./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU --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 5d158962260c30d804a065123fd6610d4547bfb1f0024709f9d294e632350d48 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:13:31,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:13:31,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-31 22:13:31,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:13:31,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:13:31,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:13:31,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:13:31,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:13:31,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:13:31,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:13:31,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:13:31,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:13:31,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:13:31,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:13:31,863 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:13:31,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:13:31,864 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:13:31,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:13:31,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:13:31,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:13:31,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:13:31,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:13:31,866 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:13:31,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:13:31,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:13:31,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:13:31,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:13:31,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:13:31,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:13:31,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:31,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:13:31,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:13:31,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:13:31,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:13:31,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:13:31,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:13:31,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:13:31,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:13:31,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:13:31,873 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_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d158962260c30d804a065123fd6610d4547bfb1f0024709f9d294e632350d48 [2024-10-31 22:13:32,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:13:32,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:13:32,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:13:32,246 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:13:32,246 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:13:32,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c Unable to find full path for "g++" [2024-10-31 22:13:34,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:13:34,561 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:13:34,562 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2024-10-31 22:13:34,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/data/d78a66a58/aff650bd537f43f2a9767bc0f0d491bb/FLAGc548d180c [2024-10-31 22:13:34,903 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/data/d78a66a58/aff650bd537f43f2a9767bc0f0d491bb [2024-10-31 22:13:34,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:13:34,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:13:34,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:34,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:13:34,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:13:34,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:34" (1/1) ... [2024-10-31 22:13:34,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29cccc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:34, skipping insertion in model container [2024-10-31 22:13:34,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:34" (1/1) ... [2024-10-31 22:13:34,942 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:13:35,115 WARN L251 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_53db4bde-4b71-48b4-bd75-0fe2348a5d99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1246,1259] [2024-10-31 22:13:35,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:35,176 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:13:35,185 WARN L251 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_53db4bde-4b71-48b4-bd75-0fe2348a5d99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1246,1259] [2024-10-31 22:13:35,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:35,230 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:13:35,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35 WrapperNode [2024-10-31 22:13:35,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:35,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:35,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:13:35,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:13:35,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,303 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 219 [2024-10-31 22:13:35,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:35,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:13:35,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:13:35,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:13:35,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,335 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,359 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:13:35,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:13:35,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:13:35,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:13:35,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:13:35,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (1/1) ... [2024-10-31 22:13:35,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:35,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:13:35,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:13:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:13:35,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:13:35,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:13:35,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:13:35,601 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:13:35,604 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:13:36,195 INFO L? ?]: Removed 100 outVars from TransFormulas that were not future-live. [2024-10-31 22:13:36,195 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:13:36,217 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:13:36,221 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:13:36,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:36 BoogieIcfgContainer [2024-10-31 22:13:36,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:13:36,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:13:36,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:13:36,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:13:36,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:34" (1/3) ... [2024-10-31 22:13:36,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3723d2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:36, skipping insertion in model container [2024-10-31 22:13:36,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:35" (2/3) ... [2024-10-31 22:13:36,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3723d2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:36, skipping insertion in model container [2024-10-31 22:13:36,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:36" (3/3) ... [2024-10-31 22:13:36,236 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs.c [2024-10-31 22:13:36,256 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:13:36,257 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:13:36,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:13:36,326 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28727d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:13:36,327 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:13:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-31 22:13:36,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:36,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:36,340 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:36,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash 75690447, now seen corresponding path program 1 times [2024-10-31 22:13:36,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:36,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858110788] [2024-10-31 22:13:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:36,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:36,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858110788] [2024-10-31 22:13:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858110788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:36,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:36,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701138781] [2024-10-31 22:13:36,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:37,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:37,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:37,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:37,024 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:37,071 INFO L93 Difference]: Finished difference Result 97 states and 141 transitions. [2024-10-31 22:13:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:13:37,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-31 22:13:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:37,085 INFO L225 Difference]: With dead ends: 97 [2024-10-31 22:13:37,085 INFO L226 Difference]: Without dead ends: 57 [2024-10-31 22:13:37,087 INFO L431 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 [2024-10-31 22:13:37,090 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 225 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 [2024-10-31 22:13:37,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:13:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-31 22:13:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-31 22:13:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 56 states have internal predecessors, (81), 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) [2024-10-31 22:13:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 81 transitions. [2024-10-31 22:13:37,129 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 81 transitions. Word has length 19 [2024-10-31 22:13:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:37,129 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 81 transitions. [2024-10-31 22:13:37,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-10-31 22:13:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 81 transitions. [2024-10-31 22:13:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-31 22:13:37,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:37,131 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:37,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:13:37,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:37,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1946868195, now seen corresponding path program 1 times [2024-10-31 22:13:37,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:37,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929274560] [2024-10-31 22:13:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:37,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:37,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929274560] [2024-10-31 22:13:37,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929274560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:37,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908502612] [2024-10-31 22:13:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:37,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:37,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:37,308 INFO L87 Difference]: Start difference. First operand 57 states and 81 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-10-31 22:13:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:37,358 INFO L93 Difference]: Finished difference Result 98 states and 139 transitions. [2024-10-31 22:13:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:13:37,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2024-10-31 22:13:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:37,361 INFO L225 Difference]: With dead ends: 98 [2024-10-31 22:13:37,362 INFO L226 Difference]: Without dead ends: 59 [2024-10-31 22:13:37,363 INFO L431 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 [2024-10-31 22:13:37,364 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:37,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:13:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-31 22:13:37,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-31 22:13:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 58 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 83 transitions. [2024-10-31 22:13:37,374 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 83 transitions. Word has length 20 [2024-10-31 22:13:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:37,375 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 83 transitions. [2024-10-31 22:13:37,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-10-31 22:13:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 83 transitions. [2024-10-31 22:13:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-31 22:13:37,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:37,376 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:37,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:13:37,377 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:37,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1321337752, now seen corresponding path program 1 times [2024-10-31 22:13:37,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:37,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900114330] [2024-10-31 22:13:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:37,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:37,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900114330] [2024-10-31 22:13:37,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900114330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:37,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:37,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228649723] [2024-10-31 22:13:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:37,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:37,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:37,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:37,696 INFO L87 Difference]: Start difference. First operand 59 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:37,811 INFO L93 Difference]: Finished difference Result 100 states and 140 transitions. [2024-10-31 22:13:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:13:37,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-31 22:13:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:37,813 INFO L225 Difference]: With dead ends: 100 [2024-10-31 22:13:37,813 INFO L226 Difference]: Without dead ends: 59 [2024-10-31 22:13:37,814 INFO L431 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 [2024-10-31 22:13:37,816 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 69 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:37,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 103 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-31 22:13:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-31 22:13:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 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) [2024-10-31 22:13:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2024-10-31 22:13:37,829 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 21 [2024-10-31 22:13:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:37,830 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2024-10-31 22:13:37,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2024-10-31 22:13:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-31 22:13:37,831 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:37,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:37,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:13:37,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:37,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:37,834 INFO L85 PathProgramCache]: Analyzing trace with hash -65191099, now seen corresponding path program 1 times [2024-10-31 22:13:37,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:37,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283004359] [2024-10-31 22:13:37,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:37,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:13:37,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:13:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:13:37,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:13:37,970 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:13:37,971 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 22:13:37,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:13:37,979 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 22:13:38,023 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:13:38,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:13:38 BoogieIcfgContainer [2024-10-31 22:13:38,027 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:13:38,027 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:13:38,028 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:13:38,028 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:13:38,031 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:36" (3/4) ... [2024-10-31 22:13:38,035 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:13:38,036 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:13:38,037 INFO L158 Benchmark]: Toolchain (without parser) took 3128.55ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 128.4MB in the beginning and 132.3MB in the end (delta: -3.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2024-10-31 22:13:38,037 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:13:38,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.50ms. Allocated memory is still 157.3MB. Free memory was 128.2MB in the beginning and 112.8MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-31 22:13:38,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.94ms. Allocated memory is still 157.3MB. Free memory was 112.8MB in the beginning and 107.3MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:13:38,038 INFO L158 Benchmark]: Boogie Preprocessor took 102.36ms. Allocated memory is still 157.3MB. Free memory was 107.3MB in the beginning and 103.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:13:38,039 INFO L158 Benchmark]: RCFGBuilder took 814.47ms. Allocated memory is still 157.3MB. Free memory was 103.8MB in the beginning and 72.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-31 22:13:38,039 INFO L158 Benchmark]: TraceAbstraction took 1801.38ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 71.7MB in the beginning and 133.3MB in the end (delta: -61.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:13:38,040 INFO L158 Benchmark]: Witness Printer took 8.87ms. Allocated memory is still 192.9MB. Free memory was 133.3MB in the beginning and 132.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:13:38,044 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.50ms. Allocated memory is still 157.3MB. Free memory was 128.2MB in the beginning and 112.8MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.94ms. Allocated memory is still 157.3MB. Free memory was 112.8MB in the beginning and 107.3MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.36ms. Allocated memory is still 157.3MB. Free memory was 107.3MB in the beginning and 103.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 814.47ms. Allocated memory is still 157.3MB. Free memory was 103.8MB in the beginning and 72.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1801.38ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 71.7MB in the beginning and 133.3MB in the end (delta: -61.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.87ms. Allocated memory is still 192.9MB. Free memory was 133.3MB in the beginning and 132.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 68. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 5); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (5 - 1); [L32] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 4); [L33] const SORT_8 msb_SORT_8 = (SORT_8)1 << (4 - 1); [L35] const SORT_4 var_5 = 1; [L36] const SORT_8 var_9 = 2; [L37] const SORT_1 var_15 = 1; [L38] const SORT_4 var_19 = 5; [L39] const SORT_4 var_22 = 7; [L40] const SORT_4 var_26 = 11; [L41] const SORT_4 var_29 = 3; [L42] const SORT_8 var_30 = 1; [L43] const SORT_8 var_37 = 5; [L45] SORT_1 input_2; [L46] SORT_1 input_3; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L48] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L49] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L49] SORT_4 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L50] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L50] SORT_4 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L51] SORT_4 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L53] SORT_4 init_7_arg_1 = var_5; [L54] state_6 = init_7_arg_1 [L55] SORT_4 init_21_arg_1 = var_19; [L56] state_20 = init_21_arg_1 [L57] SORT_4 init_24_arg_1 = var_22; [L58] state_23 = init_24_arg_1 [L59] SORT_4 init_28_arg_1 = var_26; [L60] state_27 = init_28_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, state_20=5, state_23=7, state_27=11, state_6=1, var_15=1, var_19=5, var_22=7, var_29=3, var_30=1, var_37=5, var_9=2] [L63] input_2 = __VERIFIER_nondet_uchar() [L64] input_3 = __VERIFIER_nondet_uchar() [L67] SORT_8 var_10_arg_0 = var_9; VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, state_20=5, state_23=7, state_27=11, state_6=1, var_10_arg_0=2, var_15=1, var_19=5, var_22=7, var_29=3, var_30=1, var_37=5, var_9=2] [L68] EXPR var_10_arg_0 & mask_SORT_8 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, state_20=5, state_23=7, state_27=11, state_6=1, var_15=1, var_19=5, var_22=7, var_29=3, var_30=1, var_37=5, var_9=2] [L68] var_10_arg_0 = var_10_arg_0 & mask_SORT_8 [L69] SORT_4 var_10 = var_10_arg_0; [L70] SORT_4 var_11_arg_0 = state_6; [L71] SORT_4 var_11_arg_1 = var_10; [L72] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L73] SORT_1 var_12_arg_0 = var_11; [L74] SORT_1 var_12 = ~var_12_arg_0; [L75] SORT_1 var_16_arg_0 = var_12; [L76] SORT_1 var_16 = ~var_16_arg_0; [L77] SORT_1 var_17_arg_0 = var_15; [L78] SORT_1 var_17_arg_1 = var_16; VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, state_20=5, state_23=7, state_27=11, state_6=1, var_15=1, var_17_arg_0=1, var_17_arg_1=-255, var_19=5, var_22=7, var_29=3, var_30=1, var_37=5, var_9=2] [L79] EXPR var_17_arg_0 & var_17_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, state_20=5, state_23=7, state_27=11, state_6=1, var_15=1, var_19=5, var_22=7, var_29=3, var_30=1, var_37=5, var_9=2] [L79] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L80] EXPR var_17 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, state_20=5, state_23=7, state_27=11, state_6=1, var_15=1, var_19=5, var_22=7, var_29=3, var_30=1, var_37=5, var_9=2] [L80] var_17 = var_17 & mask_SORT_1 [L81] SORT_1 bad_18_arg_0 = var_17; [L82] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 549 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 343 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 206 mSDtfsCounter, 75 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 176 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 [2024-10-31 22:13:38,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU --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 5d158962260c30d804a065123fd6610d4547bfb1f0024709f9d294e632350d48 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:13:40,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:13:40,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-10-31 22:13:40,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:13:40,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:13:40,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:13:40,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:13:40,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:13:40,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:13:40,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:13:40,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:13:40,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:13:40,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:13:40,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:13:40,898 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:13:40,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:13:40,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:13:40,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:13:40,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:13:40,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:13:40,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:13:40,906 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:13:40,906 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 22:13:40,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:13:40,907 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 22:13:40,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:13:40,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:13:40,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:13:40,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:13:40,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:13:40,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:13:40,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:40,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:13:40,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:13:40,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:13:40,911 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 22:13:40,912 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 22:13:40,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:13:40,913 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:13:40,913 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:13:40,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:13:40,914 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 22:13:40,914 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_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d158962260c30d804a065123fd6610d4547bfb1f0024709f9d294e632350d48 [2024-10-31 22:13:41,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:13:41,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:13:41,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:13:41,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:13:41,369 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:13:41,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c Unable to find full path for "g++" [2024-10-31 22:13:43,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:13:43,865 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:13:43,866 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2024-10-31 22:13:43,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/data/a29485f12/17b9582e7ca546aeba8d18005dbdfae0/FLAG291842514 [2024-10-31 22:13:43,897 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/data/a29485f12/17b9582e7ca546aeba8d18005dbdfae0 [2024-10-31 22:13:43,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:13:43,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:13:43,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:43,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:13:43,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:13:43,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:43" (1/1) ... [2024-10-31 22:13:43,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12913059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:43, skipping insertion in model container [2024-10-31 22:13:43,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:43" (1/1) ... [2024-10-31 22:13:43,942 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:13:44,175 WARN L251 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_53db4bde-4b71-48b4-bd75-0fe2348a5d99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1246,1259] [2024-10-31 22:13:44,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:44,293 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:13:44,310 WARN L251 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_53db4bde-4b71-48b4-bd75-0fe2348a5d99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1246,1259] [2024-10-31 22:13:44,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:44,376 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:13:44,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44 WrapperNode [2024-10-31 22:13:44,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:44,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:44,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:13:44,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:13:44,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,442 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2024-10-31 22:13:44,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:44,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:13:44,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:13:44,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:13:44,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,520 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:13:44,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:13:44,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:13:44,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:13:44,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:13:44,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (1/1) ... [2024-10-31 22:13:44,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:44,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:13:44,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:13:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:13:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 22:13:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:13:44,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:13:44,822 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:13:44,824 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:13:45,049 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-10-31 22:13:45,050 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:13:45,064 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:13:45,065 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:13:45,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:45 BoogieIcfgContainer [2024-10-31 22:13:45,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:13:45,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:13:45,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:13:45,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:13:45,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:43" (1/3) ... [2024-10-31 22:13:45,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2d6d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:45, skipping insertion in model container [2024-10-31 22:13:45,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:44" (2/3) ... [2024-10-31 22:13:45,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2d6d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:45, skipping insertion in model container [2024-10-31 22:13:45,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:45" (3/3) ... [2024-10-31 22:13:45,079 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs.c [2024-10-31 22:13:45,105 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:13:45,105 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:13:45,191 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:13:45,199 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d4f94bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:13:45,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:13:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-31 22:13:45,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:45,226 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:13:45,227 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:45,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:45,247 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-10-31 22:13:45,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:13:45,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025253954] [2024-10-31 22:13:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:45,277 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 [2024-10-31 22:13:45,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:13:45,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:13:45,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:13:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:45,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-31 22:13:45,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:45,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:13:45,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:13:45,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025253954] [2024-10-31 22:13:45,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025253954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:45,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:45,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:45,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019192002] [2024-10-31 22:13:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:45,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:45,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:13:45,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:45,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:45,895 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-10-31 22:13:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:45,997 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-10-31 22:13:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:13:46,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-10-31 22:13:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:46,012 INFO L225 Difference]: With dead ends: 18 [2024-10-31 22:13:46,012 INFO L226 Difference]: Without dead ends: 10 [2024-10-31 22:13:46,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:13:46,023 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:46,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:13:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-10-31 22:13:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-10-31 22:13:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2024-10-31 22:13:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-10-31 22:13:46,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-10-31 22:13:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:46,066 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-10-31 22:13:46,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-10-31 22:13:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-10-31 22:13:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:13:46,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:46,067 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:46,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-31 22:13:46,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:13:46,270 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:46,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-10-31 22:13:46,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:13:46,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222882817] [2024-10-31 22:13:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:46,272 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 [2024-10-31 22:13:46,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:13:46,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:13:46,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:13:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:46,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-31 22:13:46,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:46,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:48,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:13:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222882817] [2024-10-31 22:13:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222882817] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:48,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:13:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-31 22:13:48,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064221039] [2024-10-31 22:13:48,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:48,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:13:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:13:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:13:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:13:48,580 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2024-10-31 22:13:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:48,847 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-10-31 22:13:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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 8 [2024-10-31 22:13:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:48,848 INFO L225 Difference]: With dead ends: 15 [2024-10-31 22:13:48,849 INFO L226 Difference]: Without dead ends: 13 [2024-10-31 22:13:48,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:13:48,851 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:48,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:48,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-31 22:13:48,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-10-31 22:13:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-10-31 22:13:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-10-31 22:13:48,865 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-10-31 22:13:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:48,866 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-10-31 22:13:48,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2024-10-31 22:13:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-10-31 22:13:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 22:13:48,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:48,872 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-10-31 22:13:48,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:13:49,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:13:49,073 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:49,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:49,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-10-31 22:13:49,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:13:49,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868714211] [2024-10-31 22:13:49,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:13:49,075 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 [2024-10-31 22:13:49,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:13:49,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:13:49,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-31 22:13:49,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:13:49,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:49,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-31 22:13:49,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:49,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:51,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:13:51,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868714211] [2024-10-31 22:13:51,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868714211] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:51,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:13:51,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-31 22:13:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739960234] [2024-10-31 22:13:51,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:51,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:13:51,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:13:51,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:13:51,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:13:51,734 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2024-10-31 22:13:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:51,927 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2024-10-31 22:13:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:51,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-31 22:13:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:51,929 INFO L225 Difference]: With dead ends: 18 [2024-10-31 22:13:51,929 INFO L226 Difference]: Without dead ends: 16 [2024-10-31 22:13:51,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:13:51,931 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:51,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-31 22:13:51,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-10-31 22:13:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 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) [2024-10-31 22:13:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-10-31 22:13:51,942 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2024-10-31 22:13:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:51,943 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-10-31 22:13:51,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2024-10-31 22:13:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-10-31 22:13:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-31 22:13:51,945 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:51,945 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-10-31 22:13:51,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-31 22:13:52,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:13:52,146 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:52,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 3 times [2024-10-31 22:13:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:13:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971941273] [2024-10-31 22:13:52,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:13:52,154 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 [2024-10-31 22:13:52,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:13:52,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:13:52,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-31 22:13:52,352 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-31 22:13:52,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:52,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-31 22:13:52,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:53,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:54,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:13:54,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971941273] [2024-10-31 22:13:54,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971941273] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:54,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:13:54,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-10-31 22:13:54,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753339967] [2024-10-31 22:13:54,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:54,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:13:54,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:13:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:13:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:13:54,880 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:55,196 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2024-10-31 22:13:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:13:55,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-31 22:13:55,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:55,198 INFO L225 Difference]: With dead ends: 21 [2024-10-31 22:13:55,198 INFO L226 Difference]: Without dead ends: 19 [2024-10-31 22:13:55,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:13:55,199 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:55,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 27 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-31 22:13:55,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-10-31 22:13:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2024-10-31 22:13:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-10-31 22:13:55,205 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2024-10-31 22:13:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:55,205 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-10-31 22:13:55,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-10-31 22:13:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-31 22:13:55,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:55,206 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-10-31 22:13:55,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-31 22:13:55,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:13:55,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:13:55,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 4 times [2024-10-31 22:13:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:13:55,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388035423] [2024-10-31 22:13:55,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:13:55,409 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 [2024-10-31 22:13:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:13:55,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:13:55,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-31 22:13:55,545 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:13:55,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:55,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-31 22:13:55,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:56,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:59,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:13:59,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388035423] [2024-10-31 22:13:59,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388035423] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:59,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:13:59,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-10-31 22:13:59,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313382101] [2024-10-31 22:13:59,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:59,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:13:59,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:13:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:13:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:13:59,998 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-10-31 22:14:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:02,630 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-10-31 22:14:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-31 22:14:02,631 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 [2024-10-31 22:14:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:02,631 INFO L225 Difference]: With dead ends: 36 [2024-10-31 22:14:02,632 INFO L226 Difference]: Without dead ends: 34 [2024-10-31 22:14:02,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2024-10-31 22:14:02,636 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:02,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 26 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:14:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-31 22:14:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-10-31 22:14:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 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) [2024-10-31 22:14:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2024-10-31 22:14:02,651 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 17 [2024-10-31 22:14:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:02,654 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2024-10-31 22:14:02,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-10-31 22:14:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2024-10-31 22:14:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-31 22:14:02,655 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:02,655 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1] [2024-10-31 22:14:02,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:02,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:14:02,856 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:02,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1946645219, now seen corresponding path program 5 times [2024-10-31 22:14:02,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:14:02,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117068268] [2024-10-31 22:14:02,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:14:02,858 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 [2024-10-31 22:14:02,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:14:02,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:14:02,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53db4bde-4b71-48b4-bd75-0fe2348a5d99/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-31 22:14:03,070 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-10-31 22:14:03,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:14:03,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-31 22:14:03,083 INFO L278 TraceCheckSpWp]: Computing forward predicates...