./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC --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 f57f8b833105028fdf95b78a3cf338388755f00064f1be1e7a158d1da7dbd5a2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:48:26,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:48:26,439 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:48:26,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:48:26,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:48:26,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:48:26,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:48:26,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:48:26,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:48:26,486 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:48:26,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:48:26,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:48:26,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:48:26,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:48:26,487 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:48:26,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:48:26,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:48:26,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:48:26,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:48:26,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:48:26,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:48:26,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:48:26,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:48:26,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:48:26,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:48:26,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:48:26,489 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:48:26,489 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:48:26,490 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:48:26,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:48:26,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:48:26,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:48:26,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:48:26,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:48:26,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:48:26,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:48:26,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:48:26,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:48:26,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:48:26,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:48:26,492 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:48:26,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:48:26,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:48:26,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:48:26,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:48:26,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:48:26,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:48:26,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:48:26,493 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC 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 -> f57f8b833105028fdf95b78a3cf338388755f00064f1be1e7a158d1da7dbd5a2 [2024-11-24 00:48:26,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:48:26,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:48:26,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:48:26,884 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:48:26,884 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:48:26,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c [2024-11-24 00:48:30,299 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/data/c146f3c21/e2b3bd31be7e4cf38aa82c96ce29ba6c/FLAG9f2d5e38f [2024-11-24 00:48:30,599 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:48:30,601 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c [2024-11-24 00:48:30,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/data/c146f3c21/e2b3bd31be7e4cf38aa82c96ce29ba6c/FLAG9f2d5e38f [2024-11-24 00:48:30,631 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/data/c146f3c21/e2b3bd31be7e4cf38aa82c96ce29ba6c [2024-11-24 00:48:30,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:48:30,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:48:30,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:48:30,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:48:30,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:48:30,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:30,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140cd51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30, skipping insertion in model container [2024-11-24 00:48:30,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:30,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:48:30,847 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_63e7229a-cf6a-4da5-b4ad-25101096ea61/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2024-11-24 00:48:30,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:48:30,869 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:48:30,908 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_63e7229a-cf6a-4da5-b4ad-25101096ea61/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2024-11-24 00:48:30,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:48:30,929 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:48:30,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30 WrapperNode [2024-11-24 00:48:30,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:48:30,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:48:30,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:48:30,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:48:30,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:30,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:30,982 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 126 [2024-11-24 00:48:30,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:48:30,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:48:30,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:48:30,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:48:30,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:30,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:30,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,019 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:48:31,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,024 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:48:31,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:48:31,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:48:31,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:48:31,045 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (1/1) ... [2024-11-24 00:48:31,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:48:31,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:31,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:48:31,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:48:31,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:48:31,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:48:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:48:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:48:31,213 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:48:31,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:48:31,441 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-24 00:48:31,441 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:48:31,454 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:48:31,455 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:48:31,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:48:31 BoogieIcfgContainer [2024-11-24 00:48:31,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:48:31,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:48:31,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:48:31,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:48:31,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:48:30" (1/3) ... [2024-11-24 00:48:31,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62170cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:48:31, skipping insertion in model container [2024-11-24 00:48:31,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:48:30" (2/3) ... [2024-11-24 00:48:31,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62170cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:48:31, skipping insertion in model container [2024-11-24 00:48:31,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:48:31" (3/3) ... [2024-11-24 00:48:31,466 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.p+cfa-reducer.c [2024-11-24 00:48:31,482 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:48:31,484 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zonotope_3.c.p+cfa-reducer.c that has 1 procedures, 17 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 00:48:31,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:48:31,582 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;@2aee6171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:48:31,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:48:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-24 00:48:31,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:31,594 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:31,594 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:31,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash 739680105, now seen corresponding path program 1 times [2024-11-24 00:48:31,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:31,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686376744] [2024-11-24 00:48:31,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:31,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:31,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:31,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686376744] [2024-11-24 00:48:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686376744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:48:31,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:48:31,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:48:31,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852966448] [2024-11-24 00:48:31,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:48:31,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:48:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:31,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:48:31,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:48:31,955 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:31,983 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2024-11-24 00:48:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:48:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-24 00:48:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:31,991 INFO L225 Difference]: With dead ends: 33 [2024-11-24 00:48:31,991 INFO L226 Difference]: Without dead ends: 19 [2024-11-24 00:48:31,994 INFO L434 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 [2024-11-24 00:48:31,997 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:31,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 37 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:48:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-24 00:48:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2024-11-24 00:48:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-11-24 00:48:32,032 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2024-11-24 00:48:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:32,032 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-11-24 00:48:32,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2024-11-24 00:48:32,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 00:48:32,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:32,033 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:32,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:48:32,034 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:32,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 573752309, now seen corresponding path program 1 times [2024-11-24 00:48:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:32,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760336884] [2024-11-24 00:48:32,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:32,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:32,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760336884] [2024-11-24 00:48:32,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760336884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:48:32,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:48:32,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:48:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906463289] [2024-11-24 00:48:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:48:32,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:48:32,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:32,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:48:32,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:48:32,150 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:32,167 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2024-11-24 00:48:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:48:32,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-24 00:48:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:32,169 INFO L225 Difference]: With dead ends: 28 [2024-11-24 00:48:32,169 INFO L226 Difference]: Without dead ends: 14 [2024-11-24 00:48:32,170 INFO L434 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 [2024-11-24 00:48:32,171 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:32,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:48:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-24 00:48:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-24 00:48:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-24 00:48:32,175 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2024-11-24 00:48:32,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:32,175 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-24 00:48:32,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-24 00:48:32,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 00:48:32,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:32,176 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:32,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:48:32,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:32,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:32,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1667531312, now seen corresponding path program 1 times [2024-11-24 00:48:32,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:32,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303234329] [2024-11-24 00:48:32,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:32,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:32,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:32,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303234329] [2024-11-24 00:48:32,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303234329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:32,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501022103] [2024-11-24 00:48:32,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:32,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:32,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:32,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:32,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:48:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:32,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:48:32,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:32,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:48:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:32,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501022103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:48:32,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:48:32,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-24 00:48:32,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095785553] [2024-11-24 00:48:32,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:48:32,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:48:32,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:32,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:48:32,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:48:32,593 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:32,631 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-24 00:48:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:48:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-24 00:48:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:32,633 INFO L225 Difference]: With dead ends: 33 [2024-11-24 00:48:32,633 INFO L226 Difference]: Without dead ends: 26 [2024-11-24 00:48:32,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:48:32,636 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:32,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:48:32,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-24 00:48:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-24 00:48:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-24 00:48:32,645 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2024-11-24 00:48:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:32,645 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-24 00:48:32,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-24 00:48:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-24 00:48:32,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:32,648 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:32,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:48:32,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:32,848 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:32,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:32,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1396128379, now seen corresponding path program 2 times [2024-11-24 00:48:32,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:32,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478985717] [2024-11-24 00:48:32,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:48:32,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:32,887 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:48:32,888 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 00:48:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478985717] [2024-11-24 00:48:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478985717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:48:32,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:48:32,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:48:32,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446509583] [2024-11-24 00:48:32,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:48:32,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:48:32,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:32,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:48:32,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:48:32,982 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:33,007 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2024-11-24 00:48:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:48:33,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-24 00:48:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:33,009 INFO L225 Difference]: With dead ends: 30 [2024-11-24 00:48:33,009 INFO L226 Difference]: Without dead ends: 26 [2024-11-24 00:48:33,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:48:33,010 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:33,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:48:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-24 00:48:33,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-24 00:48:33,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-24 00:48:33,017 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 24 [2024-11-24 00:48:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:33,017 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-24 00:48:33,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-24 00:48:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-24 00:48:33,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:33,018 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:33,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:48:33,019 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:33,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1379117718, now seen corresponding path program 1 times [2024-11-24 00:48:33,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:33,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405332178] [2024-11-24 00:48:33,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:33,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405332178] [2024-11-24 00:48:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405332178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841127317] [2024-11-24 00:48:33,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:33,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:33,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:48:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:33,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:48:33,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:33,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:48:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:33,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841127317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:48:33,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:48:33,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-24 00:48:33,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147876973] [2024-11-24 00:48:33,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:48:33,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:48:33,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:33,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:48:33,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:48:33,662 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:33,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:33,720 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2024-11-24 00:48:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:48:33,721 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-24 00:48:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:33,722 INFO L225 Difference]: With dead ends: 57 [2024-11-24 00:48:33,722 INFO L226 Difference]: Without dead ends: 50 [2024-11-24 00:48:33,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:48:33,723 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:33,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:48:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-24 00:48:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-24 00:48:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-24 00:48:33,741 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 24 [2024-11-24 00:48:33,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:33,745 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-24 00:48:33,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-24 00:48:33,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-24 00:48:33,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:33,746 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:33,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:48:33,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:33,947 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:33,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:33,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1660556692, now seen corresponding path program 2 times [2024-11-24 00:48:33,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:33,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668249110] [2024-11-24 00:48:33,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:48:33,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:33,995 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:48:33,995 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:34,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668249110] [2024-11-24 00:48:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668249110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462502894] [2024-11-24 00:48:34,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:48:34,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:34,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:34,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:34,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:48:34,661 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:48:34,662 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:34,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 00:48:34,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:34,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:48:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:35,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462502894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:48:35,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:48:35,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-24 00:48:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061037742] [2024-11-24 00:48:35,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:48:35,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:48:35,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:35,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:48:35,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:48:35,154 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:35,274 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2024-11-24 00:48:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:48:35,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-24 00:48:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:35,276 INFO L225 Difference]: With dead ends: 105 [2024-11-24 00:48:35,276 INFO L226 Difference]: Without dead ends: 98 [2024-11-24 00:48:35,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:48:35,277 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:35,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:48:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-24 00:48:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-24 00:48:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2024-11-24 00:48:35,285 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 48 [2024-11-24 00:48:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:35,285 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2024-11-24 00:48:35,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2024-11-24 00:48:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-24 00:48:35,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:35,288 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:35,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:48:35,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 00:48:35,489 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:35,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:35,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1914010600, now seen corresponding path program 3 times [2024-11-24 00:48:35,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:35,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363317646] [2024-11-24 00:48:35,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:48:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:35,593 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-24 00:48:35,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:36,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:36,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363317646] [2024-11-24 00:48:36,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363317646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:36,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486848903] [2024-11-24 00:48:36,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:48:36,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:36,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:36,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:36,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:48:37,069 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-24 00:48:37,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:37,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:48:37,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:37,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:48:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486848903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:48:38,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:48:38,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-24 00:48:38,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833066445] [2024-11-24 00:48:38,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:48:38,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-24 00:48:38,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:38,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-24 00:48:38,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 00:48:38,491 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 49 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:38,738 INFO L93 Difference]: Finished difference Result 201 states and 226 transitions. [2024-11-24 00:48:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-24 00:48:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 49 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-11-24 00:48:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:38,742 INFO L225 Difference]: With dead ends: 201 [2024-11-24 00:48:38,742 INFO L226 Difference]: Without dead ends: 194 [2024-11-24 00:48:38,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 00:48:38,745 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:38,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 128 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:48:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-24 00:48:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-24 00:48:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.0103626943005182) internal successors, (195), 193 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2024-11-24 00:48:38,762 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 96 [2024-11-24 00:48:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:38,762 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2024-11-24 00:48:38,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 49 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:38,763 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2024-11-24 00:48:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-24 00:48:38,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:38,775 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:38,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:48:38,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 00:48:38,976 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:38,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:38,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1650204528, now seen corresponding path program 4 times [2024-11-24 00:48:38,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:38,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356967122] [2024-11-24 00:48:38,978 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:48:38,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:39,141 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:48:39,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356967122] [2024-11-24 00:48:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356967122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808212466] [2024-11-24 00:48:42,561 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:48:42,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:42,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:42,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:48:43,124 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:48:43,125 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:43,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 1548 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 00:48:43,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:43,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:48:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:47,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808212466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:48:47,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:48:47,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2024-11-24 00:48:47,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327420606] [2024-11-24 00:48:47,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:48:47,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-24 00:48:47,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:47,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-24 00:48:47,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 00:48:47,624 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand has 96 states, 96 states have (on average 3.9375) internal successors, (378), 96 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:48,176 INFO L93 Difference]: Finished difference Result 393 states and 442 transitions. [2024-11-24 00:48:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-24 00:48:48,177 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.9375) internal successors, (378), 96 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2024-11-24 00:48:48,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:48,179 INFO L225 Difference]: With dead ends: 393 [2024-11-24 00:48:48,179 INFO L226 Difference]: Without dead ends: 386 [2024-11-24 00:48:48,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 00:48:48,182 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:48,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 246 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:48:48,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-24 00:48:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2024-11-24 00:48:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.0051948051948052) internal successors, (387), 385 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2024-11-24 00:48:48,201 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 192 [2024-11-24 00:48:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:48,201 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2024-11-24 00:48:48,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.9375) internal successors, (378), 96 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:48:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2024-11-24 00:48:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-24 00:48:48,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:48,212 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:48,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:48:48,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 00:48:48,413 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:48,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash 215943648, now seen corresponding path program 5 times [2024-11-24 00:48:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:48,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100041455] [2024-11-24 00:48:48,413 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:48:48,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:48,902 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-24 00:48:48,902 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:57,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100041455] [2024-11-24 00:48:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100041455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834356136] [2024-11-24 00:48:57,432 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:48:57,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:57,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:57,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:57,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:48:58,773 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-24 00:48:58,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:48:58,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-24 00:48:58,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:59,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:49:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:49:12,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834356136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:49:12,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:49:12,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 192 [2024-11-24 00:49:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374634886] [2024-11-24 00:49:12,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:49:12,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-24 00:49:12,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:49:12,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-24 00:49:12,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-11-24 00:49:12,188 INFO L87 Difference]: Start difference. First operand 386 states and 387 transitions. Second operand has 192 states, 192 states have (on average 3.96875) internal successors, (762), 192 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:49:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:49:13,826 INFO L93 Difference]: Finished difference Result 777 states and 874 transitions. [2024-11-24 00:49:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-24 00:49:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 3.96875) internal successors, (762), 192 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2024-11-24 00:49:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:49:13,831 INFO L225 Difference]: With dead ends: 777 [2024-11-24 00:49:13,831 INFO L226 Difference]: Without dead ends: 770 [2024-11-24 00:49:13,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-11-24 00:49:13,834 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:49:13,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 414 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:49:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-24 00:49:13,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2024-11-24 00:49:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.0026007802340702) internal successors, (771), 769 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:49:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 771 transitions. [2024-11-24 00:49:13,866 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 771 transitions. Word has length 384 [2024-11-24 00:49:13,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:49:13,867 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 771 transitions. [2024-11-24 00:49:13,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 3.96875) internal successors, (762), 192 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:49:13,868 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 771 transitions. [2024-11-24 00:49:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2024-11-24 00:49:13,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:49:13,890 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:49:13,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:49:14,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:49:14,091 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:49:14,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:49:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1640946816, now seen corresponding path program 6 times [2024-11-24 00:49:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:49:14,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537831369] [2024-11-24 00:49:14,092 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:49:14,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:49:15,039 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 191 check-sat command(s) [2024-11-24 00:49:15,039 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:49:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:49:48,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:49:48,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537831369] [2024-11-24 00:49:48,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537831369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:49:48,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439978009] [2024-11-24 00:49:48,065 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:49:48,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:49:48,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:49:48,067 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:49:48,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:49:51,660 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 191 check-sat command(s) [2024-11-24 00:49:51,660 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:49:51,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 6156 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-24 00:49:51,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:49:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:49:52,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:50:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:40,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439978009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:50:40,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:50:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2024-11-24 00:50:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081600634] [2024-11-24 00:50:40,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:50:40,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-11-24 00:50:40,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:40,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-11-24 00:50:40,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-11-24 00:50:40,244 INFO L87 Difference]: Start difference. First operand 770 states and 771 transitions. Second operand has 385 states, 385 states have (on average 3.987012987012987) internal successors, (1535), 385 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:47,342 INFO L93 Difference]: Finished difference Result 1545 states and 1738 transitions. [2024-11-24 00:50:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-24 00:50:47,344 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 3.987012987012987) internal successors, (1535), 385 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 768 [2024-11-24 00:50:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:47,350 INFO L225 Difference]: With dead ends: 1545 [2024-11-24 00:50:47,351 INFO L226 Difference]: Without dead ends: 1538 [2024-11-24 00:50:47,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1727 GetRequests, 1344 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 62.7s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-11-24 00:50:47,358 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:47,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 830 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:50:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2024-11-24 00:50:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2024-11-24 00:50:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.0013012361743656) internal successors, (1539), 1537 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1539 transitions. [2024-11-24 00:50:47,393 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1539 transitions. Word has length 768 [2024-11-24 00:50:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:47,395 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 1539 transitions. [2024-11-24 00:50:47,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 3.987012987012987) internal successors, (1535), 385 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1539 transitions. [2024-11-24 00:50:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2024-11-24 00:50:47,450 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:47,451 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:47,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:50:47,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 00:50:47,653 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:47,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1785429568, now seen corresponding path program 7 times [2024-11-24 00:50:47,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:47,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083171345] [2024-11-24 00:50:47,654 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:50:47,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 291466 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:29,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:29,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083171345] [2024-11-24 00:53:29,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083171345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:29,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70322763] [2024-11-24 00:53:29,346 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:53:29,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:29,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:29,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:29,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:53:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:33,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 12300 conjuncts, 384 conjuncts are in the unsatisfiable core [2024-11-24 00:53:33,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 291466 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:36,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 291466 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:24,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70322763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:24,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:24,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [385, 385, 385] total 769 [2024-11-24 00:57:24,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628923421] [2024-11-24 00:57:24,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:24,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2024-11-24 00:57:24,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:24,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2024-11-24 00:57:24,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2024-11-24 00:57:24,193 INFO L87 Difference]: Start difference. First operand 1538 states and 1539 transitions. Second operand has 769 states, 769 states have (on average 3.9934980494148244) internal successors, (3071), 769 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:58:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:58:33,617 INFO L93 Difference]: Finished difference Result 3081 states and 3466 transitions. [2024-11-24 00:58:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2024-11-24 00:58:33,620 INFO L78 Accepts]: Start accepts. Automaton has has 769 states, 769 states have (on average 3.9934980494148244) internal successors, (3071), 769 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1536 [2024-11-24 00:58:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:58:33,635 INFO L225 Difference]: With dead ends: 3081 [2024-11-24 00:58:33,636 INFO L226 Difference]: Without dead ends: 3074 [2024-11-24 00:58:33,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 2688 SyntacticMatches, 0 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 299.9s TimeCoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2024-11-24 00:58:33,663 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:58:33,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1592 Invalid, 1543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 00:58:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2024-11-24 00:58:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3074. [2024-11-24 00:58:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 3073 states have (on average 1.0006508298080052) internal successors, (3075), 3073 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:58:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 3075 transitions. [2024-11-24 00:58:33,734 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 3075 transitions. Word has length 1536 [2024-11-24 00:58:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:58:33,736 INFO L471 AbstractCegarLoop]: Abstraction has 3074 states and 3075 transitions. [2024-11-24 00:58:33,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 769 states, 769 states have (on average 3.9934980494148244) internal successors, (3071), 769 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:58:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 3075 transitions. [2024-11-24 00:58:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3073 [2024-11-24 00:58:33,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:58:33,820 INFO L218 NwaCegarLoop]: trace histogram [766, 766, 766, 766, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:58:33,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:58:34,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63e7229a-cf6a-4da5-b4ad-25101096ea61/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:58:34,021 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:58:34,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:58:34,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1531458496, now seen corresponding path program 8 times [2024-11-24 00:58:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:58:34,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171448049] [2024-11-24 00:58:34,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:58:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:58:39,102 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:58:39,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat