4MB in the beginning and 202.4MB in the end (delta: -77.0MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2023-11-06 21:55:08,846 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:55:08,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.65ms. Allocated memory is still 157.3MB. Free memory was 124.8MB in the beginning and 112.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:55:08,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.98ms. Allocated memory is still 157.3MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:55:08,849 INFO L158 Benchmark]: Boogie Preprocessor took 37.02ms. Allocated memory is still 157.3MB. Free memory was 109.9MB in the beginning and 108.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:55:08,850 INFO L158 Benchmark]: RCFGBuilder took 640.59ms. Allocated memory is still 157.3MB. Free memory was 108.3MB in the beginning and 89.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 21:55:08,850 INFO L158 Benchmark]: TraceAbstraction took 17751.72ms. Allocated memory was 157.3MB in the beginning and 285.2MB in the end (delta: 127.9MB). Free memory was 88.5MB in the beginning and 207.6MB in the end (delta: -119.1MB). Peak memory consumption was 134.2MB. Max. memory is 16.1GB. [2023-11-06 21:55:08,851 INFO L158 Benchmark]: Witness Printer took 125.15ms. Allocated memory is still 285.2MB. Free memory was 207.6MB in the beginning and 202.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:55:08,858 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.65ms. Allocated memory is still 157.3MB. Free memory was 124.8MB in the beginning and 112.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.98ms. Allocated memory is still 157.3MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.02ms. Allocated memory is still 157.3MB. Free memory was 109.9MB in the beginning and 108.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 640.59ms. Allocated memory is still 157.3MB. Free memory was 108.3MB in the beginning and 89.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17751.72ms. Allocated memory was 157.3MB in the beginning and 285.2MB in the end (delta: 127.9MB). Free memory was 88.5MB in the beginning and 207.6MB in the end (delta: -119.1MB). Peak memory consumption was 134.2MB. Max. memory is 16.1GB. * Witness Printer took 125.15ms. Allocated memory is still 285.2MB. Free memory was 207.6MB in the beginning and 202.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.6s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1022 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1022 mSDsluCounter, 5896 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4813 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1754 IncrementalHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 1083 mSDtfsCounter, 1754 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1132 GetRequests, 950 SyntacticMatches, 4 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=7, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 204 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 217 PreInvPairs, 536 NumberOfFragments, 242 HoareAnnotationTreeSize, 217 FomulaSimplifications, 76742 FormulaSimplificationTreeSizeReduction, 4.4s HoareSimplificationTime, 14 FomulaSimplificationsInter, 3176 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1335 NumberOfCodeBlocks, 1301 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1664 ConstructedInterpolants, 0 QuantifiedInterpolants, 2999 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1548 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 792/968 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: ((((((m <= 33554430) && (0 <= m)) && ((16777216 + ((m / 4294967296) * 4294967296)) <= m)) || ((\old(e) <= e) && !((\old(m) == 1)))) && (0 < (\old(m) % 4294967296))) && (m <= (33554431 + ((m / 4294967296) * 4294967296)))) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (((sb < 0) || (((__retres10 % 4294967296) <= 0) && ((zero % 4294967296) < 1))) || ((sb == 1) && (tmp == 1))) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((\old(e) + 1) <= 0) && (!((\old(m) == 0)) || ((\result % 4294967296) < 1))) || ((((m == \old(m)) && (\old(e) <= e)) && ((e == \old(e)) || (e == 0))) && (__retres4 == 0))) || (0 < (\old(m) % 4294967296))) || ((((\old(e) <= e) && ((e == \old(e)) || (e == 0))) && !((\old(e) == 0))) && (!((\old(m) == 0)) || ((\result % 4294967296) < 1)))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((m <= (16777215 + ((m / 4294967296) * 4294967296))) && (m <= 33554430)) && (0 <= m)) || ((((m == \old(m)) && (m <= (16777215 + ((m / 4294967296) * 4294967296)))) && (\old(e) <= e)) && ((e == \old(e)) || (e == 0)))) && (0 < (\old(m) % 4294967296))) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((\old(e) <= e) && (0 < (\old(m) % 4294967296))) && !((\old(m) == 1))) - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: (((sb < 0) || ((((\result % 4294967296) <= 0) && ((__retres10 % 4294967296) <= 0)) && ((zero % 4294967296) < 1))) || ((sb == 1) && (tmp == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-06 21:55:08,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1c3d36-25d4-4c0c-9e22-45a7853f735c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE