./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:04:39,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:04:40,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 18:04:40,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:04:40,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:04:40,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:04:40,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:04:40,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:04:40,057 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:04:40,057 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:04:40,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:04:40,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:04:40,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:04:40,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:04:40,060 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:04:40,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:04:40,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:04:40,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:04:40,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:04:40,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:04:40,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:04:40,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:04:40,070 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:04:40,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:04:40,071 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:04:40,071 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:04:40,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:04:40,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:04:40,072 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:04:40,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:04:40,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:04:40,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:04:40,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:04:40,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:04:40,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:04:40,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:04:40,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:04:40,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:04:40,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:04:40,083 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_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb [2024-11-08 18:04:40,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:04:40,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:04:40,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:04:40,408 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:04:40,409 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:04:40,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c Unable to find full path for "g++" [2024-11-08 18:04:42,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:04:42,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:04:42,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2024-11-08 18:04:42,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/data/56d178c97/008edaa1c8304a1eb1c7702bb8d0c1dc/FLAG57676defc [2024-11-08 18:04:42,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/data/56d178c97/008edaa1c8304a1eb1c7702bb8d0c1dc [2024-11-08 18:04:42,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:04:42,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:04:42,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:04:42,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:04:42,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:04:42,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:04:42" (1/1) ... [2024-11-08 18:04:42,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77676617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:42, skipping insertion in model container [2024-11-08 18:04:42,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:04:42" (1/1) ... [2024-11-08 18:04:42,923 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:04:43,144 WARN L250 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_d822d521-bde5-4cbb-afcb-40e8d0965c96/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2024-11-08 18:04:43,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:04:43,204 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:04:43,216 WARN L250 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_d822d521-bde5-4cbb-afcb-40e8d0965c96/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2024-11-08 18:04:43,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:04:43,251 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:04:43,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43 WrapperNode [2024-11-08 18:04:43,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:04:43,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:04:43,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:04:43,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:04:43,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,309 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 99 [2024-11-08 18:04:43,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:04:43,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:04:43,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:04:43,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:04:43,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,342 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:04:43,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:04:43,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:04:43,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:04:43,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:04:43,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (1/1) ... [2024-11-08 18:04:43,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:04:43,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:43,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:04:43,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:04:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:04:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:04:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:04:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:04:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 18:04:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 18:04:43,541 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:04:43,544 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:04:43,938 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-08 18:04:43,938 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:04:43,956 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:04:43,956 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:04:43,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:04:43 BoogieIcfgContainer [2024-11-08 18:04:43,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:04:43,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:04:43,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:04:43,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:04:43,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:04:42" (1/3) ... [2024-11-08 18:04:43,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14149452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:04:43, skipping insertion in model container [2024-11-08 18:04:43,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:43" (2/3) ... [2024-11-08 18:04:43,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14149452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:04:43, skipping insertion in model container [2024-11-08 18:04:43,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:04:43" (3/3) ... [2024-11-08 18:04:43,970 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.factorial4even.c [2024-11-08 18:04:43,987 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:04:43,987 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:04:44,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:04:44,049 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b249f30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:04:44,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:04:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 18:04:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 18:04:44,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:44,065 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:44,066 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:44,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash -705864700, now seen corresponding path program 1 times [2024-11-08 18:04:44,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:44,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012117498] [2024-11-08 18:04:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:44,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:04:45,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:45,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012117498] [2024-11-08 18:04:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012117498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:45,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:04:45,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523483104] [2024-11-08 18:04:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:45,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:04:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:04:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:04:45,112 INFO L87 Difference]: Start difference. First operand has 37 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:45,423 INFO L93 Difference]: Finished difference Result 81 states and 118 transitions. [2024-11-08 18:04:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:04:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 18:04:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:45,437 INFO L225 Difference]: With dead ends: 81 [2024-11-08 18:04:45,438 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 18:04:45,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:04:45,450 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 94 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:45,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 114 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:04:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 18:04:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2024-11-08 18:04:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 34 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:04:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-08 18:04:45,490 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 11 [2024-11-08 18:04:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:45,491 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-08 18:04:45,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-08 18:04:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 18:04:45,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:45,493 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:45,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:04:45,494 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:45,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1413189840, now seen corresponding path program 1 times [2024-11-08 18:04:45,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:45,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478384220] [2024-11-08 18:04:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:45,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:45,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:04:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:04:45,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:45,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478384220] [2024-11-08 18:04:45,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478384220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:45,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:45,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:04:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513245435] [2024-11-08 18:04:45,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:45,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:04:45,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:04:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:04:45,748 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:04:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:45,830 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2024-11-08 18:04:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:04:45,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-08 18:04:45,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:45,835 INFO L225 Difference]: With dead ends: 52 [2024-11-08 18:04:45,837 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 18:04:45,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:04:45,841 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 9 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:45,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 203 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:04:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 18:04:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2024-11-08 18:04:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 39 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:04:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-08 18:04:45,859 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 21 [2024-11-08 18:04:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:45,859 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-08 18:04:45,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:04:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-08 18:04:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 18:04:45,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:45,862 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:45,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:04:45,863 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:45,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash 739787201, now seen corresponding path program 1 times [2024-11-08 18:04:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:45,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115299998] [2024-11-08 18:04:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:45,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:45,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:04:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:04:45,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115299998] [2024-11-08 18:04:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115299998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:45,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:45,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:04:45,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604301600] [2024-11-08 18:04:45,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:45,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:04:45,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:04:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:04:45,999 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:04:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:46,040 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2024-11-08 18:04:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:04:46,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-08 18:04:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:46,042 INFO L225 Difference]: With dead ends: 76 [2024-11-08 18:04:46,044 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 18:04:46,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:04:46,046 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:46,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:04:46,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 18:04:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-08 18:04:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 41 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:04:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-11-08 18:04:46,068 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 22 [2024-11-08 18:04:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:46,069 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-11-08 18:04:46,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:04:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-11-08 18:04:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 18:04:46,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:46,071 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:46,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:04:46,072 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:46,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1449758743, now seen corresponding path program 1 times [2024-11-08 18:04:46,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:46,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929295217] [2024-11-08 18:04:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:46,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:04:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:04:46,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929295217] [2024-11-08 18:04:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929295217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:46,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:46,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:04:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627150586] [2024-11-08 18:04:46,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:46,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:04:46,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:04:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:04:46,385 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:04:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:46,491 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2024-11-08 18:04:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:04:46,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-08 18:04:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:46,493 INFO L225 Difference]: With dead ends: 89 [2024-11-08 18:04:46,493 INFO L226 Difference]: Without dead ends: 58 [2024-11-08 18:04:46,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:04:46,495 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:46,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 148 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-08 18:04:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2024-11-08 18:04:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 42 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:04:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2024-11-08 18:04:46,505 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 23 [2024-11-08 18:04:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:46,506 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2024-11-08 18:04:46,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:04:46,506 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2024-11-08 18:04:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 18:04:46,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:46,507 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:46,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:04:46,508 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:46,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1232620284, now seen corresponding path program 1 times [2024-11-08 18:04:46,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:46,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639108433] [2024-11-08 18:04:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:46,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:04:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:46,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:04:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:04:46,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639108433] [2024-11-08 18:04:46,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639108433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919296469] [2024-11-08 18:04:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:46,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:46,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:46,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:46,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:04:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:47,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 18:04:47,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:04:47,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:04:47,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919296469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:47,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:47,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 24 [2024-11-08 18:04:47,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571990105] [2024-11-08 18:04:47,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:47,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 18:04:47,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 18:04:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:04:47,821 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 24 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 23 states have internal predecessors, (58), 8 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-08 18:04:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:48,429 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2024-11-08 18:04:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:04:48,430 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 23 states have internal predecessors, (58), 8 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2024-11-08 18:04:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:48,431 INFO L225 Difference]: With dead ends: 88 [2024-11-08 18:04:48,431 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 18:04:48,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 18:04:48,433 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 357 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:48,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 290 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:04:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 18:04:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2024-11-08 18:04:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 48 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 18:04:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-08 18:04:48,445 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 30 [2024-11-08 18:04:48,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:48,445 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-08 18:04:48,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 23 states have internal predecessors, (58), 8 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-08 18:04:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-08 18:04:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 18:04:48,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:48,447 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:04:48,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:04:48,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:48,648 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:48,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:48,648 INFO L85 PathProgramCache]: Analyzing trace with hash 665699164, now seen corresponding path program 1 times [2024-11-08 18:04:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:48,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109312820] [2024-11-08 18:04:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:48,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:48,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:04:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:48,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:04:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:04:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109312820] [2024-11-08 18:04:48,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109312820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:48,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:04:48,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29759543] [2024-11-08 18:04:48,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:48,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:04:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:04:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:04:48,855 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 18:04:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:48,961 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2024-11-08 18:04:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:04:48,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-08 18:04:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:48,963 INFO L225 Difference]: With dead ends: 104 [2024-11-08 18:04:48,963 INFO L226 Difference]: Without dead ends: 66 [2024-11-08 18:04:48,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:04:48,965 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:48,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 66 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-08 18:04:48,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-11-08 18:04:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 54 states have internal predecessors, (64), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 18:04:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-08 18:04:48,983 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 31 [2024-11-08 18:04:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:48,983 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-08 18:04:48,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 18:04:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-08 18:04:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-08 18:04:48,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:48,987 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:04:48,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:04:48,987 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:48,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2046570951, now seen corresponding path program 1 times [2024-11-08 18:04:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:48,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81156587] [2024-11-08 18:04:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:49,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:04:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:49,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:04:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:04:49,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81156587] [2024-11-08 18:04:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81156587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285583062] [2024-11-08 18:04:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:49,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:49,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:49,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:04:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:49,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 18:04:49,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:04:50,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:04:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285583062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:51,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:51,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 16] total 30 [2024-11-08 18:04:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589271631] [2024-11-08 18:04:51,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:51,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 18:04:51,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 18:04:51,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-11-08 18:04:51,191 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 30 states, 25 states have (on average 2.2) internal successors, (55), 29 states have internal predecessors, (55), 7 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 18:04:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:52,275 INFO L93 Difference]: Finished difference Result 151 states and 189 transitions. [2024-11-08 18:04:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:04:52,276 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 2.2) internal successors, (55), 29 states have internal predecessors, (55), 7 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32 [2024-11-08 18:04:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:52,277 INFO L225 Difference]: With dead ends: 151 [2024-11-08 18:04:52,278 INFO L226 Difference]: Without dead ends: 113 [2024-11-08 18:04:52,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=313, Invalid=1493, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 18:04:52,280 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 288 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:52,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 356 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:04:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-08 18:04:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2024-11-08 18:04:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 80 states have internal predecessors, (92), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 18:04:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2024-11-08 18:04:52,295 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 32 [2024-11-08 18:04:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:52,295 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2024-11-08 18:04:52,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 2.2) internal successors, (55), 29 states have internal predecessors, (55), 7 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 18:04:52,296 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2024-11-08 18:04:52,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 18:04:52,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:52,297 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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] [2024-11-08 18:04:52,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:04:52,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:52,502 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:52,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1524349228, now seen corresponding path program 1 times [2024-11-08 18:04:52,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56857638] [2024-11-08 18:04:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:52,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:53,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:04:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:53,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:04:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:53,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 18:04:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:04:53,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:53,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56857638] [2024-11-08 18:04:53,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56857638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:53,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55901489] [2024-11-08 18:04:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:53,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:53,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:53,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:53,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:04:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:53,318 WARN L253 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-08 18:04:53,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:04:54,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:04:56,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55901489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:56,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:56,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 21] total 41 [2024-11-08 18:04:56,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182709953] [2024-11-08 18:04:56,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:56,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 18:04:56,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 18:04:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:04:56,680 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 41 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 39 states have internal predecessors, (82), 10 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-08 18:04:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:59,517 INFO L93 Difference]: Finished difference Result 166 states and 201 transitions. [2024-11-08 18:04:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 18:04:59,518 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 39 states have internal predecessors, (82), 10 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 44 [2024-11-08 18:04:59,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:59,520 INFO L225 Difference]: With dead ends: 166 [2024-11-08 18:04:59,521 INFO L226 Difference]: Without dead ends: 103 [2024-11-08 18:04:59,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=879, Invalid=4973, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 18:04:59,527 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 194 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:59,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 162 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:04:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-08 18:04:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2024-11-08 18:04:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 76 states have internal predecessors, (85), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 18:04:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2024-11-08 18:04:59,555 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 44 [2024-11-08 18:04:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:59,556 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2024-11-08 18:04:59,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 39 states have internal predecessors, (82), 10 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-08 18:04:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2024-11-08 18:04:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 18:04:59,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:59,558 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:59,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:04:59,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:59,759 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:59,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:59,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1333830852, now seen corresponding path program 1 times [2024-11-08 18:04:59,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:59,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269119129] [2024-11-08 18:04:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:59,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:05:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:05:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 18:05:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 18:05:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 18:05:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 18:05:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 18:05:00,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269119129] [2024-11-08 18:05:00,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269119129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659028163] [2024-11-08 18:05:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:00,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:00,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:00,582 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:00,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:05:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-08 18:05:00,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 29 proven. 53 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 18:05:02,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 29 proven. 53 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 18:05:21,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659028163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:21,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:21,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 23] total 50 [2024-11-08 18:05:21,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683187103] [2024-11-08 18:05:21,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:21,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 18:05:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 18:05:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2037, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 18:05:21,558 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand has 50 states, 44 states have (on average 2.772727272727273) internal successors, (122), 49 states have internal predecessors, (122), 16 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 12 states have call predecessors, (18), 15 states have call successors, (18) [2024-11-08 18:05:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:24,354 INFO L93 Difference]: Finished difference Result 204 states and 251 transitions. [2024-11-08 18:05:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 18:05:24,355 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 44 states have (on average 2.772727272727273) internal successors, (122), 49 states have internal predecessors, (122), 16 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 12 states have call predecessors, (18), 15 states have call successors, (18) Word has length 73 [2024-11-08 18:05:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:24,356 INFO L225 Difference]: With dead ends: 204 [2024-11-08 18:05:24,357 INFO L226 Difference]: Without dead ends: 144 [2024-11-08 18:05:24,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=995, Invalid=4407, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 18:05:24,359 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 298 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:24,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 309 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:05:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-08 18:05:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2024-11-08 18:05:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 121 states have internal predecessors, (138), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-08 18:05:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2024-11-08 18:05:24,378 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 73 [2024-11-08 18:05:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:24,379 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2024-11-08 18:05:24,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 44 states have (on average 2.772727272727273) internal successors, (122), 49 states have internal predecessors, (122), 16 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 12 states have call predecessors, (18), 15 states have call successors, (18) [2024-11-08 18:05:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2024-11-08 18:05:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 18:05:24,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:24,381 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:24,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:24,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:24,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:24,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:24,585 INFO L85 PathProgramCache]: Analyzing trace with hash 190682599, now seen corresponding path program 2 times [2024-11-08 18:05:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779086959] [2024-11-08 18:05:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:24,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:26,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 18:05:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:26,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:05:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:26,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 18:05:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:26,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 18:05:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:26,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 18:05:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:26,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 18:05:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 18:05:26,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:26,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779086959] [2024-11-08 18:05:26,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779086959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:26,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648883249] [2024-11-08 18:05:26,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:05:26,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:26,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:26,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:26,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:05:26,276 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:05:26,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:26,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-08 18:05:26,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 18:05:28,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 23 proven. 49 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 18:05:44,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648883249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:44,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:44,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 25] total 56 [2024-11-08 18:05:44,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736495514] [2024-11-08 18:05:44,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:44,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 18:05:44,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:44,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 18:05:44,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=2706, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 18:05:44,718 INFO L87 Difference]: Start difference. First operand 140 states and 172 transitions. Second operand has 56 states, 51 states have (on average 2.5686274509803924) internal successors, (131), 55 states have internal predecessors, (131), 16 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-08 18:05:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:51,640 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2024-11-08 18:05:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 18:05:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 51 states have (on average 2.5686274509803924) internal successors, (131), 55 states have internal predecessors, (131), 16 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) Word has length 74 [2024-11-08 18:05:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:51,642 INFO L225 Difference]: With dead ends: 157 [2024-11-08 18:05:51,643 INFO L226 Difference]: Without dead ends: 155 [2024-11-08 18:05:51,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1302, Invalid=6354, Unknown=0, NotChecked=0, Total=7656 [2024-11-08 18:05:51,646 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 630 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:51,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 353 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:05:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-08 18:05:51,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 144. [2024-11-08 18:05:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 120 states have (on average 1.175) internal successors, (141), 124 states have internal predecessors, (141), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-08 18:05:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 175 transitions. [2024-11-08 18:05:51,665 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 175 transitions. Word has length 74 [2024-11-08 18:05:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:51,666 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 175 transitions. [2024-11-08 18:05:51,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 51 states have (on average 2.5686274509803924) internal successors, (131), 55 states have internal predecessors, (131), 16 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-08 18:05:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 175 transitions. [2024-11-08 18:05:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-08 18:05:51,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:51,668 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:51,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:05:51,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:05:51,868 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:51,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:51,869 INFO L85 PathProgramCache]: Analyzing trace with hash -509088436, now seen corresponding path program 2 times [2024-11-08 18:05:51,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:51,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029607966] [2024-11-08 18:05:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:51,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:05:51,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964758670] [2024-11-08 18:05:51,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:05:51,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:51,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:51,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:51,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:05:52,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:05:52,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:52,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-08 18:05:52,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 38 proven. 57 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 18:05:56,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:58,567 WARN L286 SmtUtils]: Spent 6.54s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 18:07:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029607966] [2024-11-08 18:07:00,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 18:07:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964758670] [2024-11-08 18:07:00,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964758670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:00,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:07:00,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-08 18:07:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759598844] [2024-11-08 18:07:00,396 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:00,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:07:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:07:00,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=735, Unknown=9, NotChecked=0, Total=930 [2024-11-08 18:07:00,398 INFO L87 Difference]: Start difference. First operand 144 states and 175 transitions. Second operand has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-08 18:07:14,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:07:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:14,442 INFO L93 Difference]: Finished difference Result 305 states and 372 transitions. [2024-11-08 18:07:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:07:14,443 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 86 [2024-11-08 18:07:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:14,445 INFO L225 Difference]: With dead ends: 305 [2024-11-08 18:07:14,445 INFO L226 Difference]: Without dead ends: 190 [2024-11-08 18:07:14,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 66.6s TimeCoverageRelationStatistics Valid=438, Invalid=1533, Unknown=9, NotChecked=0, Total=1980 [2024-11-08 18:07:14,448 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 94 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:14,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 100 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 18:07:14,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-08 18:07:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2024-11-08 18:07:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 145 states have (on average 1.1517241379310346) internal successors, (167), 148 states have internal predecessors, (167), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-08 18:07:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 209 transitions. [2024-11-08 18:07:14,486 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 209 transitions. Word has length 86 [2024-11-08 18:07:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:14,487 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 209 transitions. [2024-11-08 18:07:14,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-08 18:07:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 209 transitions. [2024-11-08 18:07:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-08 18:07:14,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:14,492 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:14,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:07:14,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:07:14,696 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:14,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1657373377, now seen corresponding path program 1 times [2024-11-08 18:07:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186386438] [2024-11-08 18:07:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:07:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195336995] [2024-11-08 18:07:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:14,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:14,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:14,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:14,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:07:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:07:15,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:07:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:07:15,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:07:15,314 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:07:15,315 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 18:07:15,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:07:15,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:07:15,520 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:15,574 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:15,578 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:15,588 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:15,588 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:15,599 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 18:07:15,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:07:15 BoogieIcfgContainer [2024-11-08 18:07:15,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 18:07:15,607 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 18:07:15,607 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 18:07:15,607 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 18:07:15,607 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:04:43" (3/4) ... [2024-11-08 18:07:15,612 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 18:07:15,613 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 18:07:15,614 INFO L158 Benchmark]: Toolchain (without parser) took 152761.88ms. Allocated memory was 144.7MB in the beginning and 343.9MB in the end (delta: 199.2MB). Free memory was 105.3MB in the beginning and 301.2MB in the end (delta: -195.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2024-11-08 18:07:15,614 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 144.7MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:07:15,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.59ms. Allocated memory is still 144.7MB. Free memory was 105.3MB in the beginning and 92.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 18:07:15,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.07ms. Allocated memory is still 144.7MB. Free memory was 91.7MB in the beginning and 88.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 18:07:15,615 INFO L158 Benchmark]: Boogie Preprocessor took 49.96ms. Allocated memory is still 144.7MB. Free memory was 88.7MB in the beginning and 86.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 18:07:15,615 INFO L158 Benchmark]: RCFGBuilder took 596.76ms. Allocated memory is still 144.7MB. Free memory was 86.2MB in the beginning and 67.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 18:07:15,616 INFO L158 Benchmark]: TraceAbstraction took 151646.03ms. Allocated memory was 144.7MB in the beginning and 343.9MB in the end (delta: 199.2MB). Free memory was 67.3MB in the beginning and 302.3MB in the end (delta: -235.0MB). Peak memory consumption was 168.7MB. Max. memory is 16.1GB. [2024-11-08 18:07:15,616 INFO L158 Benchmark]: Witness Printer took 6.88ms. Allocated memory is still 343.9MB. Free memory was 302.3MB in the beginning and 301.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:07:15,618 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 144.7MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.59ms. Allocated memory is still 144.7MB. Free memory was 105.3MB in the beginning and 92.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.07ms. Allocated memory is still 144.7MB. Free memory was 91.7MB in the beginning and 88.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.96ms. Allocated memory is still 144.7MB. Free memory was 88.7MB in the beginning and 86.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 596.76ms. Allocated memory is still 144.7MB. Free memory was 86.2MB in the beginning and 67.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 151646.03ms. Allocated memory was 144.7MB in the beginning and 343.9MB in the end (delta: 199.2MB). Free memory was 67.3MB in the beginning and 302.3MB in the end (delta: -235.0MB). Peak memory consumption was 168.7MB. Max. memory is 16.1GB. * Witness Printer took 6.88ms. Allocated memory is still 343.9MB. Free memory was 302.3MB in the beginning and 301.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L34] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 4); [L35] const SORT_1 msb_SORT_1 = (SORT_1)1 << (4 - 1); [L37] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 1); [L38] const SORT_12 msb_SORT_12 = (SORT_12)1 << (1 - 1); [L40] const SORT_1 var_2 = 1; [L41] const SORT_1 var_11 = mask_SORT_1; [L42] const SORT_1 var_16 = 3; [L45] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_12=1, mask_SORT_1=15, var_11=15, var_16=3, var_2=1] [L45] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_12=1, mask_SORT_1=15, var_11=15, var_16=3, var_2=1] [L46] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 init_5_arg_1 = var_2; [L49] state_3 = init_5_arg_1 [L50] SORT_1 init_6_arg_1 = var_2; [L51] state_4 = init_6_arg_1 VAL [mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_18_arg_0=0, var_18_arg_1=1, var_2=1] [L68] EXPR var_18_arg_0 & var_18_arg_1 VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1, var_7=2] [L76] EXPR var_7 & mask_SORT_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_18_arg_0=0, var_18_arg_1=1, var_2=1] [L68] EXPR var_18_arg_0 & var_18_arg_1 VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1, var_7=3] [L76] EXPR var_7 & mask_SORT_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_18_arg_0=0, var_18_arg_1=2, var_2=1] [L68] EXPR var_18_arg_0 & var_18_arg_1 VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1, var_7=4] [L76] EXPR var_7 & mask_SORT_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_18_arg_0=1, var_18_arg_1=6, var_2=1] [L68] EXPR var_18_arg_0 & var_18_arg_1 VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=1, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=0] [L29] COND TRUE !(cond) VAL [\old(cond)=0] [L29] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 151.5s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2081 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2059 mSDsluCounter, 2217 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1953 mSDsCounter, 278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3643 IncrementalHoareTripleChecker+Invalid, 3921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 278 mSolverCounterUnsat, 264 mSDtfsCounter, 3643 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 903 GetRequests, 521 SyntacticMatches, 7 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7048 ImplicationChecksByTransitivity, 90.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=11, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 129 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 117.9s InterpolantComputationTime, 960 NumberOfCodeBlocks, 960 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 932 ConstructedInterpolants, 32 QuantifiedInterpolants, 24263 SizeOfPredicates, 58 NumberOfNonLiveVariables, 1313 ConjunctsInSsa, 505 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 612/1011 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 18:07:15,840 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-11-08 18:07:15,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:07:18,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:07:18,385 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-08 18:07:18,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:07:18,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:07:18,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:07:18,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:07:18,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:07:18,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:07:18,444 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:07:18,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:07:18,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:07:18,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:07:18,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:07:18,449 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:07:18,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:07:18,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:07:18,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:07:18,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:07:18,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:07:18,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:07:18,456 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 18:07:18,456 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 18:07:18,457 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:07:18,457 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 18:07:18,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:07:18,458 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:07:18,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:07:18,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:07:18,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:07:18,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:07:18,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:07:18,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:07:18,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:07:18,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:07:18,463 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 18:07:18,463 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 18:07:18,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:07:18,464 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:07:18,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:07:18,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:07:18,465 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_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb [2024-11-08 18:07:18,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:07:19,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:07:19,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:07:19,022 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:07:19,022 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:07:19,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c Unable to find full path for "g++" [2024-11-08 18:07:21,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:07:21,419 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:07:21,419 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2024-11-08 18:07:21,429 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/data/8432a60f7/9ab03c767cf2429686947e2965238cc7/FLAG9472d8d25 [2024-11-08 18:07:21,736 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/data/8432a60f7/9ab03c767cf2429686947e2965238cc7 [2024-11-08 18:07:21,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:07:21,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:07:21,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:07:21,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:07:21,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:07:21,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:07:21" (1/1) ... [2024-11-08 18:07:21,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f934d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:21, skipping insertion in model container [2024-11-08 18:07:21,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:07:21" (1/1) ... [2024-11-08 18:07:21,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:07:21,952 WARN L250 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_d822d521-bde5-4cbb-afcb-40e8d0965c96/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2024-11-08 18:07:21,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:07:21,999 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:07:22,012 WARN L250 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_d822d521-bde5-4cbb-afcb-40e8d0965c96/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2024-11-08 18:07:22,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:07:22,044 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:07:22,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22 WrapperNode [2024-11-08 18:07:22,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:07:22,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:07:22,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:07:22,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:07:22,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,081 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2024-11-08 18:07:22,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:07:22,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:07:22,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:07:22,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:07:22,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,108 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:07:22,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,109 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,122 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:07:22,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:07:22,123 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:07:22,123 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:07:22,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (1/1) ... [2024-11-08 18:07:22,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:07:22,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:22,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:07:22,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:07:22,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:07:22,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 18:07:22,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:07:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:07:22,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 18:07:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 18:07:22,336 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:07:22,346 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:07:22,608 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-08 18:07:22,609 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:07:22,627 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:07:22,627 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:07:22,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:07:22 BoogieIcfgContainer [2024-11-08 18:07:22,628 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:07:22,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:07:22,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:07:22,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:07:22,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:07:21" (1/3) ... [2024-11-08 18:07:22,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611547b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:07:22, skipping insertion in model container [2024-11-08 18:07:22,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:07:22" (2/3) ... [2024-11-08 18:07:22,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611547b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:07:22, skipping insertion in model container [2024-11-08 18:07:22,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:07:22" (3/3) ... [2024-11-08 18:07:22,645 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.factorial4even.c [2024-11-08 18:07:22,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:07:22,667 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:07:22,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:07:22,761 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2bfc8c67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:07:22,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:07:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 18:07:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 18:07:22,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:22,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:22,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:22,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1810308894, now seen corresponding path program 1 times [2024-11-08 18:07:22,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:22,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33537019] [2024-11-08 18:07:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:22,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:22,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:22,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:22,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:07:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:22,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:07:22,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:23,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:07:23,080 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:07:23,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33537019] [2024-11-08 18:07:23,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33537019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:07:23,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:07:23,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:07:23,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18279316] [2024-11-08 18:07:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:07:23,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:07:23,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:07:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:07:23,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:07:23,129 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:23,242 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2024-11-08 18:07:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:07:23,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 18:07:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:23,265 INFO L225 Difference]: With dead ends: 37 [2024-11-08 18:07:23,267 INFO L226 Difference]: Without dead ends: 22 [2024-11-08 18:07:23,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:07:23,279 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:23,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:07:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-08 18:07:23,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2024-11-08 18:07:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:07:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-08 18:07:23,323 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7 [2024-11-08 18:07:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:23,324 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-08 18:07:23,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:23,325 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-08 18:07:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 18:07:23,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:23,326 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:23,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:07:23,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:23,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:23,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash 24246045, now seen corresponding path program 1 times [2024-11-08 18:07:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:23,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646639976] [2024-11-08 18:07:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:23,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:23,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:07:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:23,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:07:23,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:23,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:24,094 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:07:24,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646639976] [2024-11-08 18:07:24,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646639976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:24,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1175901100] [2024-11-08 18:07:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:24,095 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:07:24,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:07:24,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:07:24,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-08 18:07:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:24,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:07:24,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:24,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:07:24,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1175901100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:07:24,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:07:24,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2024-11-08 18:07:24,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239082796] [2024-11-08 18:07:24,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:07:24,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:07:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:07:24,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:07:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:07:24,355 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:07:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:24,455 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-08 18:07:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:07:24,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-08 18:07:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:24,457 INFO L225 Difference]: With dead ends: 28 [2024-11-08 18:07:24,458 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 18:07:24,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:07:24,461 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:24,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 48 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:07:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 18:07:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-08 18:07:24,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:07:24,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-08 18:07:24,475 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 13 [2024-11-08 18:07:24,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:24,476 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-08 18:07:24,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:07:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-08 18:07:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 18:07:24,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:24,478 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:24,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-08 18:07:24,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:24,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:24,879 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:24,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash 702068858, now seen corresponding path program 1 times [2024-11-08 18:07:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:24,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435108138] [2024-11-08 18:07:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:24,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:24,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:24,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:24,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:07:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:24,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:07:24,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:07:25,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:07:25,407 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:07:25,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435108138] [2024-11-08 18:07:25,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435108138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:25,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:07:25,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2024-11-08 18:07:25,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187539582] [2024-11-08 18:07:25,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:25,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:07:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:07:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:07:25,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:07:25,411 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 18:07:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:25,818 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-11-08 18:07:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:07:25,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2024-11-08 18:07:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:25,820 INFO L225 Difference]: With dead ends: 47 [2024-11-08 18:07:25,820 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 18:07:25,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:07:25,824 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:25,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:07:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 18:07:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-08 18:07:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:07:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-08 18:07:25,857 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 20 [2024-11-08 18:07:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:25,858 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-08 18:07:25,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 18:07:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-08 18:07:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 18:07:25,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:25,860 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:25,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:07:26,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:26,061 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:26,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1657412473, now seen corresponding path program 2 times [2024-11-08 18:07:26,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:26,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719504106] [2024-11-08 18:07:26,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:07:26,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:26,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:26,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:26,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:07:26,141 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:07:26,141 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:26,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:07:26,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:07:26,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:26,539 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:07:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719504106] [2024-11-08 18:07:26,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719504106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:26,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1577397646] [2024-11-08 18:07:26,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:07:26,540 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:07:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:07:26,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:07:26,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-08 18:07:26,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:07:26,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:26,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:07:26,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:07:26,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:26,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1577397646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:26,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:07:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2024-11-08 18:07:26,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69827810] [2024-11-08 18:07:27,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:27,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:07:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:07:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:07:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:07:27,003 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 18:07:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:27,245 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2024-11-08 18:07:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:07:27,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-08 18:07:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:27,248 INFO L225 Difference]: With dead ends: 48 [2024-11-08 18:07:27,249 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 18:07:27,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:07:27,251 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:27,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:07:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 18:07:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-08 18:07:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:07:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-08 18:07:27,271 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 26 [2024-11-08 18:07:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:27,271 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-08 18:07:27,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 18:07:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-08 18:07:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 18:07:27,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:27,274 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-08 18:07:27,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-08 18:07:27,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:27,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:27,676 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:27,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1283517597, now seen corresponding path program 3 times [2024-11-08 18:07:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:27,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489533957] [2024-11-08 18:07:27,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:07:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:27,679 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:27,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:07:27,769 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:07:27,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:27,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:07:27,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 18:07:28,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:28,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:07:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489533957] [2024-11-08 18:07:28,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489533957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1080129325] [2024-11-08 18:07:28,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:07:28,117 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:07:28,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:07:28,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:07:28,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-08 18:07:28,275 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:07:28,275 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:28,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:07:28,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 18:07:28,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1080129325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:28,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:07:28,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2024-11-08 18:07:28,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042436706] [2024-11-08 18:07:28,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:28,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:07:28,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:07:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:07:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:07:28,488 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 18:07:28,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:28,963 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2024-11-08 18:07:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:07:28,964 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2024-11-08 18:07:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:28,965 INFO L225 Difference]: With dead ends: 52 [2024-11-08 18:07:28,965 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 18:07:28,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:07:28,966 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:28,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:07:28,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 18:07:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-08 18:07:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:07:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-11-08 18:07:28,986 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 39 [2024-11-08 18:07:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:28,987 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-11-08 18:07:28,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 18:07:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-11-08 18:07:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:07:28,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:28,989 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-08 18:07:29,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:07:29,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:29,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 18:07:29,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:29,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -63346146, now seen corresponding path program 4 times [2024-11-08 18:07:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:29,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908974620] [2024-11-08 18:07:29,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:07:29,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:29,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:29,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:29,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:07:29,505 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:07:29,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:29,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:07:29,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 18:07:29,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 18:07:30,284 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:07:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908974620] [2024-11-08 18:07:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908974620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:30,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:07:30,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2024-11-08 18:07:30,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983773681] [2024-11-08 18:07:30,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:30,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:07:30,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:07:30,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:07:30,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:07:30,289 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 9 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-08 18:07:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:31,233 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2024-11-08 18:07:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 18:07:31,235 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 9 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 59 [2024-11-08 18:07:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:31,236 INFO L225 Difference]: With dead ends: 84 [2024-11-08 18:07:31,238 INFO L226 Difference]: Without dead ends: 82 [2024-11-08 18:07:31,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:07:31,240 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:31,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 169 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:07:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-08 18:07:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2024-11-08 18:07:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-08 18:07:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2024-11-08 18:07:31,278 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 59 [2024-11-08 18:07:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:31,278 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2024-11-08 18:07:31,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 9 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-08 18:07:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2024-11-08 18:07:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-08 18:07:31,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:31,282 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2024-11-08 18:07:31,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:07:31,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:31,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:31,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:31,486 INFO L85 PathProgramCache]: Analyzing trace with hash 531063418, now seen corresponding path program 5 times [2024-11-08 18:07:31,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:31,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250670630] [2024-11-08 18:07:31,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:07:31,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:31,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:31,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:31,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:07:31,696 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-08 18:07:31,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:31,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 18:07:31,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 41 proven. 244 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-08 18:07:32,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 36 proven. 198 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-08 18:07:33,734 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:07:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250670630] [2024-11-08 18:07:33,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250670630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:33,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:07:33,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 28 [2024-11-08 18:07:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884893365] [2024-11-08 18:07:33,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:33,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:07:33,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:07:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:07:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:07:33,739 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 19 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2024-11-08 18:07:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:36,724 INFO L93 Difference]: Finished difference Result 143 states and 177 transitions. [2024-11-08 18:07:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-08 18:07:36,728 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 19 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) Word has length 124 [2024-11-08 18:07:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:36,730 INFO L225 Difference]: With dead ends: 143 [2024-11-08 18:07:36,730 INFO L226 Difference]: Without dead ends: 141 [2024-11-08 18:07:36,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=736, Invalid=2686, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:07:36,739 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 45 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:36,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 309 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:07:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-08 18:07:36,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2024-11-08 18:07:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 89 states have internal predecessors, (89), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-08 18:07:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 171 transitions. [2024-11-08 18:07:36,795 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 171 transitions. Word has length 124 [2024-11-08 18:07:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:36,796 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 171 transitions. [2024-11-08 18:07:36,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 19 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2024-11-08 18:07:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 171 transitions. [2024-11-08 18:07:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-08 18:07:36,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:36,803 INFO L215 NwaCegarLoop]: trace histogram [29, 28, 28, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-08 18:07:36,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:37,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:37,004 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:37,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2033363554, now seen corresponding path program 6 times [2024-11-08 18:07:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:37,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395399300] [2024-11-08 18:07:37,006 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:07:37,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:37,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:37,007 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:37,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:07:37,316 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-11-08 18:07:37,316 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-08 18:07:37,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:07:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:07:37,558 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-08 18:07:37,558 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:07:37,560 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 18:07:37,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:37,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:37,765 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2024-11-08 18:07:37,818 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,818 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,818 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,818 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,818 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,819 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,866 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 18:07:37,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:07:37 BoogieIcfgContainer [2024-11-08 18:07:37,872 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 18:07:37,872 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 18:07:37,873 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 18:07:37,873 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 18:07:37,873 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:07:22" (3/4) ... [2024-11-08 18:07:37,874 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,926 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,927 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,927 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,927 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,927 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:37,927 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 18:07:38,018 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 18:07:38,018 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 18:07:38,019 INFO L158 Benchmark]: Toolchain (without parser) took 16278.69ms. Allocated memory was 86.0MB in the beginning and 174.1MB in the end (delta: 88.1MB). Free memory was 62.2MB in the beginning and 136.2MB in the end (delta: -74.0MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2024-11-08 18:07:38,019 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 86.0MB. Free memory was 62.0MB in the beginning and 61.8MB in the end (delta: 148.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:07:38,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.47ms. Allocated memory is still 86.0MB. Free memory was 62.0MB in the beginning and 48.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 18:07:38,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.34ms. Allocated memory is still 86.0MB. Free memory was 48.2MB in the beginning and 46.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:07:38,020 INFO L158 Benchmark]: Boogie Preprocessor took 39.46ms. Allocated memory is still 86.0MB. Free memory was 46.8MB in the beginning and 44.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 18:07:38,021 INFO L158 Benchmark]: RCFGBuilder took 505.54ms. Allocated memory is still 86.0MB. Free memory was 44.8MB in the beginning and 57.8MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-08 18:07:38,021 INFO L158 Benchmark]: TraceAbstraction took 15238.07ms. Allocated memory was 86.0MB in the beginning and 174.1MB in the end (delta: 88.1MB). Free memory was 56.9MB in the beginning and 148.8MB in the end (delta: -91.9MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. [2024-11-08 18:07:38,021 INFO L158 Benchmark]: Witness Printer took 145.95ms. Allocated memory is still 174.1MB. Free memory was 148.8MB in the beginning and 136.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 18:07:38,023 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 86.0MB. Free memory was 62.0MB in the beginning and 61.8MB in the end (delta: 148.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.47ms. Allocated memory is still 86.0MB. Free memory was 62.0MB in the beginning and 48.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.34ms. Allocated memory is still 86.0MB. Free memory was 48.2MB in the beginning and 46.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.46ms. Allocated memory is still 86.0MB. Free memory was 46.8MB in the beginning and 44.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 505.54ms. Allocated memory is still 86.0MB. Free memory was 44.8MB in the beginning and 57.8MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15238.07ms. Allocated memory was 86.0MB in the beginning and 174.1MB in the end (delta: 88.1MB). Free memory was 56.9MB in the beginning and 148.8MB in the end (delta: -91.9MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. * Witness Printer took 145.95ms. Allocated memory is still 174.1MB. Free memory was 148.8MB in the beginning and 136.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. 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 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L34] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 4); [L35] const SORT_1 msb_SORT_1 = (SORT_1)1 << (4 - 1); [L37] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 1); [L38] const SORT_12 msb_SORT_12 = (SORT_12)1 << (1 - 1); [L40] const SORT_1 var_2 = 1; [L41] const SORT_1 var_11 = mask_SORT_1; [L42] const SORT_1 var_16 = 3; [L45] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 init_5_arg_1 = var_2; [L49] state_3 = init_5_arg_1 [L50] SORT_1 init_6_arg_1 = var_2; [L51] state_4 = init_6_arg_1 VAL [mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=1, state_4=2, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=2, state_4=3, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=6, state_4=4, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=24, state_4=5, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=24, state_4=5, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=24, state_4=5, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=24, state_4=5, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=120, state_4=6, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=120, state_4=6, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=120, state_4=6, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=120, state_4=6, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-48, state_4=7, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-48, state_4=7, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-48, state_4=7, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-48, state_4=7, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-80, state_4=8, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-80, state_4=8, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-80, state_4=8, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-80, state_4=8, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-128, state_4=9, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-128, state_4=9, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-128, state_4=9, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-128, state_4=9, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-128, state_4=10, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-128, state_4=10, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-128, state_4=10, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=-128, state_4=10, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=11, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=11, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=11, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=11, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=12, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=12, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=12, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=12, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=13, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=13, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=13, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=13, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=14, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=14, var_11=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=14, var_11=15, var_16=3, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=14, var_11=15, var_16=3, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=1, mask_SORT_12=1, mask_SORT_1=15, state_3=0, state_4=15, var_11=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=0] [L29] COND TRUE !(cond) VAL [\old(cond)=0] [L29] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.0s, OverallIterations: 8, TraceHistogramMax: 29, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 778 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 690 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1451 IncrementalHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 88 mSDtfsCounter, 1451 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 649 GetRequests, 498 SyntacticMatches, 4 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=7, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 555 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 556 ConstructedInterpolants, 17 QuantifiedInterpolants, 5292 SizeOfPredicates, 61 NumberOfNonLiveVariables, 974 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 1627/2218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-08 18:07:38,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d822d521-bde5-4cbb-afcb-40e8d0965c96/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE