./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:50:27,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:50:27,528 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:50:27,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:50:27,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:50:27,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:50:27,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:50:27,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:50:27,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:50:27,572 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:50:27,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:50:27,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:50:27,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:50:27,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:50:27,574 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:50:27,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:50:27,575 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:50:27,576 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:50:27,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:50:27,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:50:27,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:50:27,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:50:27,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:50:27,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:50:27,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:50:27,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:50:27,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:50:27,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:50:27,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:50:27,578 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:50:27,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:50:27,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:50:27,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:50:27,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:50:27,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:50:27,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:50:27,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:50:27,580 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_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 [2024-11-24 00:50:27,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:50:27,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:50:27,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:50:27,899 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:50:27,899 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:50:27,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2024-11-24 00:50:30,911 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/data/018426b2c/6896b310398b4ce98924ed0338ce5d0e/FLAG97ddad581 [2024-11-24 00:50:31,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:50:31,259 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2024-11-24 00:50:31,288 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/data/018426b2c/6896b310398b4ce98924ed0338ce5d0e/FLAG97ddad581 [2024-11-24 00:50:31,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/data/018426b2c/6896b310398b4ce98924ed0338ce5d0e [2024-11-24 00:50:31,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:50:31,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:50:31,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:50:31,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:50:31,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:50:31,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:50:31" (1/1) ... [2024-11-24 00:50:31,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce8afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:31, skipping insertion in model container [2024-11-24 00:50:31,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:50:31" (1/1) ... [2024-11-24 00:50:31,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:50:31,937 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_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i[33021,33034] [2024-11-24 00:50:32,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:50:32,090 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:50:32,142 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_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i[33021,33034] [2024-11-24 00:50:32,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:50:32,296 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:50:32,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32 WrapperNode [2024-11-24 00:50:32,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:50:32,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:50:32,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:50:32,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:50:32,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,425 INFO L138 Inliner]: procedures = 176, calls = 230, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 981 [2024-11-24 00:50:32,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:50:32,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:50:32,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:50:32,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:50:32,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,561 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-11-24 00:50:32,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,591 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,617 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:50:32,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:50:32,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:50:32,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:50:32,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (1/1) ... [2024-11-24 00:50:32,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:50:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:50:32,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:50:32,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:50:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:50:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:50:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:50:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:50:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:50:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:50:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-24 00:50:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-24 00:50:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-24 00:50:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-24 00:50:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:50:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:50:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:50:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:50:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:50:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:50:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:50:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:50:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:50:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:50:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:50:33,002 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:50:33,005 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:50:34,530 INFO L? ?]: Removed 232 outVars from TransFormulas that were not future-live. [2024-11-24 00:50:34,530 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:50:34,546 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:50:34,546 INFO L312 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-24 00:50:34,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:50:34 BoogieIcfgContainer [2024-11-24 00:50:34,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:50:34,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:50:34,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:50:34,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:50:34,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:50:31" (1/3) ... [2024-11-24 00:50:34,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc15193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:50:34, skipping insertion in model container [2024-11-24 00:50:34,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:32" (2/3) ... [2024-11-24 00:50:34,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc15193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:50:34, skipping insertion in model container [2024-11-24 00:50:34,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:50:34" (3/3) ... [2024-11-24 00:50:34,563 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-2.i [2024-11-24 00:50:34,582 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:50:34,583 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test1-2.i that has 4 procedures, 277 locations, 1 initial locations, 25 loop locations, and 1 error locations. [2024-11-24 00:50:34,660 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:50:34,673 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;@1ec938a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:50:34,674 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:50:34,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 256 states have (on average 1.609375) internal successors, (412), 267 states have internal predecessors, (412), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-24 00:50:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 00:50:34,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:34,686 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:34,686 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:34,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:34,691 INFO L85 PathProgramCache]: Analyzing trace with hash -867418799, now seen corresponding path program 1 times [2024-11-24 00:50:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:34,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953165067] [2024-11-24 00:50:34,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:34,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:34,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953165067] [2024-11-24 00:50:34,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953165067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:50:34,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:50:34,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:50:34,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228221294] [2024-11-24 00:50:34,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:50:34,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:50:34,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:34,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:50:34,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:50:34,923 INFO L87 Difference]: Start difference. First operand has 273 states, 256 states have (on average 1.609375) internal successors, (412), 267 states have internal predecessors, (412), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:35,054 INFO L93 Difference]: Finished difference Result 742 states and 1204 transitions. [2024-11-24 00:50:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:50:35,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-24 00:50:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:35,068 INFO L225 Difference]: With dead ends: 742 [2024-11-24 00:50:35,068 INFO L226 Difference]: Without dead ends: 433 [2024-11-24 00:50:35,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:50:35,075 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 278 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:35,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 822 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:50:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-11-24 00:50:35,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 236. [2024-11-24 00:50:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 220 states have (on average 1.440909090909091) internal successors, (317), 230 states have internal predecessors, (317), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-24 00:50:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 343 transitions. [2024-11-24 00:50:35,134 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 343 transitions. Word has length 11 [2024-11-24 00:50:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:35,134 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 343 transitions. [2024-11-24 00:50:35,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 343 transitions. [2024-11-24 00:50:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 00:50:35,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:35,139 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:35,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:50:35,139 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:35,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1519935550, now seen corresponding path program 1 times [2024-11-24 00:50:35,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:35,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859781571] [2024-11-24 00:50:35,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:35,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:35,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:35,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859781571] [2024-11-24 00:50:35,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859781571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:50:35,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:50:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:50:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809426791] [2024-11-24 00:50:35,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:50:35,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:50:35,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:35,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:50:35,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:50:35,874 INFO L87 Difference]: Start difference. First operand 236 states and 343 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:36,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:36,049 INFO L93 Difference]: Finished difference Result 472 states and 686 transitions. [2024-11-24 00:50:36,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:50:36,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-24 00:50:36,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:36,055 INFO L225 Difference]: With dead ends: 472 [2024-11-24 00:50:36,059 INFO L226 Difference]: Without dead ends: 239 [2024-11-24 00:50:36,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:50:36,061 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 88 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:36,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1150 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:50:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-24 00:50:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2024-11-24 00:50:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 220 states have (on average 1.4090909090909092) internal successors, (310), 230 states have internal predecessors, (310), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-24 00:50:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 336 transitions. [2024-11-24 00:50:36,079 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 336 transitions. Word has length 87 [2024-11-24 00:50:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:36,080 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 336 transitions. [2024-11-24 00:50:36,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 336 transitions. [2024-11-24 00:50:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 00:50:36,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:36,083 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:36,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:50:36,083 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:36,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1520225718, now seen corresponding path program 1 times [2024-11-24 00:50:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:36,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321202632] [2024-11-24 00:50:36,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:36,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:36,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:36,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321202632] [2024-11-24 00:50:36,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321202632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:50:36,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:50:36,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:50:36,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579537015] [2024-11-24 00:50:36,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:50:36,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:50:36,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:36,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:50:36,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:50:36,412 INFO L87 Difference]: Start difference. First operand 236 states and 336 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:36,503 INFO L93 Difference]: Finished difference Result 475 states and 678 transitions. [2024-11-24 00:50:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:50:36,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-24 00:50:36,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:36,509 INFO L225 Difference]: With dead ends: 475 [2024-11-24 00:50:36,509 INFO L226 Difference]: Without dead ends: 242 [2024-11-24 00:50:36,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:50:36,510 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 1 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:36,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:50:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-24 00:50:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-24 00:50:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 226 states have (on average 1.3982300884955752) internal successors, (316), 236 states have internal predecessors, (316), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-24 00:50:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 342 transitions. [2024-11-24 00:50:36,542 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 342 transitions. Word has length 87 [2024-11-24 00:50:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:36,543 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 342 transitions. [2024-11-24 00:50:36,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 342 transitions. [2024-11-24 00:50:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 00:50:36,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:36,550 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:36,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:50:36,550 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:36,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1086496632, now seen corresponding path program 1 times [2024-11-24 00:50:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:36,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253175329] [2024-11-24 00:50:36,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:36,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:36,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:36,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253175329] [2024-11-24 00:50:36,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253175329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:50:36,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:50:36,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:50:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747808207] [2024-11-24 00:50:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:50:36,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:50:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:36,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:50:36,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:50:36,853 INFO L87 Difference]: Start difference. First operand 242 states and 342 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:36,932 INFO L93 Difference]: Finished difference Result 618 states and 878 transitions. [2024-11-24 00:50:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:50:36,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-24 00:50:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:36,940 INFO L225 Difference]: With dead ends: 618 [2024-11-24 00:50:36,940 INFO L226 Difference]: Without dead ends: 379 [2024-11-24 00:50:36,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:50:36,945 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 135 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:36,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 660 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:50:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-24 00:50:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-11-24 00:50:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.4104683195592287) internal successors, (512), 373 states have internal predecessors, (512), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-24 00:50:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 538 transitions. [2024-11-24 00:50:36,983 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 538 transitions. Word has length 87 [2024-11-24 00:50:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:36,984 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 538 transitions. [2024-11-24 00:50:36,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 538 transitions. [2024-11-24 00:50:36,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 00:50:36,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:36,992 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:50:36,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:50:36,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:36,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1593359528, now seen corresponding path program 1 times [2024-11-24 00:50:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438113152] [2024-11-24 00:50:36,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:50:37,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:37,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438113152] [2024-11-24 00:50:37,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438113152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:50:37,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981871938] [2024-11-24 00:50:37,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:37,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:50:37,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:50:37,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:50:37,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:50:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:37,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:50:37,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:50:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:50:38,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:50:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:50:38,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981871938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:50:38,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:50:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-24 00:50:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275260983] [2024-11-24 00:50:38,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:50:38,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:50:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:38,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:50:38,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:50:38,278 INFO L87 Difference]: Start difference. First operand 379 states and 538 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-24 00:50:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:38,437 INFO L93 Difference]: Finished difference Result 883 states and 1244 transitions. [2024-11-24 00:50:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:50:38,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 102 [2024-11-24 00:50:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:38,445 INFO L225 Difference]: With dead ends: 883 [2024-11-24 00:50:38,446 INFO L226 Difference]: Without dead ends: 852 [2024-11-24 00:50:38,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:50:38,451 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 1259 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:38,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1628 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:50:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-24 00:50:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2024-11-24 00:50:38,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 827 states have (on average 1.3869407496977026) internal successors, (1147), 837 states have internal predecessors, (1147), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 00:50:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1191 transitions. [2024-11-24 00:50:38,516 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1191 transitions. Word has length 102 [2024-11-24 00:50:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:38,517 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1191 transitions. [2024-11-24 00:50:38,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-24 00:50:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1191 transitions. [2024-11-24 00:50:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-24 00:50:38,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:38,525 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:50:38,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:50:38,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:50:38,727 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:38,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:38,732 INFO L85 PathProgramCache]: Analyzing trace with hash -460248035, now seen corresponding path program 1 times [2024-11-24 00:50:38,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:38,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467301105] [2024-11-24 00:50:38,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:38,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:50:40,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:40,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467301105] [2024-11-24 00:50:40,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467301105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:50:40,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901760893] [2024-11-24 00:50:40,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:40,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:50:40,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:50:40,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:50:40,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:50:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:41,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:50:41,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:50:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:50:41,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:50:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:50:42,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901760893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:50:42,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:50:42,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-24 00:50:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428905032] [2024-11-24 00:50:42,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:50:42,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:50:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:42,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:50:42,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:50:42,546 INFO L87 Difference]: Start difference. First operand 852 states and 1191 transitions. Second operand has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-24 00:50:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:42,964 INFO L93 Difference]: Finished difference Result 2107 states and 2951 transitions. [2024-11-24 00:50:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:50:42,966 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 330 [2024-11-24 00:50:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:42,977 INFO L225 Difference]: With dead ends: 2107 [2024-11-24 00:50:42,977 INFO L226 Difference]: Without dead ends: 2076 [2024-11-24 00:50:42,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:50:42,979 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 4556 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4582 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:42,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4582 Valid, 3221 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:50:42,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2024-11-24 00:50:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2076. [2024-11-24 00:50:43,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2033 states have (on average 1.384653221839646) internal successors, (2815), 2043 states have internal predecessors, (2815), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 00:50:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2895 transitions. [2024-11-24 00:50:43,088 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2895 transitions. Word has length 330 [2024-11-24 00:50:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:43,090 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 2895 transitions. [2024-11-24 00:50:43,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-24 00:50:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2895 transitions. [2024-11-24 00:50:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2024-11-24 00:50:43,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:43,124 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2024-11-24 00:50:43,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:50:43,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:50:43,328 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:43,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1600675719, now seen corresponding path program 2 times [2024-11-24 00:50:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:43,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232934587] [2024-11-24 00:50:43,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:50:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:39,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:02:39,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:02:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 505 proven. 3 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-11-24 01:02:41,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:41,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232934587] [2024-11-24 01:02:41,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232934587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:02:41,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057099289] [2024-11-24 01:02:41,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:02:41,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:41,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:41,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:41,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:03:04,106 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:03:04,106 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:03:04,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 3849 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 01:03:04,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:03:04,248 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 16 treesize of output 17 [2024-11-24 01:03:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 3118 trivial. 0 not checked. [2024-11-24 01:03:05,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:03:05,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057099289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:03:05,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:03:05,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2024-11-24 01:03:05,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011073269] [2024-11-24 01:03:05,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:03:05,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:03:05,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:03:05,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:03:05,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:03:05,671 INFO L87 Difference]: Start difference. First operand 2076 states and 2895 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:03:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:03:09,807 INFO L93 Difference]: Finished difference Result 4097 states and 5708 transitions. [2024-11-24 01:03:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:03:09,808 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 786 [2024-11-24 01:03:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:03:09,819 INFO L225 Difference]: With dead ends: 4097 [2024-11-24 01:03:09,820 INFO L226 Difference]: Without dead ends: 2114 [2024-11-24 01:03:09,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:03:09,824 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 535 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:03:09,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 2164 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 01:03:09,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2024-11-24 01:03:09,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2108. [2024-11-24 01:03:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2065 states have (on average 1.3811138014527844) internal successors, (2852), 2075 states have internal predecessors, (2852), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 01:03:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2932 transitions. [2024-11-24 01:03:09,915 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2932 transitions. Word has length 786 [2024-11-24 01:03:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:03:09,916 INFO L471 AbstractCegarLoop]: Abstraction has 2108 states and 2932 transitions. [2024-11-24 01:03:09,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:03:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2932 transitions. [2024-11-24 01:03:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2024-11-24 01:03:09,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:03:09,944 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 9, 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] [2024-11-24 01:03:10,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:03:10,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34004c6-1a9a-4ea6-9753-79d9f9182f1f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:10,146 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:03:10,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:03:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2065118956, now seen corresponding path program 1 times [2024-11-24 01:03:10,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:03:10,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270725197] [2024-11-24 01:03:10,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms