./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd --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 b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:06:34,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:06:34,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:06:34,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:06:34,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:06:34,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:06:34,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:06:34,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:06:34,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:06:34,985 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:06:34,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:06:34,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:06:34,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:06:34,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:06:34,986 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:06:34,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:06:34,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:06:34,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:06:34,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:06:34,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:06:34,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:06:34,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:06:34,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:06:34,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:06:34,988 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:06:34,988 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:06:34,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:06:34,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:06:34,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:06:34,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:06:34,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:06:34,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:06:34,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:06:34,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:06:34,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:06:34,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:06:34,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:06:34,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:06:34,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:06:34,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:06:34,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:06:34,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:06:34,998 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_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd 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 -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2024-11-13 14:06:35,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:06:35,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:06:35,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:06:35,646 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:06:35,647 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:06:35,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i Unable to find full path for "g++" [2024-11-13 14:06:38,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:06:39,805 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:06:39,806 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2024-11-13 14:06:39,837 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/data/b080cd06b/afe688efc4d040fab014a7fdd40faf8d/FLAG20c0841bc [2024-11-13 14:06:39,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/data/b080cd06b/afe688efc4d040fab014a7fdd40faf8d [2024-11-13 14:06:39,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:06:39,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:06:39,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:06:39,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:06:39,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:06:39,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:06:39" (1/1) ... [2024-11-13 14:06:39,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44be5377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:39, skipping insertion in model container [2024-11-13 14:06:39,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:06:39" (1/1) ... [2024-11-13 14:06:40,004 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:06:40,896 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_a22fb5ac-1ed8-4825-b06a-f0974fd815af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2024-11-13 14:06:41,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:06:41,435 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:06:41,544 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_a22fb5ac-1ed8-4825-b06a-f0974fd815af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2024-11-13 14:06:41,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:06:41,901 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:06:41,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41 WrapperNode [2024-11-13 14:06:41,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:06:41,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:06:41,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:06:41,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:06:41,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:41,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,213 INFO L138 Inliner]: procedures = 177, calls = 506, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3329 [2024-11-13 14:06:42,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:06:42,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:06:42,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:06:42,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:06:42,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,270 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,575 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 106, 372]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 4, 82]. [2024-11-13 14:06:42,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:06:42,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:06:42,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:06:42,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:06:42,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (1/1) ... [2024-11-13 14:06:42,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:06:42,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:42,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:06:42,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:06:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-13 14:06:42,978 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-13 14:06:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:06:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:06:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:06:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:06:42,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:06:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:06:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:06:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:06:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 14:06:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 14:06:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 14:06:42,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 14:06:42,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 14:06:42,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 14:06:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:06:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:06:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:06:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:06:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:06:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:06:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:06:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:06:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:06:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:06:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:06:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:06:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:06:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:06:42,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:06:43,747 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:06:43,751 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:06:51,025 INFO L? ?]: Removed 780 outVars from TransFormulas that were not future-live. [2024-11-13 14:06:51,027 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:06:51,121 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:06:51,121 INFO L316 CfgBuilder]: Removed 151 assume(true) statements. [2024-11-13 14:06:51,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:06:51 BoogieIcfgContainer [2024-11-13 14:06:51,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:06:51,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:06:51,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:06:51,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:06:51,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:06:39" (1/3) ... [2024-11-13 14:06:51,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4eb5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:06:51, skipping insertion in model container [2024-11-13 14:06:51,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:41" (2/3) ... [2024-11-13 14:06:51,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4eb5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:06:51, skipping insertion in model container [2024-11-13 14:06:51,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:06:51" (3/3) ... [2024-11-13 14:06:51,145 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-1.i [2024-11-13 14:06:51,175 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:06:51,178 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test10-1.i that has 6 procedures, 1038 locations, 1 initial locations, 84 loop locations, and 1 error locations. [2024-11-13 14:06:51,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:06:51,403 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;@3a19ab50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:06:51,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:06:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 1030 states, 1011 states have (on average 1.6280909990108803) internal successors, (1646), 1016 states have internal predecessors, (1646), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-13 14:06:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:06:51,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:51,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:51,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:51,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1073730701, now seen corresponding path program 1 times [2024-11-13 14:06:51,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:51,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467512893] [2024-11-13 14:06:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:51,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:51,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467512893] [2024-11-13 14:06:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467512893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:51,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:51,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:06:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171008921] [2024-11-13 14:06:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:51,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:06:51,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:51,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:06:51,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:06:51,941 INFO L87 Difference]: Start difference. First operand has 1030 states, 1011 states have (on average 1.6280909990108803) internal successors, (1646), 1016 states have internal predecessors, (1646), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:52,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:52,189 INFO L93 Difference]: Finished difference Result 2058 states and 3354 transitions. [2024-11-13 14:06:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:06:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 14:06:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:52,257 INFO L225 Difference]: With dead ends: 2058 [2024-11-13 14:06:52,258 INFO L226 Difference]: Without dead ends: 1026 [2024-11-13 14:06:52,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:06:52,285 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:52,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:06:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-13 14:06:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2024-11-13 14:06:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1008 states have (on average 1.4722222222222223) internal successors, (1484), 1013 states have internal predecessors, (1484), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 14:06:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1511 transitions. [2024-11-13 14:06:52,681 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1511 transitions. Word has length 13 [2024-11-13 14:06:52,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:52,682 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1511 transitions. [2024-11-13 14:06:52,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1511 transitions. [2024-11-13 14:06:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 14:06:52,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:52,697 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:52,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:06:52,698 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:52,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:52,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1063528808, now seen corresponding path program 1 times [2024-11-13 14:06:52,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:52,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272623569] [2024-11-13 14:06:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:54,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272623569] [2024-11-13 14:06:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272623569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:54,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:54,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:06:54,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751763153] [2024-11-13 14:06:54,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:54,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:06:54,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:06:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:06:54,090 INFO L87 Difference]: Start difference. First operand 1026 states and 1511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:54,675 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2024-11-13 14:06:54,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:06:54,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 14:06:54,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:54,695 INFO L225 Difference]: With dead ends: 2046 [2024-11-13 14:06:54,700 INFO L226 Difference]: Without dead ends: 1412 [2024-11-13 14:06:54,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:06:54,707 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 548 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:54,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4541 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:06:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-13 14:06:54,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1028. [2024-11-13 14:06:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1010 states have (on average 1.4712871287128713) internal successors, (1486), 1015 states have internal predecessors, (1486), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 14:06:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-11-13 14:06:54,828 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 68 [2024-11-13 14:06:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:54,829 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-11-13 14:06:54,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-11-13 14:06:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-13 14:06:54,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:54,844 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:54,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:06:54,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:54,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:54,845 INFO L85 PathProgramCache]: Analyzing trace with hash -276215522, now seen corresponding path program 1 times [2024-11-13 14:06:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725204022] [2024-11-13 14:06:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:54,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:56,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:56,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725204022] [2024-11-13 14:06:56,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725204022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:56,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:56,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:06:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718233068] [2024-11-13 14:06:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:56,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:06:56,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:06:56,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:06:56,949 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:57,690 INFO L93 Difference]: Finished difference Result 2436 states and 3581 transitions. [2024-11-13 14:06:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:06:57,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-13 14:06:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:57,703 INFO L225 Difference]: With dead ends: 2436 [2024-11-13 14:06:57,703 INFO L226 Difference]: Without dead ends: 1412 [2024-11-13 14:06:57,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:06:57,708 INFO L432 NwaCegarLoop]: 1600 mSDtfsCounter, 546 mSDsluCounter, 5029 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 6629 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:57,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 6629 Invalid, 156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:06:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-13 14:06:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1031. [2024-11-13 14:06:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1013 states have (on average 1.4698914116485686) internal successors, (1489), 1018 states have internal predecessors, (1489), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 14:06:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1516 transitions. [2024-11-13 14:06:57,781 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1516 transitions. Word has length 145 [2024-11-13 14:06:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:57,782 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1516 transitions. [2024-11-13 14:06:57,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1516 transitions. [2024-11-13 14:06:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-13 14:06:57,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:57,791 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:57,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:06:57,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:57,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1306048597, now seen corresponding path program 1 times [2024-11-13 14:06:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997184594] [2024-11-13 14:06:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:58,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:58,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997184594] [2024-11-13 14:06:58,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997184594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:58,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:58,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:06:58,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503275487] [2024-11-13 14:06:58,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:58,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:06:58,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:06:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:06:58,569 INFO L87 Difference]: Start difference. First operand 1031 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:58,839 INFO L93 Difference]: Finished difference Result 2058 states and 3028 transitions. [2024-11-13 14:06:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:06:58,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-13 14:06:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:58,850 INFO L225 Difference]: With dead ends: 2058 [2024-11-13 14:06:58,850 INFO L226 Difference]: Without dead ends: 1034 [2024-11-13 14:06:58,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:06:58,856 INFO L432 NwaCegarLoop]: 1483 mSDtfsCounter, 105 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:58,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 4356 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:06:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-11-13 14:06:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1031. [2024-11-13 14:06:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1013 states have (on average 1.4629812438302072) internal successors, (1482), 1018 states have internal predecessors, (1482), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 14:06:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1509 transitions. [2024-11-13 14:06:58,918 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1509 transitions. Word has length 216 [2024-11-13 14:06:58,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:58,919 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1509 transitions. [2024-11-13 14:06:58,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1509 transitions. [2024-11-13 14:06:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-13 14:06:58,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:58,927 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:58,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:06:58,927 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:58,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash 348362569, now seen corresponding path program 1 times [2024-11-13 14:06:58,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:58,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308839337] [2024-11-13 14:06:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:58,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:59,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308839337] [2024-11-13 14:06:59,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308839337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:59,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:59,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:06:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363428986] [2024-11-13 14:06:59,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:59,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:06:59,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:59,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:06:59,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:06:59,532 INFO L87 Difference]: Start difference. First operand 1031 states and 1509 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:59,779 INFO L93 Difference]: Finished difference Result 2628 states and 3864 transitions. [2024-11-13 14:06:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:06:59,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-13 14:06:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:59,793 INFO L225 Difference]: With dead ends: 2628 [2024-11-13 14:06:59,793 INFO L226 Difference]: Without dead ends: 1604 [2024-11-13 14:06:59,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:06:59,799 INFO L432 NwaCegarLoop]: 1502 mSDtfsCounter, 792 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:59,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2986 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:06:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2024-11-13 14:06:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1445. [2024-11-13 14:06:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1425 states have (on average 1.4694736842105263) internal successors, (2094), 1430 states have internal predecessors, (2094), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 14:06:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2125 transitions. [2024-11-13 14:06:59,932 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2125 transitions. Word has length 216 [2024-11-13 14:06:59,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:59,936 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 2125 transitions. [2024-11-13 14:06:59,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2125 transitions. [2024-11-13 14:06:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-13 14:06:59,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:59,959 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:59,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:06:59,960 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:59,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash 201561981, now seen corresponding path program 1 times [2024-11-13 14:06:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:59,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583830049] [2024-11-13 14:06:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:01,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:07:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:01,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:07:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:07:01,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583830049] [2024-11-13 14:07:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583830049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:01,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:01,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959186511] [2024-11-13 14:07:01,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:01,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:01,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:01,588 INFO L87 Difference]: Start difference. First operand 1445 states and 2125 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:07:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:03,014 INFO L93 Difference]: Finished difference Result 2717 states and 4000 transitions. [2024-11-13 14:07:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:03,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-13 14:07:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:03,036 INFO L225 Difference]: With dead ends: 2717 [2024-11-13 14:07:03,037 INFO L226 Difference]: Without dead ends: 1406 [2024-11-13 14:07:03,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:03,044 INFO L432 NwaCegarLoop]: 1377 mSDtfsCounter, 53 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 5355 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:03,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 5355 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:07:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2024-11-13 14:07:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1403. [2024-11-13 14:07:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1383 states have (on average 1.4584237165582068) internal successors, (2017), 1388 states have internal predecessors, (2017), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 14:07:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2048 transitions. [2024-11-13 14:07:03,160 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2048 transitions. Word has length 231 [2024-11-13 14:07:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:03,163 INFO L471 AbstractCegarLoop]: Abstraction has 1403 states and 2048 transitions. [2024-11-13 14:07:03,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:07:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2048 transitions. [2024-11-13 14:07:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-13 14:07:03,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:03,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:03,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:07:03,172 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:03,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash -284611959, now seen corresponding path program 1 times [2024-11-13 14:07:03,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179766798] [2024-11-13 14:07:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:04,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:07:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:04,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:07:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:07:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:04,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179766798] [2024-11-13 14:07:04,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179766798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:04,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:07:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594036639] [2024-11-13 14:07:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:04,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:04,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:04,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:04,327 INFO L87 Difference]: Start difference. First operand 1403 states and 2048 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:07:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:05,817 INFO L93 Difference]: Finished difference Result 3246 states and 4749 transitions. [2024-11-13 14:07:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:05,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-13 14:07:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:05,839 INFO L225 Difference]: With dead ends: 3246 [2024-11-13 14:07:05,839 INFO L226 Difference]: Without dead ends: 1977 [2024-11-13 14:07:05,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:05,846 INFO L432 NwaCegarLoop]: 1619 mSDtfsCounter, 695 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:05,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 4475 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:07:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-11-13 14:07:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1969. [2024-11-13 14:07:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1943 states have (on average 1.4575398867730314) internal successors, (2832), 1948 states have internal predecessors, (2832), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-13 14:07:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2875 transitions. [2024-11-13 14:07:06,012 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2875 transitions. Word has length 231 [2024-11-13 14:07:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:06,014 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2875 transitions. [2024-11-13 14:07:06,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:07:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2875 transitions. [2024-11-13 14:07:06,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-13 14:07:06,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:06,026 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:06,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:07:06,027 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:06,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1382025486, now seen corresponding path program 1 times [2024-11-13 14:07:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:06,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798579520] [2024-11-13 14:07:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:06,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:07,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:07:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:07,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:07:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:07,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:07:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:07,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:07:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:07,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:07,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798579520] [2024-11-13 14:07:07,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798579520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:07,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:07,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:07:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967993323] [2024-11-13 14:07:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:07,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:07:07,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:07:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:07,278 INFO L87 Difference]: Start difference. First operand 1969 states and 2875 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:07:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:09,667 INFO L93 Difference]: Finished difference Result 4199 states and 6166 transitions. [2024-11-13 14:07:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:09,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2024-11-13 14:07:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:09,690 INFO L225 Difference]: With dead ends: 4199 [2024-11-13 14:07:09,690 INFO L226 Difference]: Without dead ends: 2510 [2024-11-13 14:07:09,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:07:09,697 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 4794 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 4652 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:09,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4805 Valid, 4652 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 14:07:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2024-11-13 14:07:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 1540. [2024-11-13 14:07:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1519 states have (on average 1.446346280447663) internal successors, (2197), 1524 states have internal predecessors, (2197), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 14:07:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2230 transitions. [2024-11-13 14:07:09,945 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2230 transitions. Word has length 246 [2024-11-13 14:07:09,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:09,947 INFO L471 AbstractCegarLoop]: Abstraction has 1540 states and 2230 transitions. [2024-11-13 14:07:09,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:07:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2230 transitions. [2024-11-13 14:07:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-13 14:07:09,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:09,958 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:09,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:07:09,959 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:09,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:09,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1693467968, now seen corresponding path program 1 times [2024-11-13 14:07:09,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:09,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893472292] [2024-11-13 14:07:09,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:09,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:11,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:07:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:11,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:07:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:11,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:07:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:11,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:07:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 14:07:11,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:11,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893472292] [2024-11-13 14:07:11,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893472292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:11,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411996491] [2024-11-13 14:07:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:11,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:11,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:11,158 INFO L87 Difference]: Start difference. First operand 1540 states and 2230 transitions. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:07:12,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:12,660 INFO L93 Difference]: Finished difference Result 2418 states and 3540 transitions. [2024-11-13 14:07:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:12,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-13 14:07:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:12,680 INFO L225 Difference]: With dead ends: 2418 [2024-11-13 14:07:12,680 INFO L226 Difference]: Without dead ends: 1501 [2024-11-13 14:07:12,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:12,685 INFO L432 NwaCegarLoop]: 1290 mSDtfsCounter, 56 mSDsluCounter, 3720 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:12,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 5010 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:07:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2024-11-13 14:07:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1498. [2024-11-13 14:07:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1477 states have (on average 1.4353419092755586) internal successors, (2120), 1482 states have internal predecessors, (2120), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 14:07:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2153 transitions. [2024-11-13 14:07:12,818 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2153 transitions. Word has length 256 [2024-11-13 14:07:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:12,822 INFO L471 AbstractCegarLoop]: Abstraction has 1498 states and 2153 transitions. [2024-11-13 14:07:12,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:07:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2153 transitions. [2024-11-13 14:07:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-13 14:07:12,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:12,831 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:12,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:07:12,832 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:12,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash 379662318, now seen corresponding path program 1 times [2024-11-13 14:07:12,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024314642] [2024-11-13 14:07:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:12,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:13,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:07:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:13,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:07:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:13,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:07:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:13,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:07:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 14:07:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024314642] [2024-11-13 14:07:13,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024314642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:13,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:13,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:07:13,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542279308] [2024-11-13 14:07:13,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:13,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:13,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:13,812 INFO L87 Difference]: Start difference. First operand 1498 states and 2153 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:07:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:15,083 INFO L93 Difference]: Finished difference Result 2351 states and 3423 transitions. [2024-11-13 14:07:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-13 14:07:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:15,100 INFO L225 Difference]: With dead ends: 2351 [2024-11-13 14:07:15,100 INFO L226 Difference]: Without dead ends: 1501 [2024-11-13 14:07:15,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:15,105 INFO L432 NwaCegarLoop]: 1305 mSDtfsCounter, 25 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:15,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3762 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:07:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2024-11-13 14:07:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1498. [2024-11-13 14:07:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1477 states have (on average 1.4333107650643195) internal successors, (2117), 1482 states have internal predecessors, (2117), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 14:07:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2150 transitions. [2024-11-13 14:07:15,228 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2150 transitions. Word has length 256 [2024-11-13 14:07:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:15,230 INFO L471 AbstractCegarLoop]: Abstraction has 1498 states and 2150 transitions. [2024-11-13 14:07:15,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:07:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2150 transitions. [2024-11-13 14:07:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-13 14:07:15,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:15,240 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:15,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:07:15,240 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:15,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1678207796, now seen corresponding path program 1 times [2024-11-13 14:07:15,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:15,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330598759] [2024-11-13 14:07:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:15,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:18,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:07:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:18,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:07:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:18,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:07:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:18,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:07:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:18,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:18,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330598759] [2024-11-13 14:07:18,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330598759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:18,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158982974] [2024-11-13 14:07:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:18,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:18,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:18,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:18,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:07:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:19,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:07:19,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:20,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:07:20,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:07:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:20,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:07:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158982974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:20,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:07:20,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-13 14:07:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660351435] [2024-11-13 14:07:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:20,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:07:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:07:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:07:20,986 INFO L87 Difference]: Start difference. First operand 1498 states and 2150 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:07:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:22,144 INFO L93 Difference]: Finished difference Result 2702 states and 3877 transitions. [2024-11-13 14:07:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:07:22,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-13 14:07:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:22,160 INFO L225 Difference]: With dead ends: 2702 [2024-11-13 14:07:22,160 INFO L226 Difference]: Without dead ends: 1823 [2024-11-13 14:07:22,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 252 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:07:22,166 INFO L432 NwaCegarLoop]: 1276 mSDtfsCounter, 1346 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 5306 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:22,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 5306 Invalid, 336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:07:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2024-11-13 14:07:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1669. [2024-11-13 14:07:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1638 states have (on average 1.4242979242979243) internal successors, (2333), 1647 states have internal predecessors, (2333), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 17 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2380 transitions. [2024-11-13 14:07:22,377 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2380 transitions. Word has length 256 [2024-11-13 14:07:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:22,378 INFO L471 AbstractCegarLoop]: Abstraction has 1669 states and 2380 transitions. [2024-11-13 14:07:22,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:07:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2380 transitions. [2024-11-13 14:07:22,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-13 14:07:22,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:22,390 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:22,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:07:22,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:22,595 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:22,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 95428842, now seen corresponding path program 1 times [2024-11-13 14:07:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:22,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353866347] [2024-11-13 14:07:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:22,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:07:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:07:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:07:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:07:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:25,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:25,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353866347] [2024-11-13 14:07:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353866347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073816159] [2024-11-13 14:07:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:25,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:25,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:25,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:07:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:27,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:07:27,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:27,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:07:28,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:07:28,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:07:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:28,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073816159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:29,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 13 [2024-11-13 14:07:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560225955] [2024-11-13 14:07:29,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:29,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:07:29,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:07:29,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:07:29,291 INFO L87 Difference]: Start difference. First operand 1669 states and 2380 transitions. Second operand has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 14:07:30,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 14:07:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:33,487 INFO L93 Difference]: Finished difference Result 4138 states and 5885 transitions. [2024-11-13 14:07:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:07:33,489 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 333 [2024-11-13 14:07:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:33,512 INFO L225 Difference]: With dead ends: 4138 [2024-11-13 14:07:33,513 INFO L226 Difference]: Without dead ends: 2749 [2024-11-13 14:07:33,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 663 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:07:33,520 INFO L432 NwaCegarLoop]: 1279 mSDtfsCounter, 3183 mSDsluCounter, 10515 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 11794 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:33,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3221 Valid, 11794 Invalid, 844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 14:07:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2024-11-13 14:07:33,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2410. [2024-11-13 14:07:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2367 states have (on average 1.4068441064638784) internal successors, (3330), 2376 states have internal predecessors, (3330), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-13 14:07:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 3399 transitions. [2024-11-13 14:07:33,743 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 3399 transitions. Word has length 333 [2024-11-13 14:07:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:33,745 INFO L471 AbstractCegarLoop]: Abstraction has 2410 states and 3399 transitions. [2024-11-13 14:07:33,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 14:07:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 3399 transitions. [2024-11-13 14:07:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2024-11-13 14:07:33,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:33,790 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:33,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:07:33,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:33,991 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:33,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1751702723, now seen corresponding path program 1 times [2024-11-13 14:07:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367901613] [2024-11-13 14:07:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:33,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:46,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:07:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:46,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:07:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:46,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:07:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:46,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:07:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:46,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:46,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367901613] [2024-11-13 14:07:46,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367901613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:46,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852978595] [2024-11-13 14:07:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:46,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:46,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:46,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:46,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:07:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:49,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 3719 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:07:49,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:49,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:07:50,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:07:51,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:07:51,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:07:52,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:07:52,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:07:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:52,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:07:54,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852978595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:54,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:54,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 22 [2024-11-13 14:07:54,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913372425] [2024-11-13 14:07:54,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:54,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:07:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:07:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:07:54,754 INFO L87 Difference]: Start difference. First operand 2410 states and 3399 transitions. Second operand has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 14:07:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:58,584 INFO L93 Difference]: Finished difference Result 6148 states and 8696 transitions. [2024-11-13 14:07:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 14:07:58,586 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 777 [2024-11-13 14:07:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:58,635 INFO L225 Difference]: With dead ends: 6148 [2024-11-13 14:07:58,636 INFO L226 Difference]: Without dead ends: 4759 [2024-11-13 14:07:58,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1550 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:07:58,642 INFO L432 NwaCegarLoop]: 1279 mSDtfsCounter, 6895 mSDsluCounter, 13986 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6981 SdHoareTripleChecker+Valid, 15265 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:58,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6981 Valid, 15265 Invalid, 1002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 14:07:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2024-11-13 14:07:58,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 4420. [2024-11-13 14:07:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4353 states have (on average 1.3935217091660923) internal successors, (6066), 4362 states have internal predecessors, (6066), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-13 14:07:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 6183 transitions. [2024-11-13 14:07:58,979 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 6183 transitions. Word has length 777 [2024-11-13 14:07:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:58,981 INFO L471 AbstractCegarLoop]: Abstraction has 4420 states and 6183 transitions. [2024-11-13 14:07:58,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 14:07:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 6183 transitions. [2024-11-13 14:07:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-13 14:07:59,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:59,206 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:59,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:07:59,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:07:59,412 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:59,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash -645584395, now seen corresponding path program 2 times [2024-11-13 14:07:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:59,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355818400] [2024-11-13 14:07:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:59,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:15,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:08:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:15,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:08:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:15,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:08:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:15,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:08:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-13 14:08:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355818400] [2024-11-13 14:08:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355818400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579453748] [2024-11-13 14:08:15,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:08:15,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:15,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:15,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:15,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:08:18,135 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:08:18,138 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:08:18,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:08:18,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:18,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:08:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7438 trivial. 0 not checked. [2024-11-13 14:08:19,886 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:19,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579453748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:19,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:08:19,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-13 14:08:19,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53770974] [2024-11-13 14:08:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:19,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:08:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:19,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:08:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:08:19,892 INFO L87 Difference]: Start difference. First operand 4420 states and 6183 transitions. Second operand has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:08:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:22,331 INFO L93 Difference]: Finished difference Result 5282 states and 7462 transitions. [2024-11-13 14:08:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:08:22,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1665 [2024-11-13 14:08:22,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:22,377 INFO L225 Difference]: With dead ends: 5282 [2024-11-13 14:08:22,377 INFO L226 Difference]: Without dead ends: 4426 [2024-11-13 14:08:22,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1666 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:08:22,385 INFO L432 NwaCegarLoop]: 1312 mSDtfsCounter, 395 mSDsluCounter, 6988 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 8300 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:22,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 8300 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:08:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2024-11-13 14:08:22,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4423. [2024-11-13 14:08:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4423 states, 4356 states have (on average 1.393250688705234) internal successors, (6069), 4365 states have internal predecessors, (6069), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-13 14:08:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 6186 transitions. [2024-11-13 14:08:22,662 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 6186 transitions. Word has length 1665 [2024-11-13 14:08:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:22,669 INFO L471 AbstractCegarLoop]: Abstraction has 4423 states and 6186 transitions. [2024-11-13 14:08:22,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:08:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 6186 transitions. [2024-11-13 14:08:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-13 14:08:22,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:22,719 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:22,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:22,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:22,924 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:22,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1068110867, now seen corresponding path program 1 times [2024-11-13 14:08:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:22,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217930335] [2024-11-13 14:08:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:27,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:08:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:27,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:08:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:27,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:08:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:27,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:08:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7438 trivial. 0 not checked. [2024-11-13 14:08:27,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:27,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217930335] [2024-11-13 14:08:27,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217930335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:27,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933790106] [2024-11-13 14:08:27,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:27,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:08:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:08:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:27,724 INFO L87 Difference]: Start difference. First operand 4423 states and 6186 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:08:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:28,798 INFO L93 Difference]: Finished difference Result 5291 states and 7515 transitions. [2024-11-13 14:08:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:08:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1665 [2024-11-13 14:08:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:28,826 INFO L225 Difference]: With dead ends: 5291 [2024-11-13 14:08:28,826 INFO L226 Difference]: Without dead ends: 4423 [2024-11-13 14:08:28,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:28,832 INFO L432 NwaCegarLoop]: 1290 mSDtfsCounter, 32 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5007 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:28,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 5007 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:08:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2024-11-13 14:08:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4414. [2024-11-13 14:08:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4414 states, 4347 states have (on average 1.3936047849091326) internal successors, (6058), 4356 states have internal predecessors, (6058), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-13 14:08:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 6175 transitions. [2024-11-13 14:08:29,061 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 6175 transitions. Word has length 1665 [2024-11-13 14:08:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:29,064 INFO L471 AbstractCegarLoop]: Abstraction has 4414 states and 6175 transitions. [2024-11-13 14:08:29,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:08:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 6175 transitions. [2024-11-13 14:08:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2024-11-13 14:08:29,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:29,117 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:29,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:08:29,118 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:29,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1436665155, now seen corresponding path program 1 times [2024-11-13 14:08:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:29,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499099067] [2024-11-13 14:08:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:42,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:08:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:42,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:08:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:43,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:08:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:43,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:08:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-13 14:08:43,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:43,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499099067] [2024-11-13 14:08:43,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499099067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:43,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172468513] [2024-11-13 14:08:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:43,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:43,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:43,027 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:43,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:08:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:48,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 7908 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 14:08:48,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:48,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:08:49,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:50,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:50,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:51,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:51,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:52,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:52,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:53,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:53,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:54,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:54,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:08:54,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:08:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 7414 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:08:54,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 7414 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:08:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172468513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:58,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:58,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 15] total 33 [2024-11-13 14:08:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742853176] [2024-11-13 14:08:58,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:58,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 14:08:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:58,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 14:08:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:08:58,953 INFO L87 Difference]: Start difference. First operand 4414 states and 6175 transitions. Second operand has 33 states, 33 states have (on average 102.78787878787878) internal successors, (3392), 32 states have internal predecessors, (3392), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 14:09:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:04,284 INFO L93 Difference]: Finished difference Result 7314 states and 10277 transitions. [2024-11-13 14:09:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-13 14:09:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 102.78787878787878) internal successors, (3392), 32 states have internal predecessors, (3392), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1666 [2024-11-13 14:09:04,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:04,315 INFO L225 Difference]: With dead ends: 7314 [2024-11-13 14:09:04,316 INFO L226 Difference]: Without dead ends: 6425 [2024-11-13 14:09:04,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3397 GetRequests, 3311 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2054 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1677, Invalid=4803, Unknown=0, NotChecked=0, Total=6480 [2024-11-13 14:09:04,323 INFO L432 NwaCegarLoop]: 1244 mSDtfsCounter, 16524 mSDsluCounter, 16470 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16687 SdHoareTripleChecker+Valid, 17714 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:04,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16687 Valid, 17714 Invalid, 1371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 14:09:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6425 states. [2024-11-13 14:09:04,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6425 to 6416. [2024-11-13 14:09:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6416 states, 6310 states have (on average 1.3741679873217116) internal successors, (8671), 6319 states have internal predecessors, (8671), 98 states have call successors, (98), 7 states have call predecessors, (98), 7 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-13 14:09:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6416 states to 6416 states and 8866 transitions. [2024-11-13 14:09:04,718 INFO L78 Accepts]: Start accepts. Automaton has 6416 states and 8866 transitions. Word has length 1666 [2024-11-13 14:09:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:04,721 INFO L471 AbstractCegarLoop]: Abstraction has 6416 states and 8866 transitions. [2024-11-13 14:09:04,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 102.78787878787878) internal successors, (3392), 32 states have internal predecessors, (3392), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 14:09:04,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6416 states and 8866 transitions. [2024-11-13 14:09:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2668 [2024-11-13 14:09:04,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:04,894 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:04,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:09:05,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:05,096 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:09:05,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:05,098 INFO L85 PathProgramCache]: Analyzing trace with hash 436446825, now seen corresponding path program 2 times [2024-11-13 14:09:05,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:05,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462778461] [2024-11-13 14:09:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:57,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:11:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:57,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:11:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:57,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:11:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:57,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:11:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 24455 backedges. 0 proven. 24431 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:11:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462778461] [2024-11-13 14:11:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462778461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:57,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173877093] [2024-11-13 14:11:57,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:11:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:57,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:57,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:12:02,528 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:12:02,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:12:02,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:12:02,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 24455 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24455 trivial. 0 not checked. [2024-11-13 14:12:02,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:12:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173877093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:02,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:12:02,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [54] total 56 [2024-11-13 14:12:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151414376] [2024-11-13 14:12:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:02,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:12:02,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:02,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:12:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1059, Invalid=2021, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 14:12:02,727 INFO L87 Difference]: Start difference. First operand 6416 states and 8866 transitions. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:12:02,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:02,912 INFO L93 Difference]: Finished difference Result 7272 states and 10136 transitions. [2024-11-13 14:12:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:12:02,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 2667 [2024-11-13 14:12:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:02,934 INFO L225 Difference]: With dead ends: 7272 [2024-11-13 14:12:02,934 INFO L226 Difference]: Without dead ends: 6416 [2024-11-13 14:12:02,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2741 GetRequests, 2687 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1059, Invalid=2021, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 14:12:02,939 INFO L432 NwaCegarLoop]: 1322 mSDtfsCounter, 12 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:02,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3841 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:12:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6416 states. [2024-11-13 14:12:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6416 to 6416. [2024-11-13 14:12:03,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6416 states, 6310 states have (on average 1.3740095087163233) internal successors, (8670), 6319 states have internal predecessors, (8670), 98 states have call successors, (98), 7 states have call predecessors, (98), 7 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-13 14:12:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6416 states to 6416 states and 8865 transitions. [2024-11-13 14:12:03,104 INFO L78 Accepts]: Start accepts. Automaton has 6416 states and 8865 transitions. Word has length 2667 [2024-11-13 14:12:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:03,106 INFO L471 AbstractCegarLoop]: Abstraction has 6416 states and 8865 transitions. [2024-11-13 14:12:03,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:12:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6416 states and 8865 transitions. [2024-11-13 14:12:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2669 [2024-11-13 14:12:03,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:03,251 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:03,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:12:03,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fb5ac-1ed8-4825-b06a-f0974fd815af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:12:03,455 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:12:03,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2127763790, now seen corresponding path program 1 times [2024-11-13 14:12:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:03,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720413591] [2024-11-13 14:12:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:22,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:12:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:22,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:12:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:22,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:12:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:22,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:12:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24455 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24455 trivial. 0 not checked. [2024-11-13 14:12:22,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:22,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720413591] [2024-11-13 14:12:22,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720413591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:22,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:12:22,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:12:22,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548621709] [2024-11-13 14:12:22,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:22,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:12:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:12:22,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:12:22,119 INFO L87 Difference]: Start difference. First operand 6416 states and 8865 transitions. Second operand has 8 states, 8 states have (on average 30.625) internal successors, (245), 7 states have internal predecessors, (245), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:12:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:23,858 INFO L93 Difference]: Finished difference Result 7281 states and 10228 transitions. [2024-11-13 14:12:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:12:23,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 7 states have internal predecessors, (245), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 2668 [2024-11-13 14:12:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:23,893 INFO L225 Difference]: With dead ends: 7281 [2024-11-13 14:12:23,894 INFO L226 Difference]: Without dead ends: 6428 [2024-11-13 14:12:23,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:12:23,901 INFO L432 NwaCegarLoop]: 1295 mSDtfsCounter, 26 mSDsluCounter, 7237 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 8532 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:23,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 8532 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 14:12:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2024-11-13 14:12:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 6419. [2024-11-13 14:12:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6419 states, 6313 states have (on average 1.3738317757009346) internal successors, (8673), 6322 states have internal predecessors, (8673), 98 states have call successors, (98), 7 states have call predecessors, (98), 7 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-13 14:12:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 8868 transitions. [2024-11-13 14:12:24,193 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 8868 transitions. Word has length 2668 [2024-11-13 14:12:24,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:24,197 INFO L471 AbstractCegarLoop]: Abstraction has 6419 states and 8868 transitions. [2024-11-13 14:12:24,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 7 states have internal predecessors, (245), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:12:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 8868 transitions. [2024-11-13 14:12:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2670 [2024-11-13 14:12:24,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:24,325 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:24,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 14:12:24,326 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:12:24,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1895043856, now seen corresponding path program 1 times [2024-11-13 14:12:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596656701] [2024-11-13 14:12:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:37,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:12:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:37,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 14:12:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:37,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-13 14:12:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:37,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:12:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 24455 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24455 trivial. 0 not checked. [2024-11-13 14:12:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596656701] [2024-11-13 14:12:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596656701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:37,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:12:37,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:12:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252746296] [2024-11-13 14:12:37,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:37,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:12:37,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:12:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:12:37,438 INFO L87 Difference]: Start difference. First operand 6419 states and 8868 transitions. Second operand has 9 states, 9 states have (on average 27.333333333333332) internal successors, (246), 8 states have internal predecessors, (246), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:12:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:38,790 INFO L93 Difference]: Finished difference Result 7279 states and 10223 transitions. [2024-11-13 14:12:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:12:38,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 27.333333333333332) internal successors, (246), 8 states have internal predecessors, (246), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 2669 [2024-11-13 14:12:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:38,811 INFO L225 Difference]: With dead ends: 7279 [2024-11-13 14:12:38,811 INFO L226 Difference]: Without dead ends: 6433 [2024-11-13 14:12:38,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:12:38,815 INFO L432 NwaCegarLoop]: 1285 mSDtfsCounter, 30 mSDsluCounter, 7250 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 8535 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:38,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 8535 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:12:38,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2024-11-13 14:12:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 6423. [2024-11-13 14:12:39,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 6317 states have (on average 1.3737533639385784) internal successors, (8678), 6326 states have internal predecessors, (8678), 98 states have call successors, (98), 7 states have call predecessors, (98), 7 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-13 14:12:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 8873 transitions. [2024-11-13 14:12:39,104 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 8873 transitions. Word has length 2669 [2024-11-13 14:12:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:39,108 INFO L471 AbstractCegarLoop]: Abstraction has 6423 states and 8873 transitions. [2024-11-13 14:12:39,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.333333333333332) internal successors, (246), 8 states have internal predecessors, (246), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:12:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 8873 transitions. [2024-11-13 14:12:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2670 [2024-11-13 14:12:39,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:39,251 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:39,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:12:39,251 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:12:39,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2083239284, now seen corresponding path program 1 times [2024-11-13 14:12:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:39,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744542306] [2024-11-13 14:12:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:39,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat