./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 418a605fc1323c67278586b967efb51b918569726e40c2a0630b64c1083a6ff9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:23:58,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:23:58,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:23:58,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:23:58,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:23:58,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:23:58,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:23:58,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:23:58,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:23:58,321 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:23:58,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:23:58,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:23:58,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:23:58,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:23:58,327 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:23:58,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:23:58,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:23:58,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:23:58,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:23:58,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:23:58,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:23:58,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:23:58,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:23:58,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:23:58,333 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:23:58,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:23:58,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:23:58,334 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:23:58,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:23:58,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:23:58,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:23:58,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:23:58,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:23:58,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:23:58,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:23:58,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:23:58,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:23:58,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:23:58,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:23:58,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:23:58,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:23:58,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:23:58,340 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_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 418a605fc1323c67278586b967efb51b918569726e40c2a0630b64c1083a6ff9 [2024-11-08 18:23:58,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:23:58,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:23:58,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:23:58,679 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:23:58,680 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:23:58,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i Unable to find full path for "g++" [2024-11-08 18:24:00,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:24:00,870 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:24:00,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i [2024-11-08 18:24:00,878 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/data/b249943ee/313c00fbfd3341a7a7da96d23b0224eb/FLAG24789cccb [2024-11-08 18:24:00,892 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/data/b249943ee/313c00fbfd3341a7a7da96d23b0224eb [2024-11-08 18:24:00,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:24:00,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:24:00,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:24:00,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:24:00,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:24:00,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:24:00" (1/1) ... [2024-11-08 18:24:00,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7d482d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:00, skipping insertion in model container [2024-11-08 18:24:00,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:24:00" (1/1) ... [2024-11-08 18:24:00,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:24:01,169 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i[819,832] [2024-11-08 18:24:01,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:24:01,204 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:24:01,215 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i[819,832] [2024-11-08 18:24:01,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:24:01,249 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:24:01,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01 WrapperNode [2024-11-08 18:24:01,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:24:01,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:24:01,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:24:01,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:24:01,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,288 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-11-08 18:24:01,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:24:01,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:24:01,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:24:01,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:24:01,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,330 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 18:24:01,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:24:01,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:24:01,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:24:01,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:24:01,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (1/1) ... [2024-11-08 18:24:01,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:24:01,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:01,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:24:01,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:24:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:24:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:24:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:24:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:24:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:24:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:24:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:24:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:24:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:24:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:24:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:24:01,527 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:24:01,529 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:24:01,668 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-08 18:24:01,668 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:24:01,680 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:24:01,680 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:24:01,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:24:01 BoogieIcfgContainer [2024-11-08 18:24:01,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:24:01,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:24:01,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:24:01,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:24:01,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:24:00" (1/3) ... [2024-11-08 18:24:01,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0e2d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:24:01, skipping insertion in model container [2024-11-08 18:24:01,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:24:01" (2/3) ... [2024-11-08 18:24:01,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0e2d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:24:01, skipping insertion in model container [2024-11-08 18:24:01,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:24:01" (3/3) ... [2024-11-08 18:24:01,690 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2024-11-08 18:24:01,708 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:24:01,708 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:24:01,777 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:24:01,784 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;@1ec974da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:24:01,784 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:24:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 18:24:01,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:01,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:01,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:01,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:01,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1470749070, now seen corresponding path program 1 times [2024-11-08 18:24:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008599447] [2024-11-08 18:24:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:01,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:02,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:02,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008599447] [2024-11-08 18:24:02,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008599447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:24:02,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:24:02,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:24:02,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842794692] [2024-11-08 18:24:02,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:24:02,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:24:02,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:24:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:24:02,069 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:02,109 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2024-11-08 18:24:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:24:02,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-08 18:24:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:02,120 INFO L225 Difference]: With dead ends: 38 [2024-11-08 18:24:02,120 INFO L226 Difference]: Without dead ends: 18 [2024-11-08 18:24:02,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:24:02,127 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:02,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:24:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-08 18:24:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-08 18:24:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2024-11-08 18:24:02,162 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2024-11-08 18:24:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:02,162 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2024-11-08 18:24:02,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2024-11-08 18:24:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 18:24:02,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:02,164 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:02,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:24:02,165 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:02,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash -885907309, now seen corresponding path program 1 times [2024-11-08 18:24:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655350849] [2024-11-08 18:24:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:02,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655350849] [2024-11-08 18:24:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655350849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401495888] [2024-11-08 18:24:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:02,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:02,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:02,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:02,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:24:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:02,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 18:24:02,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:24:02,416 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:24:02,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401495888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:24:02,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:24:02,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 18:24:02,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698014047] [2024-11-08 18:24:02,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:24:02,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:24:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:24:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:24:02,421 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-11-08 18:24:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:02,454 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2024-11-08 18:24:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:24:02,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Word has length 12 [2024-11-08 18:24:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:02,458 INFO L225 Difference]: With dead ends: 29 [2024-11-08 18:24:02,459 INFO L226 Difference]: Without dead ends: 22 [2024-11-08 18:24:02,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:24:02,460 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:02,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:24:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-08 18:24:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-08 18:24:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-08 18:24:02,472 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2024-11-08 18:24:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:02,472 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-08 18:24:02,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-11-08 18:24:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-08 18:24:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 18:24:02,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:02,476 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:02,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:24:02,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:02,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:02,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:02,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1265553756, now seen corresponding path program 1 times [2024-11-08 18:24:02,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:02,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841904705] [2024-11-08 18:24:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:02,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:24:02,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841904705] [2024-11-08 18:24:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841904705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208261794] [2024-11-08 18:24:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:02,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:02,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:02,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:24:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:02,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 18:24:03,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:24:03,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:24:03,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208261794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:03,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:03,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 18:24:03,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540197065] [2024-11-08 18:24:03,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:03,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:24:03,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:24:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:24:03,079 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:03,117 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2024-11-08 18:24:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:24:03,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-08 18:24:03,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:03,121 INFO L225 Difference]: With dead ends: 39 [2024-11-08 18:24:03,121 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 18:24:03,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:24:03,124 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:03,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:24:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 18:24:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-08 18:24:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2024-11-08 18:24:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-08 18:24:03,136 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2024-11-08 18:24:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:03,136 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-08 18:24:03,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-08 18:24:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 18:24:03,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:03,138 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:03,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:24:03,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-08 18:24:03,339 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:03,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:03,339 INFO L85 PathProgramCache]: Analyzing trace with hash 656373611, now seen corresponding path program 2 times [2024-11-08 18:24:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:03,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768780438] [2024-11-08 18:24:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:03,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:24:03,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:03,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768780438] [2024-11-08 18:24:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768780438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:03,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752284475] [2024-11-08 18:24:03,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:24:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:03,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:03,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:24:03,580 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:24:03,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:24:03,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:24:03,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:24:03,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:24:03,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752284475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:03,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:03,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 18:24:03,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502748608] [2024-11-08 18:24:03,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:03,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:24:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:24:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:24:03,782 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:03,892 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2024-11-08 18:24:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 18:24:03,893 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-08 18:24:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:03,894 INFO L225 Difference]: With dead ends: 57 [2024-11-08 18:24:03,894 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 18:24:03,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:24:03,896 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:03,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 78 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:24:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 18:24:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-08 18:24:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 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) [2024-11-08 18:24:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-11-08 18:24:03,903 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 22 [2024-11-08 18:24:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:03,904 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-11-08 18:24:03,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-11-08 18:24:03,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 18:24:03,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:03,906 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:03,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:24:04,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:04,107 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:04,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:04,107 INFO L85 PathProgramCache]: Analyzing trace with hash 289227666, now seen corresponding path program 3 times [2024-11-08 18:24:04,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:04,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218177419] [2024-11-08 18:24:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:04,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:24:04,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218177419] [2024-11-08 18:24:04,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218177419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522358013] [2024-11-08 18:24:04,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:24:04,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:04,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:04,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:24:04,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:24:04,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:24:04,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:24:04,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:24:04,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:24:04,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522358013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:04,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:04,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-08 18:24:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60009664] [2024-11-08 18:24:04,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:04,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:24:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:04,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:24:04,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:24:04,756 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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) [2024-11-08 18:24:04,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:04,869 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-11-08 18:24:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:24:04,870 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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 38 [2024-11-08 18:24:04,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:04,871 INFO L225 Difference]: With dead ends: 77 [2024-11-08 18:24:04,871 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 18:24:04,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:24:04,872 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:04,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 66 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:24:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 18:24:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-08 18:24:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 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) [2024-11-08 18:24:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2024-11-08 18:24:04,883 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 38 [2024-11-08 18:24:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:04,885 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2024-11-08 18:24:04,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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) [2024-11-08 18:24:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2024-11-08 18:24:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:24:04,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:04,888 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:04,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:24:05,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:05,089 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:05,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash -31887045, now seen corresponding path program 4 times [2024-11-08 18:24:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978870798] [2024-11-08 18:24:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 18:24:05,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:05,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978870798] [2024-11-08 18:24:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978870798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26381714] [2024-11-08 18:24:05,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:24:05,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:05,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:05,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:05,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:24:05,602 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:24:05,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:24:05,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:24:05,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:24:05,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:24:05,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26381714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:05,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:05,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-11-08 18:24:05,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804808774] [2024-11-08 18:24:05,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:05,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:24:05,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:24:05,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:24:05,975 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 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) [2024-11-08 18:24:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:06,167 INFO L93 Difference]: Finished difference Result 126 states and 158 transitions. [2024-11-08 18:24:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 18:24:06,168 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 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 56 [2024-11-08 18:24:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:06,169 INFO L225 Difference]: With dead ends: 126 [2024-11-08 18:24:06,169 INFO L226 Difference]: Without dead ends: 93 [2024-11-08 18:24:06,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:24:06,171 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:06,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 84 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:24:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-08 18:24:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-11-08 18:24:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 91 states have internal predecessors, (108), 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) [2024-11-08 18:24:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2024-11-08 18:24:06,187 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 56 [2024-11-08 18:24:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:06,187 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2024-11-08 18:24:06,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 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) [2024-11-08 18:24:06,188 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2024-11-08 18:24:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 18:24:06,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:06,189 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:06,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:24:06,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:06,390 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:06,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash -846107704, now seen corresponding path program 5 times [2024-11-08 18:24:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617536104] [2024-11-08 18:24:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617536104] [2024-11-08 18:24:06,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617536104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176787674] [2024-11-08 18:24:06,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:24:06,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:06,786 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:06,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:24:07,040 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-08 18:24:07,040 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:24:07,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:24:07,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:07,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176787674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:07,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:07,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-08 18:24:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927924965] [2024-11-08 18:24:07,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:07,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:24:07,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:07,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:24:07,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:24:07,493 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:07,606 INFO L93 Difference]: Finished difference Result 185 states and 230 transitions. [2024-11-08 18:24:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 18:24:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-11-08 18:24:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:07,608 INFO L225 Difference]: With dead ends: 185 [2024-11-08 18:24:07,608 INFO L226 Difference]: Without dead ends: 120 [2024-11-08 18:24:07,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:24:07,615 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:07,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:24:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-08 18:24:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-08 18:24:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.1428571428571428) internal successors, (136), 119 states have internal predecessors, (136), 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) [2024-11-08 18:24:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 136 transitions. [2024-11-08 18:24:07,631 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 136 transitions. Word has length 90 [2024-11-08 18:24:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:07,631 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 136 transitions. [2024-11-08 18:24:07,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 136 transitions. [2024-11-08 18:24:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-08 18:24:07,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:07,633 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:07,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:24:07,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:07,840 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:07,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:07,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1308720206, now seen corresponding path program 6 times [2024-11-08 18:24:07,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:07,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341025441] [2024-11-08 18:24:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:09,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341025441] [2024-11-08 18:24:09,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341025441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284521172] [2024-11-08 18:24:09,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:24:09,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:09,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:09,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:09,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:24:11,148 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-08 18:24:11,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:24:11,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 18:24:11,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:11,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284521172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:12,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 57 [2024-11-08 18:24:12,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012350655] [2024-11-08 18:24:12,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:12,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-08 18:24:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-08 18:24:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 18:24:12,612 INFO L87 Difference]: Start difference. First operand 120 states and 136 transitions. Second operand has 57 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 57 states have internal predecessors, (123), 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) [2024-11-08 18:24:12,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:12,829 INFO L93 Difference]: Finished difference Result 241 states and 300 transitions. [2024-11-08 18:24:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 18:24:12,830 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 57 states have internal predecessors, (123), 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 118 [2024-11-08 18:24:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:12,833 INFO L225 Difference]: With dead ends: 241 [2024-11-08 18:24:12,833 INFO L226 Difference]: Without dead ends: 176 [2024-11-08 18:24:12,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 18:24:12,838 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:12,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:24:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-08 18:24:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-08 18:24:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0971428571428572) internal successors, (192), 175 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2024-11-08 18:24:12,852 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 118 [2024-11-08 18:24:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:12,852 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2024-11-08 18:24:12,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 57 states have internal predecessors, (123), 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) [2024-11-08 18:24:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2024-11-08 18:24:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-08 18:24:12,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:12,855 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:12,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:24:13,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:13,059 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:13,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1056444838, now seen corresponding path program 7 times [2024-11-08 18:24:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441244844] [2024-11-08 18:24:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:13,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:16,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:16,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441244844] [2024-11-08 18:24:16,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441244844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:16,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632835714] [2024-11-08 18:24:16,286 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:24:16,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:16,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:16,288 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:16,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:24:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:16,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-08 18:24:16,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:16,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632835714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:21,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 113 [2024-11-08 18:24:21,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138339095] [2024-11-08 18:24:21,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:21,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-08 18:24:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-08 18:24:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-11-08 18:24:21,013 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand has 113 states, 113 states have (on average 2.079646017699115) internal successors, (235), 113 states have internal predecessors, (235), 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) [2024-11-08 18:24:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:21,561 INFO L93 Difference]: Finished difference Result 353 states and 440 transitions. [2024-11-08 18:24:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-08 18:24:21,562 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.079646017699115) internal successors, (235), 113 states have internal predecessors, (235), 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 174 [2024-11-08 18:24:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:21,566 INFO L225 Difference]: With dead ends: 353 [2024-11-08 18:24:21,567 INFO L226 Difference]: Without dead ends: 288 [2024-11-08 18:24:21,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-11-08 18:24:21,571 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:21,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:24:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-08 18:24:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-08 18:24:21,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.0592334494773519) internal successors, (304), 287 states have internal predecessors, (304), 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) [2024-11-08 18:24:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 304 transitions. [2024-11-08 18:24:21,606 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 304 transitions. Word has length 174 [2024-11-08 18:24:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:21,606 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 304 transitions. [2024-11-08 18:24:21,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.079646017699115) internal successors, (235), 113 states have internal predecessors, (235), 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) [2024-11-08 18:24:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 304 transitions. [2024-11-08 18:24:21,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-08 18:24:21,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:21,615 INFO L215 NwaCegarLoop]: trace histogram [110, 110, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:21,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 18:24:21,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:21,816 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:21,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1270355570, now seen corresponding path program 8 times [2024-11-08 18:24:21,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:21,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327675188] [2024-11-08 18:24:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:21,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12478 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:32,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:32,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327675188] [2024-11-08 18:24:32,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327675188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:32,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797156734] [2024-11-08 18:24:32,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:24:32,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:32,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:32,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:32,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:24:32,488 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:24:32,488 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:24:32,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-08 18:24:32,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12478 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:32,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12478 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:24:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797156734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:48,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:48,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 225 [2024-11-08 18:24:48,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400738443] [2024-11-08 18:24:48,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:48,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2024-11-08 18:24:48,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2024-11-08 18:24:48,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2024-11-08 18:24:48,458 INFO L87 Difference]: Start difference. First operand 288 states and 304 transitions. Second operand has 225 states, 225 states have (on average 2.04) internal successors, (459), 225 states have internal predecessors, (459), 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) [2024-11-08 18:24:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:49,748 INFO L93 Difference]: Finished difference Result 577 states and 720 transitions. [2024-11-08 18:24:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2024-11-08 18:24:49,749 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 225 states have (on average 2.04) internal successors, (459), 225 states have internal predecessors, (459), 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 286 [2024-11-08 18:24:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:49,751 INFO L225 Difference]: With dead ends: 577 [2024-11-08 18:24:49,751 INFO L226 Difference]: Without dead ends: 512 [2024-11-08 18:24:49,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2024-11-08 18:24:49,758 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:49,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 73 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:24:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-08 18:24:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2024-11-08 18:24:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.0332681017612524) internal successors, (528), 511 states have internal predecessors, (528), 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) [2024-11-08 18:24:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 528 transitions. [2024-11-08 18:24:49,780 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 528 transitions. Word has length 286 [2024-11-08 18:24:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:49,781 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 528 transitions. [2024-11-08 18:24:49,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 225 states have (on average 2.04) internal successors, (459), 225 states have internal predecessors, (459), 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) [2024-11-08 18:24:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 528 transitions. [2024-11-08 18:24:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2024-11-08 18:24:49,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:49,793 INFO L215 NwaCegarLoop]: trace histogram [222, 222, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:49,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 18:24:49,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:24:49,997 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:49,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash -638224734, now seen corresponding path program 9 times [2024-11-08 18:24:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102462783] [2024-11-08 18:24:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:49,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 49662 backedges. 0 proven. 49284 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 18:25:25,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:25,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102462783] [2024-11-08 18:25:25,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102462783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:25,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216529064] [2024-11-08 18:25:25,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:25:25,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:25,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:25,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:25,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:25:25,594 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-08 18:25:25,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:25:25,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:25:25,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 49662 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 49284 trivial. 0 not checked. [2024-11-08 18:25:27,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 49662 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 49284 trivial. 0 not checked. [2024-11-08 18:25:29,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216529064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:29,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:29,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [225, 17, 17] total 255 [2024-11-08 18:25:29,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097565305] [2024-11-08 18:25:29,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:29,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 255 states [2024-11-08 18:25:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:29,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2024-11-08 18:25:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25695, Invalid=39075, Unknown=0, NotChecked=0, Total=64770 [2024-11-08 18:25:29,078 INFO L87 Difference]: Start difference. First operand 512 states and 528 transitions. Second operand has 255 states, 255 states have (on average 2.2666666666666666) internal successors, (578), 255 states have internal predecessors, (578), 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) [2024-11-08 18:25:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:31,045 INFO L93 Difference]: Finished difference Result 644 states and 708 transitions. [2024-11-08 18:25:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2024-11-08 18:25:31,046 INFO L78 Accepts]: Start accepts. Automaton has has 255 states, 255 states have (on average 2.2666666666666666) internal successors, (578), 255 states have internal predecessors, (578), 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 510 [2024-11-08 18:25:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:31,050 INFO L225 Difference]: With dead ends: 644 [2024-11-08 18:25:31,050 INFO L226 Difference]: Without dead ends: 579 [2024-11-08 18:25:31,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1243 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6660 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=25695, Invalid=39075, Unknown=0, NotChecked=0, Total=64770 [2024-11-08 18:25:31,056 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 93 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:31,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 167 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:25:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-08 18:25:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 578. [2024-11-08 18:25:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 1.0571923743500866) internal successors, (610), 577 states have internal predecessors, (610), 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) [2024-11-08 18:25:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 610 transitions. [2024-11-08 18:25:31,078 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 610 transitions. Word has length 510 [2024-11-08 18:25:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:31,079 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 610 transitions. [2024-11-08 18:25:31,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 255 states, 255 states have (on average 2.2666666666666666) internal successors, (578), 255 states have internal predecessors, (578), 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) [2024-11-08 18:25:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 610 transitions. [2024-11-08 18:25:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-08 18:25:31,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:31,094 INFO L215 NwaCegarLoop]: trace histogram [223, 223, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:31,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 18:25:31,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:25:31,295 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:31,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash -86135369, now seen corresponding path program 10 times [2024-11-08 18:25:31,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:31,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141506822] [2024-11-08 18:25:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:31,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:26:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 51499 backedges. 0 proven. 49729 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-08 18:26:08,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:26:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141506822] [2024-11-08 18:26:08,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141506822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:26:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680349288] [2024-11-08 18:26:08,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:26:08,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:26:08,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:26:08,471 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:26:08,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:26:09,201 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:26:09,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:26:09,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:26:09,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:26:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 51499 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 49729 trivial. 0 not checked. [2024-11-08 18:26:12,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:26:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 51499 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 49729 trivial. 0 not checked. [2024-11-08 18:26:16,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680349288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:26:16,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:26:16,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [226, 33, 33] total 288 [2024-11-08 18:26:16,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988070801] [2024-11-08 18:26:16,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:26:16,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 288 states [2024-11-08 18:26:16,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:26:16,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 288 interpolants. [2024-11-08 18:26:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27440, Invalid=55216, Unknown=0, NotChecked=0, Total=82656 [2024-11-08 18:26:16,842 INFO L87 Difference]: Start difference. First operand 578 states and 610 transitions. Second operand has 288 states, 288 states have (on average 2.4583333333333335) internal successors, (708), 288 states have internal predecessors, (708), 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) [2024-11-08 18:26:19,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:26:19,178 INFO L93 Difference]: Finished difference Result 838 states and 966 transitions. [2024-11-08 18:26:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2024-11-08 18:26:19,179 INFO L78 Accepts]: Start accepts. Automaton has has 288 states, 288 states have (on average 2.4583333333333335) internal successors, (708), 288 states have internal predecessors, (708), 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 576 [2024-11-08 18:26:19,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:26:19,182 INFO L225 Difference]: With dead ends: 838 [2024-11-08 18:26:19,182 INFO L226 Difference]: Without dead ends: 709 [2024-11-08 18:26:19,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1376 GetRequests, 1090 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13826 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=27440, Invalid=55216, Unknown=0, NotChecked=0, Total=82656 [2024-11-08 18:26:19,188 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 249 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:26:19,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 161 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:26:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-08 18:26:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 708. [2024-11-08 18:26:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.091937765205092) internal successors, (772), 707 states have internal predecessors, (772), 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) [2024-11-08 18:26:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 772 transitions. [2024-11-08 18:26:19,212 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 772 transitions. Word has length 576 [2024-11-08 18:26:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:26:19,213 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 772 transitions. [2024-11-08 18:26:19,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 288 states, 288 states have (on average 2.4583333333333335) internal successors, (708), 288 states have internal predecessors, (708), 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) [2024-11-08 18:26:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 772 transitions. [2024-11-08 18:26:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2024-11-08 18:26:19,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:26:19,220 INFO L215 NwaCegarLoop]: trace histogram [224, 224, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:26:19,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 18:26:19,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:26:19,421 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:26:19,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:26:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash 407466012, now seen corresponding path program 11 times [2024-11-08 18:26:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:26:19,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307226601] [2024-11-08 18:26:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:26:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:26:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:26:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 57802 backedges. 0 proven. 50176 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-08 18:26:59,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:26:59,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307226601] [2024-11-08 18:26:59,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307226601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:26:59,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603888626] [2024-11-08 18:26:59,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:26:59,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:26:59,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:26:59,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:26:59,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375eae6-3046-4bab-906c-99e7fce681f8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process