./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/sorting_selectionsort_2_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/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_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/sorting_selectionsort_2_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/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_72385cf0-16a9-40e5-a56c-90e48afa24cd/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 cae1888d2d961d86748cda3b827a90e6d152bf2b6038710fc1a5581289f20b0c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:00:10,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:00:11,065 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:00:11,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:00:11,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:00:11,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:00:11,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:00:11,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:00:11,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:00:11,112 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:00:11,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:00:11,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:00:11,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:00:11,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:00:11,115 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:00:11,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:00:11,116 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:00:11,116 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:00:11,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:00:11,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:00:11,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:00:11,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:00:11,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:00:11,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:00:11,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:00:11,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:00:11,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:00:11,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:00:11,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:00:11,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:00:11,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:00:11,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:00:11,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:00:11,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:00:11,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:00:11,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:00:11,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:00:11,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:00:11,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:00:11,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:00:11,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:00:11,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:00:11,135 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_72385cf0-16a9-40e5-a56c-90e48afa24cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cae1888d2d961d86748cda3b827a90e6d152bf2b6038710fc1a5581289f20b0c [2024-11-08 19:00:11,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:00:11,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:00:11,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:00:11,522 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:00:11,522 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:00:11,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-examples/sorting_selectionsort_2_ground.i Unable to find full path for "g++" [2024-11-08 19:00:13,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:00:13,853 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:00:13,853 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/sv-benchmarks/c/array-examples/sorting_selectionsort_2_ground.i [2024-11-08 19:00:13,861 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/data/0c74f4257/b82620f6cd4c4913a0e85b0a028b4655/FLAG00a921019 [2024-11-08 19:00:13,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/data/0c74f4257/b82620f6cd4c4913a0e85b0a028b4655 [2024-11-08 19:00:13,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:00:13,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:00:13,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:00:13,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:00:13,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:00:13,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:00:13" (1/1) ... [2024-11-08 19:00:13,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53340ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:13, skipping insertion in model container [2024-11-08 19:00:13,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:00:13" (1/1) ... [2024-11-08 19:00:13,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:00:14,110 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_72385cf0-16a9-40e5-a56c-90e48afa24cd/sv-benchmarks/c/array-examples/sorting_selectionsort_2_ground.i[823,836] [2024-11-08 19:00:14,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:00:14,150 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:00:14,165 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_72385cf0-16a9-40e5-a56c-90e48afa24cd/sv-benchmarks/c/array-examples/sorting_selectionsort_2_ground.i[823,836] [2024-11-08 19:00:14,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:00:14,198 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:00:14,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14 WrapperNode [2024-11-08 19:00:14,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:00:14,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:00:14,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:00:14,200 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:00:14,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,237 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2024-11-08 19:00:14,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:00:14,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:00:14,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:00:14,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:00:14,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,266 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 19:00:14,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:00:14,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:00:14,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:00:14,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:00:14,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (1/1) ... [2024-11-08 19:00:14,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:00:14,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:14,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:00:14,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:00:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:00:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:00:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 19:00:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 19:00:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 19:00:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 19:00:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:00:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:00:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 19:00:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 19:00:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 19:00:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 19:00:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 19:00:14,467 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:00:14,469 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:00:14,738 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-08 19:00:14,739 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:00:14,755 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:00:14,755 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:00:14,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:00:14 BoogieIcfgContainer [2024-11-08 19:00:14,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:00:14,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:00:14,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:00:14,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:00:14,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:00:13" (1/3) ... [2024-11-08 19:00:14,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e83cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:00:14, skipping insertion in model container [2024-11-08 19:00:14,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:14" (2/3) ... [2024-11-08 19:00:14,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e83cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:00:14, skipping insertion in model container [2024-11-08 19:00:14,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:00:14" (3/3) ... [2024-11-08 19:00:14,767 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_2_ground.i [2024-11-08 19:00:14,789 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:00:14,789 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:00:14,858 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:00:14,865 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;@2a615e5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:00:14,866 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:00:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 39 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:00:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 19:00:14,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:14,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:14,878 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:14,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:14,883 INFO L85 PathProgramCache]: Analyzing trace with hash -822826332, now seen corresponding path program 1 times [2024-11-08 19:00:14,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:14,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765033071] [2024-11-08 19:00:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:14,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:15,162 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 19:00:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765033071] [2024-11-08 19:00:15,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765033071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:15,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:00:15,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:00:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921711402] [2024-11-08 19:00:15,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:15,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:00:15,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:00:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:00:15,227 INFO L87 Difference]: Start difference. First operand has 44 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 39 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:15,374 INFO L93 Difference]: Finished difference Result 107 states and 166 transitions. [2024-11-08 19:00:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:00:15,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 19:00:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:15,384 INFO L225 Difference]: With dead ends: 107 [2024-11-08 19:00:15,384 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 19:00:15,387 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 19:00:15,391 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 29 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:15,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 85 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:00:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 19:00:15,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2024-11-08 19:00:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:00:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2024-11-08 19:00:15,451 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 14 [2024-11-08 19:00:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:15,452 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2024-11-08 19:00:15,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:15,456 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2024-11-08 19:00:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 19:00:15,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:15,457 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:15,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:00:15,458 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:15,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:15,459 INFO L85 PathProgramCache]: Analyzing trace with hash -113113570, now seen corresponding path program 1 times [2024-11-08 19:00:15,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:15,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058138206] [2024-11-08 19:00:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:15,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:15,639 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 19:00:15,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:15,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058138206] [2024-11-08 19:00:15,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058138206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:15,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085373336] [2024-11-08 19:00:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:15,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:15,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:15,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:15,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:00:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:15,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 19:00:15,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:15,758 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 19:00:15,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:00:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085373336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:15,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:00:15,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 19:00:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017471054] [2024-11-08 19:00:15,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:15,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:00:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:15,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:00:15,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:00:15,762 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:15,824 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2024-11-08 19:00:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:00:15,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 19:00:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:15,826 INFO L225 Difference]: With dead ends: 84 [2024-11-08 19:00:15,827 INFO L226 Difference]: Without dead ends: 49 [2024-11-08 19:00:15,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 19:00:15,831 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 5 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:15,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 90 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:00:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-08 19:00:15,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-08 19:00:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:00:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 70 transitions. [2024-11-08 19:00:15,848 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 70 transitions. Word has length 19 [2024-11-08 19:00:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:15,848 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 70 transitions. [2024-11-08 19:00:15,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 70 transitions. [2024-11-08 19:00:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 19:00:15,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:15,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:15,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:00:16,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:16,051 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:16,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 279913440, now seen corresponding path program 1 times [2024-11-08 19:00:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:16,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619509238] [2024-11-08 19:00:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:16,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:16,240 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 19:00:16,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619509238] [2024-11-08 19:00:16,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619509238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406982644] [2024-11-08 19:00:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:16,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:16,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:16,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:00:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:16,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:00:16,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:16,390 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 19:00:16,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:16,440 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 19:00:16,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406982644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:16,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:16,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 19:00:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629502688] [2024-11-08 19:00:16,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:16,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:00:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:16,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:00:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:00:16,446 INFO L87 Difference]: Start difference. First operand 49 states and 70 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:16,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:16,745 INFO L93 Difference]: Finished difference Result 174 states and 269 transitions. [2024-11-08 19:00:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:00:16,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 19:00:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:16,750 INFO L225 Difference]: With dead ends: 174 [2024-11-08 19:00:16,750 INFO L226 Difference]: Without dead ends: 131 [2024-11-08 19:00:16,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 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 19:00:16,755 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 142 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:16,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 158 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:00:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-08 19:00:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-08 19:00:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 120 states have (on average 1.475) internal successors, (177), 120 states have internal predecessors, (177), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 19:00:16,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 195 transitions. [2024-11-08 19:00:16,789 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 195 transitions. Word has length 19 [2024-11-08 19:00:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:16,789 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 195 transitions. [2024-11-08 19:00:16,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 195 transitions. [2024-11-08 19:00:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 19:00:16,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:16,791 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:16,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 19:00:16,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:16,992 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:16,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1568960655, now seen corresponding path program 2 times [2024-11-08 19:00:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:16,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715903655] [2024-11-08 19:00:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 19:00:17,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:17,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715903655] [2024-11-08 19:00:17,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715903655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:17,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:00:17,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:00:17,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162169781] [2024-11-08 19:00:17,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:17,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:00:17,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:00:17,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:00:17,197 INFO L87 Difference]: Start difference. First operand 131 states and 195 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:17,341 INFO L93 Difference]: Finished difference Result 244 states and 367 transitions. [2024-11-08 19:00:17,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:00:17,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-08 19:00:17,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:17,344 INFO L225 Difference]: With dead ends: 244 [2024-11-08 19:00:17,348 INFO L226 Difference]: Without dead ends: 136 [2024-11-08 19:00:17,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:00:17,351 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 37 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:17,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 102 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:00:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-08 19:00:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-11-08 19:00:17,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 122 states have (on average 1.4672131147540983) internal successors, (179), 122 states have internal predecessors, (179), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 19:00:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 197 transitions. [2024-11-08 19:00:17,385 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 197 transitions. Word has length 25 [2024-11-08 19:00:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:17,385 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 197 transitions. [2024-11-08 19:00:17,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 197 transitions. [2024-11-08 19:00:17,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 19:00:17,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:17,388 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:17,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:00:17,388 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:17,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2094363066, now seen corresponding path program 1 times [2024-11-08 19:00:17,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:17,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123745772] [2024-11-08 19:00:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:17,543 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 19:00:17,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:17,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123745772] [2024-11-08 19:00:17,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123745772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:17,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018027816] [2024-11-08 19:00:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:17,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:17,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:17,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:17,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:00:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:17,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:00:17,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:17,707 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 19:00:17,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:17,814 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 19:00:17,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018027816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:17,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:17,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-08 19:00:17,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859361944] [2024-11-08 19:00:17,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:17,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 19:00:17,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:17,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 19:00:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2024-11-08 19:00:17,817 INFO L87 Difference]: Start difference. First operand 133 states and 197 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:18,416 INFO L93 Difference]: Finished difference Result 439 states and 678 transitions. [2024-11-08 19:00:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 19:00:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-08 19:00:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:18,420 INFO L225 Difference]: With dead ends: 439 [2024-11-08 19:00:18,420 INFO L226 Difference]: Without dead ends: 317 [2024-11-08 19:00:18,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=179, Unknown=0, NotChecked=0, Total=306 [2024-11-08 19:00:18,428 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 521 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:18,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 336 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 19:00:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-08 19:00:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 310. [2024-11-08 19:00:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 287 states have (on average 1.4738675958188154) internal successors, (423), 287 states have internal predecessors, (423), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-08 19:00:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 465 transitions. [2024-11-08 19:00:18,493 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 465 transitions. Word has length 29 [2024-11-08 19:00:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:18,495 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 465 transitions. [2024-11-08 19:00:18,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 465 transitions. [2024-11-08 19:00:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 19:00:18,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:18,498 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:18,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 19:00:18,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:18,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:18,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:18,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2091964991, now seen corresponding path program 2 times [2024-11-08 19:00:18,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:18,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601643243] [2024-11-08 19:00:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-08 19:00:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601643243] [2024-11-08 19:00:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601643243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:18,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:00:18,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:00:18,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921412327] [2024-11-08 19:00:18,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:18,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:00:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:18,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:00:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:00:18,954 INFO L87 Difference]: Start difference. First operand 310 states and 465 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:19,067 INFO L93 Difference]: Finished difference Result 568 states and 865 transitions. [2024-11-08 19:00:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:00:19,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-08 19:00:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:19,070 INFO L225 Difference]: With dead ends: 568 [2024-11-08 19:00:19,070 INFO L226 Difference]: Without dead ends: 304 [2024-11-08 19:00:19,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:00:19,076 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:19,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:00:19,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-08 19:00:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-11-08 19:00:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 282 states have (on average 1.4680851063829787) internal successors, (414), 282 states have internal predecessors, (414), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-08 19:00:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 454 transitions. [2024-11-08 19:00:19,121 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 454 transitions. Word has length 45 [2024-11-08 19:00:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:19,121 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 454 transitions. [2024-11-08 19:00:19,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:19,122 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 454 transitions. [2024-11-08 19:00:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 19:00:19,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:19,125 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:19,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:00:19,125 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:19,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2023347802, now seen corresponding path program 1 times [2024-11-08 19:00:19,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:19,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287770988] [2024-11-08 19:00:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:19,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:19,527 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 19:00:19,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:19,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287770988] [2024-11-08 19:00:19,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287770988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:19,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92993818] [2024-11-08 19:00:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:19,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:19,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:19,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:19,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:00:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:19,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 19:00:19,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:19,723 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 19:00:19,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:20,091 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 19:00:20,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92993818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:20,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:20,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-08 19:00:20,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094050580] [2024-11-08 19:00:20,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:20,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 19:00:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:20,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 19:00:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 19:00:20,098 INFO L87 Difference]: Start difference. First operand 304 states and 454 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:21,147 INFO L93 Difference]: Finished difference Result 921 states and 1424 transitions. [2024-11-08 19:00:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 19:00:21,148 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-08 19:00:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:21,153 INFO L225 Difference]: With dead ends: 921 [2024-11-08 19:00:21,153 INFO L226 Difference]: Without dead ends: 640 [2024-11-08 19:00:21,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 19:00:21,155 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 1308 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:21,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 471 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 19:00:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-08 19:00:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2024-11-08 19:00:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 594 states have (on average 1.4848484848484849) internal successors, (882), 594 states have internal predecessors, (882), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-08 19:00:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 970 transitions. [2024-11-08 19:00:21,211 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 970 transitions. Word has length 45 [2024-11-08 19:00:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:21,212 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 970 transitions. [2024-11-08 19:00:21,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 970 transitions. [2024-11-08 19:00:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 19:00:21,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:21,213 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:21,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:00:21,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:21,415 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:21,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1085879070, now seen corresponding path program 2 times [2024-11-08 19:00:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:21,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471392241] [2024-11-08 19:00:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:21,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471392241] [2024-11-08 19:00:22,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471392241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:22,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779203064] [2024-11-08 19:00:22,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:00:22,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:22,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:22,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:22,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:00:22,410 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:00:22,410 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:00:22,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 19:00:22,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:22,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:23,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779203064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:23,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:23,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-08 19:00:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115651563] [2024-11-08 19:00:23,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:23,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 19:00:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 19:00:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 19:00:23,704 INFO L87 Difference]: Start difference. First operand 640 states and 970 transitions. Second operand has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:27,138 INFO L93 Difference]: Finished difference Result 1905 states and 2972 transitions. [2024-11-08 19:00:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 19:00:27,139 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-08 19:00:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:27,147 INFO L225 Difference]: With dead ends: 1905 [2024-11-08 19:00:27,147 INFO L226 Difference]: Without dead ends: 1312 [2024-11-08 19:00:27,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 19:00:27,150 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3657 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3748 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:27,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3748 Valid, 874 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 19:00:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2024-11-08 19:00:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2024-11-08 19:00:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1218 states have (on average 1.4926108374384237) internal successors, (1818), 1218 states have internal predecessors, (1818), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-08 19:00:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2002 transitions. [2024-11-08 19:00:27,217 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2002 transitions. Word has length 69 [2024-11-08 19:00:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:27,218 INFO L471 AbstractCegarLoop]: Abstraction has 1312 states and 2002 transitions. [2024-11-08 19:00:27,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2002 transitions. [2024-11-08 19:00:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-08 19:00:27,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:27,223 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:27,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:00:27,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 19:00:27,428 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:27,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1934674086, now seen corresponding path program 3 times [2024-11-08 19:00:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:27,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478413281] [2024-11-08 19:00:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:30,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478413281] [2024-11-08 19:00:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478413281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205655311] [2024-11-08 19:00:30,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 19:00:30,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:30,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:30,209 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:30,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:00:30,344 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 19:00:30,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:00:30,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:00:30,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2119 trivial. 0 not checked. [2024-11-08 19:00:30,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:00:30,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205655311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:30,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:00:30,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [49] total 53 [2024-11-08 19:00:30,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975489501] [2024-11-08 19:00:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:30,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:00:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:00:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1373, Invalid=1383, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 19:00:30,429 INFO L87 Difference]: Start difference. First operand 1312 states and 2002 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:30,557 INFO L93 Difference]: Finished difference Result 2515 states and 3891 transitions. [2024-11-08 19:00:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:00:30,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-08 19:00:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:30,569 INFO L225 Difference]: With dead ends: 2515 [2024-11-08 19:00:30,570 INFO L226 Difference]: Without dead ends: 1320 [2024-11-08 19:00:30,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1373, Invalid=1383, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 19:00:30,577 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:30,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 90 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:00:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2024-11-08 19:00:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1315. [2024-11-08 19:00:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1221 states have (on average 1.493038493038493) internal successors, (1823), 1221 states have internal predecessors, (1823), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-08 19:00:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 2007 transitions. [2024-11-08 19:00:30,650 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 2007 transitions. Word has length 117 [2024-11-08 19:00:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:30,652 INFO L471 AbstractCegarLoop]: Abstraction has 1315 states and 2007 transitions. [2024-11-08 19:00:30,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 2007 transitions. [2024-11-08 19:00:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-08 19:00:30,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:30,657 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:30,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 19:00:30,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:30,858 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:30,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:30,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1967266200, now seen corresponding path program 1 times [2024-11-08 19:00:30,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:30,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598719242] [2024-11-08 19:00:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:30,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:33,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598719242] [2024-11-08 19:00:33,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598719242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434265170] [2024-11-08 19:00:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:33,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:33,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:33,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:33,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:00:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:33,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 19:00:33,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:33,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:37,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434265170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:37,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:37,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-08 19:00:37,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610401482] [2024-11-08 19:00:37,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:37,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-08 19:00:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-08 19:00:37,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-08 19:00:37,403 INFO L87 Difference]: Start difference. First operand 1315 states and 2007 transitions. Second operand has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:51,348 INFO L93 Difference]: Finished difference Result 3879 states and 6078 transitions. [2024-11-08 19:00:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-08 19:00:51,348 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-08 19:00:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:51,360 INFO L225 Difference]: With dead ends: 3879 [2024-11-08 19:00:51,361 INFO L226 Difference]: Without dead ends: 2659 [2024-11-08 19:00:51,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-08 19:00:51,366 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 13265 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13452 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:51,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13452 Valid, 1493 Invalid, 2567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [675 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 19:00:51,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2024-11-08 19:00:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2659. [2024-11-08 19:00:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2659 states, 2469 states have (on average 1.496557310652086) internal successors, (3695), 2469 states have internal predecessors, (3695), 188 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-08 19:00:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 4071 transitions. [2024-11-08 19:00:51,461 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 4071 transitions. Word has length 117 [2024-11-08 19:00:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:51,462 INFO L471 AbstractCegarLoop]: Abstraction has 2659 states and 4071 transitions. [2024-11-08 19:00:51,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 4071 transitions. [2024-11-08 19:00:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-08 19:00:51,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:51,465 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:51,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 19:00:51,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:51,666 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:51,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:51,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1145078136, now seen corresponding path program 2 times [2024-11-08 19:00:51,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:51,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400567715] [2024-11-08 19:00:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:51,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8842 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:59,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400567715] [2024-11-08 19:00:59,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400567715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805206401] [2024-11-08 19:00:59,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:00:59,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:59,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:59,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:59,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 19:00:59,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:00:59,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:00:59,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-08 19:00:59,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8842 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:00:59,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:01:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8842 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:01:11,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805206401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:01:11,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:01:11,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-08 19:01:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680361672] [2024-11-08 19:01:11,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:01:11,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-08 19:01:11,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:11,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-08 19:01:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-08 19:01:11,495 INFO L87 Difference]: Start difference. First operand 2659 states and 4071 transitions. Second operand has 193 states, 193 states have (on average 2.077720207253886) internal successors, (401), 193 states have internal predecessors, (401), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:03:25,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:03:25,792 INFO L93 Difference]: Finished difference Result 7815 states and 12270 transitions. [2024-11-08 19:03:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-08 19:03:25,793 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.077720207253886) internal successors, (401), 193 states have internal predecessors, (401), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2024-11-08 19:03:25,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:03:25,816 INFO L225 Difference]: With dead ends: 7815 [2024-11-08 19:03:25,816 INFO L226 Difference]: Without dead ends: 5347 [2024-11-08 19:03:25,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-08 19:03:25,825 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 21908 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 3846 mSolverCounterSat, 1165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22287 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 5011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1165 IncrementalHoareTripleChecker+Valid, 3846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:03:25,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22287 Valid, 3044 Invalid, 5011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1165 Valid, 3846 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-08 19:03:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2024-11-08 19:03:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5347. [2024-11-08 19:03:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5347 states, 4965 states have (on average 1.4982880161127896) internal successors, (7439), 4965 states have internal predecessors, (7439), 380 states have call successors, (380), 1 states have call predecessors, (380), 1 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2024-11-08 19:03:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 8199 transitions. [2024-11-08 19:03:26,001 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 8199 transitions. Word has length 213 [2024-11-08 19:03:26,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:03:26,001 INFO L471 AbstractCegarLoop]: Abstraction has 5347 states and 8199 transitions. [2024-11-08 19:03:26,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.077720207253886) internal successors, (401), 193 states have internal predecessors, (401), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:03:26,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 8199 transitions. [2024-11-08 19:03:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-08 19:03:26,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:03:26,010 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:03:26,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 19:03:26,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:03:26,211 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:03:26,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:03:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1275800, now seen corresponding path program 3 times [2024-11-08 19:03:26,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:03:26,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104548134] [2024-11-08 19:03:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:03:26,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:03:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:03:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 36106 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:03:53,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:03:53,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104548134] [2024-11-08 19:03:53,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104548134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:03:53,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126997386] [2024-11-08 19:03:53,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 19:03:53,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:03:53,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:03:53,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:03:54,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:03:54,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 19:03:54,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:03:54,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:03:54,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:03:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 36106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-08 19:03:54,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:03:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 36106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-08 19:03:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126997386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:03:55,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:03:55,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 6, 6] total 201 [2024-11-08 19:03:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837690457] [2024-11-08 19:03:55,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:03:55,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2024-11-08 19:03:55,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:03:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2024-11-08 19:03:55,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18942, Invalid=21258, Unknown=0, NotChecked=0, Total=40200 [2024-11-08 19:03:55,262 INFO L87 Difference]: Start difference. First operand 5347 states and 8199 transitions. Second operand has 201 states, 201 states have (on average 2.129353233830846) internal successors, (428), 201 states have internal predecessors, (428), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:10:02,335 INFO L93 Difference]: Finished difference Result 13322 states and 21221 transitions. [2024-11-08 19:10:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 777 states. [2024-11-08 19:10:02,336 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 201 states have (on average 2.129353233830846) internal successors, (428), 201 states have internal predecessors, (428), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2024-11-08 19:10:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:10:02,379 INFO L225 Difference]: With dead ends: 13322 [2024-11-08 19:10:02,379 INFO L226 Difference]: Without dead ends: 8358 [2024-11-08 19:10:02,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 781 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171373 ImplicationChecksByTransitivity, 95.8s TimeCoverageRelationStatistics Valid=192074, Invalid=420232, Unknown=0, NotChecked=0, Total=612306 [2024-11-08 19:10:02,430 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 38607 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 4754 mSolverCounterSat, 2063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38990 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 6817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2063 IncrementalHoareTripleChecker+Valid, 4754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:10:02,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38990 Valid, 2222 Invalid, 6817 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2063 Valid, 4754 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-08 19:10:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8358 states. [2024-11-08 19:10:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8358 to 8320. [2024-11-08 19:10:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8320 states, 7934 states have (on average 1.340559616838921) internal successors, (10636), 7934 states have internal predecessors, (10636), 384 states have call successors, (384), 1 states have call predecessors, (384), 1 states have return successors, (384), 384 states have call predecessors, (384), 384 states have call successors, (384) [2024-11-08 19:10:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8320 states to 8320 states and 11404 transitions. [2024-11-08 19:10:02,718 INFO L78 Accepts]: Start accepts. Automaton has 8320 states and 11404 transitions. Word has length 405 [2024-11-08 19:10:02,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:10:02,719 INFO L471 AbstractCegarLoop]: Abstraction has 8320 states and 11404 transitions. [2024-11-08 19:10:02,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 201 states have (on average 2.129353233830846) internal successors, (428), 201 states have internal predecessors, (428), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8320 states and 11404 transitions. [2024-11-08 19:10:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-11-08 19:10:02,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:10:02,727 INFO L215 NwaCegarLoop]: trace histogram [192, 192, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:02,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:10:02,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:02,929 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:10:02,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash 251481578, now seen corresponding path program 4 times [2024-11-08 19:10:02,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:02,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740167192] [2024-11-08 19:10:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:02,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 36930 backedges. 0 proven. 36864 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 19:10:28,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:28,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740167192] [2024-11-08 19:10:28,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740167192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:28,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339730151] [2024-11-08 19:10:28,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 19:10:28,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:28,021 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:28,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72385cf0-16a9-40e5-a56c-90e48afa24cd/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:10:28,609 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 19:10:28,609 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:10:28,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 194 conjuncts are in the unsatisfiable core [2024-11-08 19:10:28,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 36930 backedges. 0 proven. 36864 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 19:10:29,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:11:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 36930 backedges. 0 proven. 36864 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 19:11:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339730151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:11:15,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:11:15,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195, 195] total 389 [2024-11-08 19:11:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339096344] [2024-11-08 19:11:15,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:11:15,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 389 states [2024-11-08 19:11:15,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:11:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 389 interpolants. [2024-11-08 19:11:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75466, Invalid=75466, Unknown=0, NotChecked=0, Total=150932 [2024-11-08 19:11:15,218 INFO L87 Difference]: Start difference. First operand 8320 states and 11404 transitions. Second operand has 389 states, 389 states have (on average 2.038560411311054) internal successors, (793), 389 states have internal predecessors, (793), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)