./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB --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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:42:19,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:42:19,903 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:42:19,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:42:19,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:42:19,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:42:19,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:42:19,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:42:19,965 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:42:19,965 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:42:19,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:42:19,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:42:19,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:42:19,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:42:19,969 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:42:19,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:42:19,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:42:19,969 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:42:19,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:42:19,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:42:19,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:42:19,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:42:19,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:42:19,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:42:19,970 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:42:19,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:42:19,971 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:42:19,971 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:42:19,971 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:42:19,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:42:19,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:42:19,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:42:19,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:19,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:42:19,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:42:19,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:42:19,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:42:19,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:19,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:42:19,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:42:19,975 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:42:19,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:42:19,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:42:19,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:42:19,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:42:19,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:42:19,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:42:19,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:42:19,975 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_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2024-11-28 03:42:20,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:42:20,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:42:20,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:42:20,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:42:20,395 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:42:20,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2024-11-28 03:42:23,677 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/data/350b76f88/19c10f624a664cecbde47aa2adb32228/FLAG3973da8d7 [2024-11-28 03:42:24,167 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:42:24,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2024-11-28 03:42:24,199 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/data/350b76f88/19c10f624a664cecbde47aa2adb32228/FLAG3973da8d7 [2024-11-28 03:42:24,228 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/data/350b76f88/19c10f624a664cecbde47aa2adb32228 [2024-11-28 03:42:24,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:42:24,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:42:24,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:42:24,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:42:24,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:42:24,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:42:24" (1/1) ... [2024-11-28 03:42:24,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af9aa24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:24, skipping insertion in model container [2024-11-28 03:42:24,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:42:24" (1/1) ... [2024-11-28 03:42:24,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:42:24,832 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_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2024-11-28 03:42:25,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:42:25,066 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:42:25,129 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_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2024-11-28 03:42:25,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:42:25,304 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:42:25,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25 WrapperNode [2024-11-28 03:42:25,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:42:25,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:42:25,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:42:25,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:42:25,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,434 INFO L138 Inliner]: procedures = 176, calls = 335, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1552 [2024-11-28 03:42:25,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:42:25,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:42:25,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:42:25,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:42:25,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,573 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2024-11-28 03:42:25,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:42:25,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:42:25,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:42:25,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:42:25,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (1/1) ... [2024-11-28 03:42:25,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:25,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:42:25,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:42:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:42:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:42:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:42:25,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:42:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:42:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:42:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 03:42:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 03:42:25,780 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 03:42:25,780 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:42:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:42:25,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:42:26,110 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:42:26,114 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:42:28,867 INFO L? ?]: Removed 387 outVars from TransFormulas that were not future-live. [2024-11-28 03:42:28,867 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:42:28,894 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:42:28,895 INFO L312 CfgBuilder]: Removed 34 assume(true) statements. [2024-11-28 03:42:28,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:42:28 BoogieIcfgContainer [2024-11-28 03:42:28,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:42:28,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:42:28,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:42:28,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:42:28,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:42:24" (1/3) ... [2024-11-28 03:42:28,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0fe57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:42:28, skipping insertion in model container [2024-11-28 03:42:28,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:25" (2/3) ... [2024-11-28 03:42:28,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0fe57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:42:28, skipping insertion in model container [2024-11-28 03:42:28,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:42:28" (3/3) ... [2024-11-28 03:42:28,917 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2024-11-28 03:42:28,937 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:42:28,939 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test4-1.i that has 4 procedures, 436 locations, 1 initial locations, 36 loop locations, and 1 error locations. [2024-11-28 03:42:29,047 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:42:29,064 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;@61274698, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:42:29,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:42:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 432 states, 412 states have (on average 1.6067961165048543) internal successors, (662), 423 states have internal predecessors, (662), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:42:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:42:29,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:29,086 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:29,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:29,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1452327780, now seen corresponding path program 1 times [2024-11-28 03:42:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:29,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290606744] [2024-11-28 03:42:29,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:29,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290606744] [2024-11-28 03:42:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290606744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:29,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:29,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:42:29,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934327462] [2024-11-28 03:42:29,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:29,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:42:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:29,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:42:29,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:42:29,378 INFO L87 Difference]: Start difference. First operand has 432 states, 412 states have (on average 1.6067961165048543) internal successors, (662), 423 states have internal predecessors, (662), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2024-11-28 03:42:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:29,510 INFO L93 Difference]: Finished difference Result 862 states and 1396 transitions. [2024-11-28 03:42:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:42:29,513 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2024-11-28 03:42:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:29,531 INFO L225 Difference]: With dead ends: 862 [2024-11-28 03:42:29,531 INFO L226 Difference]: Without dead ends: 428 [2024-11-28 03:42:29,536 INFO L434 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 [2024-11-28 03:42:29,540 INFO L435 NwaCegarLoop]: 626 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, 626 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 [2024-11-28 03:42:29,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:42:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-28 03:42:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-11-28 03:42:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 409 states have (on average 1.4425427872860637) internal successors, (590), 419 states have internal predecessors, (590), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:42:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 622 transitions. [2024-11-28 03:42:29,635 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 622 transitions. Word has length 11 [2024-11-28 03:42:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:29,636 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 622 transitions. [2024-11-28 03:42:29,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2024-11-28 03:42:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 622 transitions. [2024-11-28 03:42:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:42:29,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:29,637 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:29,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:42:29,638 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:29,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:29,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1382262411, now seen corresponding path program 1 times [2024-11-28 03:42:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122100669] [2024-11-28 03:42:29,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:29,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:29,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122100669] [2024-11-28 03:42:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122100669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:29,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:42:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584293866] [2024-11-28 03:42:29,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:29,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:42:29,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:29,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:42:29,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:42:29,737 INFO L87 Difference]: Start difference. First operand 428 states and 622 transitions. 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) [2024-11-28 03:42:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:29,869 INFO L93 Difference]: Finished difference Result 850 states and 1238 transitions. [2024-11-28 03:42:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:42:29,874 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 [2024-11-28 03:42:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:29,883 INFO L225 Difference]: With dead ends: 850 [2024-11-28 03:42:29,884 INFO L226 Difference]: Without dead ends: 819 [2024-11-28 03:42:29,888 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 [2024-11-28 03:42:29,889 INFO L435 NwaCegarLoop]: 713 mSDtfsCounter, 552 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:29,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1330 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:42:29,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-28 03:42:29,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 429. [2024-11-28 03:42:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 410 states have (on average 1.4414634146341463) internal successors, (591), 420 states have internal predecessors, (591), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:42:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 623 transitions. [2024-11-28 03:42:29,966 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 623 transitions. Word has length 11 [2024-11-28 03:42:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:29,967 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 623 transitions. [2024-11-28 03:42:29,967 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) [2024-11-28 03:42:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 623 transitions. [2024-11-28 03:42:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:42:29,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:29,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:29,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:42:29,979 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:29,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1119092946, now seen corresponding path program 1 times [2024-11-28 03:42:29,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:29,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324560691] [2024-11-28 03:42:29,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:29,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:31,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:31,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324560691] [2024-11-28 03:42:31,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324560691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:31,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:31,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:42:31,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317959638] [2024-11-28 03:42:31,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:31,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:42:31,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:31,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:42:31,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:42:31,303 INFO L87 Difference]: Start difference. First operand 429 states and 623 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2024-11-28 03:42:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:31,498 INFO L93 Difference]: Finished difference Result 858 states and 1246 transitions. [2024-11-28 03:42:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:42:31,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 158 [2024-11-28 03:42:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:31,510 INFO L225 Difference]: With dead ends: 858 [2024-11-28 03:42:31,510 INFO L226 Difference]: Without dead ends: 432 [2024-11-28 03:42:31,512 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 [2024-11-28 03:42:31,516 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 109 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:31,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1688 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:42:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-28 03:42:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 429. [2024-11-28 03:42:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 410 states have (on average 1.424390243902439) internal successors, (584), 420 states have internal predecessors, (584), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:42:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 616 transitions. [2024-11-28 03:42:31,557 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 616 transitions. Word has length 158 [2024-11-28 03:42:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:31,557 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 616 transitions. [2024-11-28 03:42:31,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2024-11-28 03:42:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 616 transitions. [2024-11-28 03:42:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:42:31,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:31,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:31,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:42:31,569 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:31,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash 729192122, now seen corresponding path program 1 times [2024-11-28 03:42:31,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:31,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454918552] [2024-11-28 03:42:31,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:31,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:32,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:32,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454918552] [2024-11-28 03:42:32,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454918552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:32,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:32,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:42:32,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609915949] [2024-11-28 03:42:32,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:32,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:42:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:32,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:42:32,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:42:32,156 INFO L87 Difference]: Start difference. First operand 429 states and 616 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2024-11-28 03:42:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:32,266 INFO L93 Difference]: Finished difference Result 861 states and 1238 transitions. [2024-11-28 03:42:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:42:32,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 158 [2024-11-28 03:42:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:32,271 INFO L225 Difference]: With dead ends: 861 [2024-11-28 03:42:32,274 INFO L226 Difference]: Without dead ends: 435 [2024-11-28 03:42:32,275 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 [2024-11-28 03:42:32,276 INFO L435 NwaCegarLoop]: 609 mSDtfsCounter, 1 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1196 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 [2024-11-28 03:42:32,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1196 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:42:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-11-28 03:42:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2024-11-28 03:42:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 416 states have (on average 1.4182692307692308) internal successors, (590), 426 states have internal predecessors, (590), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:42:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 622 transitions. [2024-11-28 03:42:32,312 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 622 transitions. Word has length 158 [2024-11-28 03:42:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:32,312 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 622 transitions. [2024-11-28 03:42:32,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2024-11-28 03:42:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 622 transitions. [2024-11-28 03:42:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:42:32,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:32,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:32,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:42:32,319 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:32,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1677244088, now seen corresponding path program 1 times [2024-11-28 03:42:32,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:32,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412498034] [2024-11-28 03:42:32,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:32,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:32,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:32,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412498034] [2024-11-28 03:42:32,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412498034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:32,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:32,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:42:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038791619] [2024-11-28 03:42:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:32,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:42:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:32,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:42:32,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:42:32,748 INFO L87 Difference]: Start difference. First operand 435 states and 622 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2024-11-28 03:42:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:32,852 INFO L93 Difference]: Finished difference Result 1004 states and 1438 transitions. [2024-11-28 03:42:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:42:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 158 [2024-11-28 03:42:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:32,861 INFO L225 Difference]: With dead ends: 1004 [2024-11-28 03:42:32,861 INFO L226 Difference]: Without dead ends: 572 [2024-11-28 03:42:32,865 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 [2024-11-28 03:42:32,866 INFO L435 NwaCegarLoop]: 614 mSDtfsCounter, 135 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:32,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1221 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:42:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-28 03:42:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-28 03:42:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 553 states have (on average 1.4213381555153708) internal successors, (786), 563 states have internal predecessors, (786), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:42:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 818 transitions. [2024-11-28 03:42:32,917 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 818 transitions. Word has length 158 [2024-11-28 03:42:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:32,918 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 818 transitions. [2024-11-28 03:42:32,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2024-11-28 03:42:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 818 transitions. [2024-11-28 03:42:32,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 03:42:32,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:32,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:32,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:42:32,947 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:32,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash 684584200, now seen corresponding path program 1 times [2024-11-28 03:42:32,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:32,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276759075] [2024-11-28 03:42:32,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:32,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:42:33,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:33,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276759075] [2024-11-28 03:42:33,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276759075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:33,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:33,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:42:33,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592508979] [2024-11-28 03:42:33,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:33,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:42:33,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:33,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:42:33,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:42:33,641 INFO L87 Difference]: Start difference. First operand 572 states and 818 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:42:33,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:33,812 INFO L93 Difference]: Finished difference Result 961 states and 1370 transitions. [2024-11-28 03:42:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:42:33,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (3), 2 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 173 [2024-11-28 03:42:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:33,817 INFO L225 Difference]: With dead ends: 961 [2024-11-28 03:42:33,819 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 03:42:33,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:42:33,823 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 30 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:33,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1517 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:42:33,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 03:42:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 03:42:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 510 states have (on average 1.388235294117647) internal successors, (708), 520 states have internal predecessors, (708), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:42:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 740 transitions. [2024-11-28 03:42:33,857 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 740 transitions. Word has length 173 [2024-11-28 03:42:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:33,859 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 740 transitions. [2024-11-28 03:42:33,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:42:33,859 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 740 transitions. [2024-11-28 03:42:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 03:42:33,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:33,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:33,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:42:33,868 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:33,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1701801468, now seen corresponding path program 1 times [2024-11-28 03:42:33,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461348750] [2024-11-28 03:42:33,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:33,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:42:34,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:34,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461348750] [2024-11-28 03:42:34,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461348750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:34,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:34,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:42:34,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655919925] [2024-11-28 03:42:34,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:34,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:42:34,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:34,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:42:34,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:42:34,401 INFO L87 Difference]: Start difference. First operand 529 states and 740 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:42:34,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:34,489 INFO L93 Difference]: Finished difference Result 1066 states and 1481 transitions. [2024-11-28 03:42:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:42:34,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (3), 2 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 173 [2024-11-28 03:42:34,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:34,500 INFO L225 Difference]: With dead ends: 1066 [2024-11-28 03:42:34,500 INFO L226 Difference]: Without dead ends: 677 [2024-11-28 03:42:34,501 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 [2024-11-28 03:42:34,502 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 246 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1052 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 [2024-11-28 03:42:34,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1052 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:42:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-28 03:42:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2024-11-28 03:42:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 655 states have (on average 1.3755725190839694) internal successors, (901), 665 states have internal predecessors, (901), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 03:42:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 939 transitions. [2024-11-28 03:42:34,544 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 939 transitions. Word has length 173 [2024-11-28 03:42:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:34,546 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 939 transitions. [2024-11-28 03:42:34,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:42:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 939 transitions. [2024-11-28 03:42:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 03:42:34,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:34,549 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:34,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:42:34,550 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:34,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash -211166158, now seen corresponding path program 1 times [2024-11-28 03:42:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220371043] [2024-11-28 03:42:34,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:42:35,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220371043] [2024-11-28 03:42:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220371043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845389890] [2024-11-28 03:42:35,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:35,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:35,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:35,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:35,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:42:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:36,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:42:36,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:42:36,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:42:37,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845389890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:37,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:37,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:42:37,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830821114] [2024-11-28 03:42:37,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:37,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:42:37,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:37,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:42:37,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:42:37,205 INFO L87 Difference]: Start difference. First operand 677 states and 939 transitions. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:42:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:37,495 INFO L93 Difference]: Finished difference Result 1481 states and 2049 transitions. [2024-11-28 03:42:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:42:37,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 188 [2024-11-28 03:42:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:37,504 INFO L225 Difference]: With dead ends: 1481 [2024-11-28 03:42:37,504 INFO L226 Difference]: Without dead ends: 1450 [2024-11-28 03:42:37,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:42:37,509 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 2042 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:37,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 2584 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:42:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2024-11-28 03:42:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2024-11-28 03:42:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1413 states have (on average 1.364472753007785) internal successors, (1928), 1423 states have internal predecessors, (1928), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 03:42:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1996 transitions. [2024-11-28 03:42:37,577 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1996 transitions. Word has length 188 [2024-11-28 03:42:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:37,578 INFO L471 AbstractCegarLoop]: Abstraction has 1450 states and 1996 transitions. [2024-11-28 03:42:37,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:42:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1996 transitions. [2024-11-28 03:42:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2024-11-28 03:42:37,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:37,594 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, 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, 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] [2024-11-28 03:42:37,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:42:37,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:37,798 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:37,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1557849723, now seen corresponding path program 1 times [2024-11-28 03:42:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:37,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589107080] [2024-11-28 03:42:37,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:37,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:42:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589107080] [2024-11-28 03:42:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589107080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:41,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132253019] [2024-11-28 03:42:41,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:41,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:41,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:41,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:42:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:42,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:42:42,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:42:44,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:42:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132253019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:46,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:42:46,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395008142] [2024-11-28 03:42:46,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:46,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:42:46,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:46,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:42:46,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:42:46,106 INFO L87 Difference]: Start difference. First operand 1450 states and 1996 transitions. Second operand has 13 states, 13 states have (on average 105.3076923076923) internal successors, (1369), 13 states have internal predecessors, (1369), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:42:46,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:46,860 INFO L93 Difference]: Finished difference Result 3605 states and 4968 transitions. [2024-11-28 03:42:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:42:46,865 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 105.3076923076923) internal successors, (1369), 13 states have internal predecessors, (1369), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 629 [2024-11-28 03:42:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:46,888 INFO L225 Difference]: With dead ends: 3605 [2024-11-28 03:42:46,888 INFO L226 Difference]: Without dead ends: 3574 [2024-11-28 03:42:46,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1263 GetRequests, 1252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:42:46,891 INFO L435 NwaCegarLoop]: 573 mSDtfsCounter, 8927 mSDsluCounter, 4347 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8979 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:46,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8979 Valid, 4920 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:42:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2024-11-28 03:42:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3574. [2024-11-28 03:42:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3501 states have (on average 1.363039131676664) internal successors, (4772), 3511 states have internal predecessors, (4772), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-28 03:42:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4912 transitions. [2024-11-28 03:42:47,043 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4912 transitions. Word has length 629 [2024-11-28 03:42:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:47,044 INFO L471 AbstractCegarLoop]: Abstraction has 3574 states and 4912 transitions. [2024-11-28 03:42:47,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 105.3076923076923) internal successors, (1369), 13 states have internal predecessors, (1369), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:42:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4912 transitions. [2024-11-28 03:42:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2024-11-28 03:42:47,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:47,134 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2024-11-28 03:42:47,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:42:47,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f92ba7-c8fc-4cdd-bc14-1f8fec278514/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:42:47,338 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:47,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1157171675, now seen corresponding path program 2 times [2024-11-28 03:42:47,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:47,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345287098] [2024-11-28 03:42:47,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms