./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 63b2465af3382507505d15dae126c5fc4c2a382acf5f7b83ac8e7391dc7cb34e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:04:34,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:04:34,716 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 00:04:34,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:04:34,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:04:34,757 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:04:34,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:04:34,758 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:04:34,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:04:34,759 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:04:34,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:04:34,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:04:34,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:04:34,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:04:34,762 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:04:34,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:04:34,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:04:34,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:04:34,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:04:34,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:04:34,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:04:34,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:04:34,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:04:34,767 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:04:34,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:04:34,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:04:34,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:04:34,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:04:34,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:04:34,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:04:34,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:04:34,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:04:34,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:04:34,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:04:34,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:04:34,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:04:34,787 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:04:34,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:04:34,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:04:34,787 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_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63b2465af3382507505d15dae126c5fc4c2a382acf5f7b83ac8e7391dc7cb34e [2023-11-29 00:04:35,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:04:35,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:04:35,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:04:35,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:04:35,036 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:04:35,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c [2023-11-29 00:04:37,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:04:37,959 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:04:37,959 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c [2023-11-29 00:04:37,968 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/data/0c4fc0aaa/d60987ccab71465aa4a9fe63ce09162a/FLAG0ad080c39 [2023-11-29 00:04:37,982 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/data/0c4fc0aaa/d60987ccab71465aa4a9fe63ce09162a [2023-11-29 00:04:37,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:04:37,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:04:37,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:04:37,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:04:37,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:04:38,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:04:37" (1/1) ... [2023-11-29 00:04:38,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c4b864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38, skipping insertion in model container [2023-11-29 00:04:38,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:04:37" (1/1) ... [2023-11-29 00:04:38,025 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:04:38,168 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c[1245,1258] [2023-11-29 00:04:38,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:04:38,205 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:04:38,218 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c[1245,1258] [2023-11-29 00:04:38,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:04:38,245 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:04:38,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38 WrapperNode [2023-11-29 00:04:38,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:04:38,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:04:38,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:04:38,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:04:38,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,299 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2023-11-29 00:04:38,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:04:38,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:04:38,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:04:38,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:04:38,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,331 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-29 00:04:38,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:04:38,350 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:04:38,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:04:38,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:04:38,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (1/1) ... [2023-11-29 00:04:38,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:04:38,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:38,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:04:38,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:04:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:04:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:04:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:04:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:04:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:04:38,515 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:04:38,517 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:04:38,769 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:04:38,794 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:04:38,795 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:04:38,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:38 BoogieIcfgContainer [2023-11-29 00:04:38,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:04:38,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:04:38,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:04:38,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:04:38,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:04:37" (1/3) ... [2023-11-29 00:04:38,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d120d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:04:38, skipping insertion in model container [2023-11-29 00:04:38,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:38" (2/3) ... [2023-11-29 00:04:38,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d120d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:04:38, skipping insertion in model container [2023-11-29 00:04:38,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:38" (3/3) ... [2023-11-29 00:04:38,804 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bug-1.c [2023-11-29 00:04:38,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:04:38,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:04:38,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:04:38,876 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3774875e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:04:38,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:04:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:04:38,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:38,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:38,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:38,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 165303482, now seen corresponding path program 1 times [2023-11-29 00:04:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:38,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093737551] [2023-11-29 00:04:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:38,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093737551] [2023-11-29 00:04:39,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093737551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:39,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:39,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:04:39,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500721362] [2023-11-29 00:04:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:39,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:04:39,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:39,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:04:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:04:39,346 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:39,383 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2023-11-29 00:04:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:04:39,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-29 00:04:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:39,394 INFO L225 Difference]: With dead ends: 42 [2023-11-29 00:04:39,394 INFO L226 Difference]: Without dead ends: 23 [2023-11-29 00:04:39,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:04:39,400 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:39,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 79 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:04:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-29 00:04:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-29 00:04:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2023-11-29 00:04:39,433 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 14 [2023-11-29 00:04:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:39,434 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2023-11-29 00:04:39,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2023-11-29 00:04:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:04:39,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:39,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:39,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:04:39,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:39,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:39,437 INFO L85 PathProgramCache]: Analyzing trace with hash 831165654, now seen corresponding path program 1 times [2023-11-29 00:04:39,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:39,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260158003] [2023-11-29 00:04:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:39,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:39,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260158003] [2023-11-29 00:04:39,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260158003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:39,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:39,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:04:39,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999109276] [2023-11-29 00:04:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:39,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:04:39,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:39,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:04:39,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:04:39,569 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:39,739 INFO L93 Difference]: Finished difference Result 81 states and 115 transitions. [2023-11-29 00:04:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:04:39,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 00:04:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:39,742 INFO L225 Difference]: With dead ends: 81 [2023-11-29 00:04:39,742 INFO L226 Difference]: Without dead ends: 42 [2023-11-29 00:04:39,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:04:39,744 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 131 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:39,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 78 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:04:39,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-29 00:04:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2023-11-29 00:04:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2023-11-29 00:04:39,751 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2023-11-29 00:04:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:39,752 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2023-11-29 00:04:39,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2023-11-29 00:04:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:04:39,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:39,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:04:39,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:39,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2061054446, now seen corresponding path program 1 times [2023-11-29 00:04:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:39,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156152734] [2023-11-29 00:04:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:39,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:39,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:39,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156152734] [2023-11-29 00:04:39,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156152734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:39,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:39,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:04:39,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383316361] [2023-11-29 00:04:39,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:39,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:04:39,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:04:39,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:04:39,854 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:39,878 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2023-11-29 00:04:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:04:39,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 00:04:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:39,880 INFO L225 Difference]: With dead ends: 50 [2023-11-29 00:04:39,880 INFO L226 Difference]: Without dead ends: 31 [2023-11-29 00:04:39,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:04:39,883 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:39,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 77 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:04:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-29 00:04:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-11-29 00:04:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2023-11-29 00:04:39,889 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 42 transitions. Word has length 16 [2023-11-29 00:04:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:39,889 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 42 transitions. [2023-11-29 00:04:39,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2023-11-29 00:04:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:04:39,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:39,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:04:39,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:39,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -742254020, now seen corresponding path program 1 times [2023-11-29 00:04:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599297207] [2023-11-29 00:04:39,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:39,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:40,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:40,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599297207] [2023-11-29 00:04:40,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599297207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:40,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:40,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:04:40,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881182490] [2023-11-29 00:04:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:40,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:04:40,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:40,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:04:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:04:40,056 INFO L87 Difference]: Start difference. First operand 30 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:40,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:40,085 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2023-11-29 00:04:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:04:40,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 00:04:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:40,086 INFO L225 Difference]: With dead ends: 51 [2023-11-29 00:04:40,086 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 00:04:40,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:04:40,088 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 42 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:40,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 45 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:04:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 00:04:40,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-11-29 00:04:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-11-29 00:04:40,093 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2023-11-29 00:04:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:40,094 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-11-29 00:04:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-11-29 00:04:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:04:40,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:40,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:40,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:04:40,095 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:40,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:40,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1032753342, now seen corresponding path program 1 times [2023-11-29 00:04:40,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:40,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293650473] [2023-11-29 00:04:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:40,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:04:40,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:04:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:04:40,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:04:40,177 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:04:40,178 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:04:40,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:04:40,183 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 00:04:40,186 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:04:40,203 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-29 00:04:40,204 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 00:04:40,205 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-29 00:04:40,206 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-29 00:04:40,207 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 00:04:40,208 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-29 00:04:40,209 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-29 00:04:40,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:04:40 BoogieIcfgContainer [2023-11-29 00:04:40,217 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:04:40,218 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:04:40,218 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:04:40,218 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:04:40,219 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:38" (3/4) ... [2023-11-29 00:04:40,221 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 00:04:40,222 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:04:40,223 INFO L158 Benchmark]: Toolchain (without parser) took 2235.75ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 138.4MB in the beginning and 113.0MB in the end (delta: 25.4MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2023-11-29 00:04:40,223 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 119.5MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:04:40,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.00ms. Allocated memory is still 169.9MB. Free memory was 138.2MB in the beginning and 130.9MB in the end (delta: 7.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2023-11-29 00:04:40,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.26ms. Allocated memory is still 169.9MB. Free memory was 130.9MB in the beginning and 127.5MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:04:40,224 INFO L158 Benchmark]: Boogie Preprocessor took 49.30ms. Allocated memory is still 169.9MB. Free memory was 127.5MB in the beginning and 125.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:04:40,224 INFO L158 Benchmark]: RCFGBuilder took 445.32ms. Allocated memory is still 169.9MB. Free memory was 124.6MB in the beginning and 126.6MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 00:04:40,225 INFO L158 Benchmark]: TraceAbstraction took 1419.96ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 125.7MB in the beginning and 113.0MB in the end (delta: 12.7MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2023-11-29 00:04:40,225 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 205.5MB. Free memory is still 113.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:04:40,227 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 119.5MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.00ms. Allocated memory is still 169.9MB. Free memory was 138.2MB in the beginning and 130.9MB in the end (delta: 7.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.26ms. Allocated memory is still 169.9MB. Free memory was 130.9MB in the beginning and 127.5MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.30ms. Allocated memory is still 169.9MB. Free memory was 127.5MB in the beginning and 125.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 445.32ms. Allocated memory is still 169.9MB. Free memory was 124.6MB in the beginning and 126.6MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1419.96ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 125.7MB in the beginning and 113.0MB in the end (delta: 12.7MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 205.5MB. Free memory is still 113.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: 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 60. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L30] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L32] const SORT_1 var_4 = 1; [L33] const SORT_7 var_9 = 1; [L34] const SORT_1 var_17 = 0; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L39] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, var_17=0, var_4=1, var_9=1] [L39] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 init_6_arg_1 = var_4; [L42] state_5 = init_6_arg_1 VAL [init_6_arg_1=1, mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, state_5=1, var_17=0, var_4=1, var_9=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_3 = __VERIFIER_nondet_uchar() [L47] EXPR input_3 & mask_SORT_1 VAL [init_6_arg_1=1, input_3=0, mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, state_5=1, var_17=0, var_4=1, var_9=1] [L47] input_3 = input_3 & mask_SORT_1 [L50] SORT_1 var_8_arg_0 = state_5; VAL [init_6_arg_1=1, input_3=0, mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, state_5=1, var_17=0, var_4=1, var_8_arg_0=1, var_9=1] [L51] EXPR var_8_arg_0 & mask_SORT_1 VAL [init_6_arg_1=1, input_3=0, mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, state_5=1, var_17=0, var_4=1, var_8_arg_0=1, var_9=1] [L51] var_8_arg_0 = var_8_arg_0 & mask_SORT_1 [L52] SORT_7 var_8 = var_8_arg_0; [L53] SORT_7 var_10_arg_0 = var_8; [L54] SORT_7 var_10_arg_1 = var_9; [L55] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L56] SORT_1 var_13_arg_0 = var_10; [L57] SORT_1 var_13 = ~var_13_arg_0; [L58] SORT_1 var_14_arg_0 = var_4; [L59] SORT_1 var_14_arg_1 = var_13; VAL [init_6_arg_1=1, input_3=0, mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, state_5=1, var_10=1, var_10_arg_0=1, var_10_arg_1=1, var_13=254, var_13_arg_0=1, var_14_arg_0=1, var_14_arg_1=254, var_17=0, var_4=1, var_8=1, var_8_arg_0=1, var_9=1] [L60] EXPR var_14_arg_0 & var_14_arg_1 VAL [init_6_arg_1=1, input_3=0, mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, state_5=1, var_10=1, var_10_arg_0=1, var_10_arg_1=1, var_13=254, var_13_arg_0=1, var_14_arg_0=1, var_14_arg_1=254, var_17=0, var_4=1, var_8=1, var_8_arg_0=1, var_9=1] [L60] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L61] EXPR var_14 & mask_SORT_1 VAL [init_6_arg_1=1, input_3=0, mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, state_5=1, var_10=1, var_10_arg_0=1, var_10_arg_1=1, var_13=254, var_13_arg_0=1, var_14=1, var_14_arg_0=1, var_14_arg_1=254, var_17=0, var_4=1, var_8=1, var_8_arg_0=1, var_9=1] [L61] var_14 = var_14 & mask_SORT_1 [L62] SORT_1 bad_15_arg_0 = var_14; [L63] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 175 mSDsluCounter, 279 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 168 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 111 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 143 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 00:04:40,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 63b2465af3382507505d15dae126c5fc4c2a382acf5f7b83ac8e7391dc7cb34e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:04:42,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:04:42,212 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-29 00:04:42,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:04:42,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:04:42,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:04:42,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:04:42,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:04:42,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:04:42,255 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:04:42,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:04:42,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:04:42,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:04:42,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:04:42,258 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:04:42,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:04:42,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:04:42,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:04:42,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:04:42,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:04:42,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:04:42,262 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:04:42,263 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:04:42,263 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:04:42,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:04:42,264 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:04:42,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:04:42,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:04:42,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:04:42,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:04:42,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:04:42,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:04:42,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:04:42,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:04:42,267 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:04:42,268 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:04:42,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:04:42,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:04:42,268 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:04:42,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:04:42,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:04:42,269 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:04:42,269 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_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63b2465af3382507505d15dae126c5fc4c2a382acf5f7b83ac8e7391dc7cb34e [2023-11-29 00:04:42,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:04:42,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:04:42,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:04:42,570 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:04:42,570 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:04:42,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c [2023-11-29 00:04:45,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:04:45,602 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:04:45,603 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c [2023-11-29 00:04:45,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/data/7085e5e70/d58ec5f5342943a3bea82d95076e503c/FLAG2fdf38f6b [2023-11-29 00:04:45,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/data/7085e5e70/d58ec5f5342943a3bea82d95076e503c [2023-11-29 00:04:45,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:04:45,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:04:45,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:04:45,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:04:45,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:04:45,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ecb9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45, skipping insertion in model container [2023-11-29 00:04:45,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:04:45,815 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c[1245,1258] [2023-11-29 00:04:45,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:04:45,856 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:04:45,871 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c[1245,1258] [2023-11-29 00:04:45,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:04:45,898 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:04:45,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45 WrapperNode [2023-11-29 00:04:45,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:04:45,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:04:45,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:04:45,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:04:45,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,939 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2023-11-29 00:04:45,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:04:45,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:04:45,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:04:45,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:04:45,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,955 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,968 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-29 00:04:45,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:04:45,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:04:45,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:04:45,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:04:45,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (1/1) ... [2023-11-29 00:04:45,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:04:46,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:46,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:04:46,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:04:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:04:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:04:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:04:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:04:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:04:46,149 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:04:46,151 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:04:46,296 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:04:46,330 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:04:46,330 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:04:46,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:46 BoogieIcfgContainer [2023-11-29 00:04:46,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:04:46,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:04:46,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:04:46,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:04:46,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:04:45" (1/3) ... [2023-11-29 00:04:46,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@901b76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:04:46, skipping insertion in model container [2023-11-29 00:04:46,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:45" (2/3) ... [2023-11-29 00:04:46,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@901b76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:04:46, skipping insertion in model container [2023-11-29 00:04:46,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:46" (3/3) ... [2023-11-29 00:04:46,340 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bug-1.c [2023-11-29 00:04:46,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:04:46,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:04:46,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:04:46,411 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76382adf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:04:46,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:04:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:04:46,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:46,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:04:46,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:46,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-29 00:04:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:04:46,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954164717] [2023-11-29 00:04:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:46,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:04:46,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:04:46,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:04:46,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:04:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:46,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:04:46,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:46,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:04:46,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:04:46,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954164717] [2023-11-29 00:04:46,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954164717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:46,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:46,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:04:46,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335339241] [2023-11-29 00:04:46,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:46,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:04:46,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:04:46,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:04:46,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:04:46,789 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:46,841 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-29 00:04:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:04:46,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 00:04:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:46,849 INFO L225 Difference]: With dead ends: 16 [2023-11-29 00:04:46,849 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 00:04:46,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:04:46,854 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:46,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:04:46,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 00:04:46,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-29 00:04:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-29 00:04:46,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-29 00:04:46,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:46,878 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-29 00:04:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-29 00:04:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:04:46,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:46,879 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 00:04:46,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:04:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:04:47,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:47,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-29 00:04:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:04:47,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838594466] [2023-11-29 00:04:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:47,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:04:47,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:04:47,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:04:47,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:04:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:47,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:04:47,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:47,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:04:48,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:04:48,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838594466] [2023-11-29 00:04:48,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838594466] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:04:48,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:04:48,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 00:04:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641976880] [2023-11-29 00:04:48,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:04:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:04:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:04:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:04:48,034 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:48,066 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2023-11-29 00:04:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:04:48,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 00:04:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:48,068 INFO L225 Difference]: With dead ends: 8 [2023-11-29 00:04:48,068 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 00:04:48,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:04:48,070 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:48,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:04:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 00:04:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 00:04:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 00:04:48,072 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2023-11-29 00:04:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:48,072 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 00:04:48,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:04:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 00:04:48,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 00:04:48,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:04:48,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:04:48,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:04:48,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 00:04:48,293 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 00:04:48,293 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-29 00:04:48,293 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-29 00:04:48,293 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-29 00:04:48,293 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 00:04:48,293 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-29 00:04:48,294 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 43 76) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~state_5~0#1|) (= |ULTIMATE.start_main_~var_17~0#1| (_ bv0 8)) (= (_ bv1 8) |ULTIMATE.start_main_~var_4~0#1|) (= |ULTIMATE.start_main_~var_9~0#1| (_ bv1 32))) [2023-11-29 00:04:48,294 INFO L899 garLoopResultBuilder]: For program point L43-3(lines 43 76) no Hoare annotation was computed. [2023-11-29 00:04:48,297 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 00:04:48,299 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:04:48,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:04:48 BoogieIcfgContainer [2023-11-29 00:04:48,308 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:04:48,309 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:04:48,309 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:04:48,309 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:04:48,310 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:46" (3/4) ... [2023-11-29 00:04:48,312 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:04:48,319 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-29 00:04:48,320 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 00:04:48,320 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 00:04:48,320 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:04:48,320 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:04:48,410 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:04:48,411 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:04:48,411 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:04:48,412 INFO L158 Benchmark]: Toolchain (without parser) took 2780.77ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 73.0MB in the beginning and 52.7MB in the end (delta: 20.3MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2023-11-29 00:04:48,412 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:04:48,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.36ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 61.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:04:48,413 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.57ms. Allocated memory is still 96.5MB. Free memory was 60.9MB in the beginning and 59.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:04:48,413 INFO L158 Benchmark]: Boogie Preprocessor took 44.14ms. Allocated memory is still 96.5MB. Free memory was 59.2MB in the beginning and 57.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:04:48,413 INFO L158 Benchmark]: RCFGBuilder took 345.23ms. Allocated memory is still 96.5MB. Free memory was 57.2MB in the beginning and 67.2MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 00:04:48,414 INFO L158 Benchmark]: TraceAbstraction took 1975.34ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 66.5MB in the beginning and 58.1MB in the end (delta: 8.5MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-11-29 00:04:48,414 INFO L158 Benchmark]: Witness Printer took 101.76ms. Allocated memory is still 117.4MB. Free memory was 57.8MB in the beginning and 52.7MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 00:04:48,416 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.36ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 61.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.57ms. Allocated memory is still 96.5MB. Free memory was 60.9MB in the beginning and 59.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.14ms. Allocated memory is still 96.5MB. Free memory was 59.2MB in the beginning and 57.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 345.23ms. Allocated memory is still 96.5MB. Free memory was 57.2MB in the beginning and 67.2MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1975.34ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 66.5MB in the beginning and 58.1MB in the end (delta: 8.5MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * Witness Printer took 101.76ms. Allocated memory is still 117.4MB. Free memory was 57.8MB in the beginning and 52.7MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 4 QuantifiedInterpolants, 807 SizeOfPredicates, 43 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: (((((1 == mask_SORT_1) && (1 == state_5)) && (var_17 == 0)) && (1 == var_4)) && (var_9 == 1)) RESULT: Ultimate proved your program to be correct! [2023-11-29 00:04:48,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462cde96-e94d-4a66-a725-3842b0c63540/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE