./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.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_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/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_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/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_4fd1e256-8418-4381-8d58-1b7cc68940d5/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 6d35be8b8e312d4eada0f7530ae9d43ecf1865be922a243e0781a735d175935c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:03:04,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:03:04,556 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:03:04,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:03:04,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:03:04,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:03:04,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:03:04,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:03:04,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:03:04,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:03:04,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:03:04,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:03:04,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:03:04,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:03:04,597 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:03:04,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:03:04,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:03:04,598 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:03:04,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:03:04,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:03:04,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:03:04,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:03:04,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:03:04,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:03:04,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:03:04,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:03:04,600 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:03:04,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:03:04,600 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:03:04,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:03:04,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:03:04,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:03:04,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:04,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:03:04,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:03:04,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:03:04,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:03:04,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:04,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:03:04,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:03:04,602 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_4fd1e256-8418-4381-8d58-1b7cc68940d5/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 -> 6d35be8b8e312d4eada0f7530ae9d43ecf1865be922a243e0781a735d175935c [2024-11-28 03:03:04,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:03:04,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:03:04,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:03:04,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:03:04,980 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:03:04,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i [2024-11-28 03:03:08,116 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/data/905fab5bc/c028d56fd519491e91ae7a61ea683420/FLAGff65e696d [2024-11-28 03:03:08,658 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:03:08,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i [2024-11-28 03:03:08,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/data/905fab5bc/c028d56fd519491e91ae7a61ea683420/FLAGff65e696d [2024-11-28 03:03:08,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/data/905fab5bc/c028d56fd519491e91ae7a61ea683420 [2024-11-28 03:03:08,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:03:08,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:03:08,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:08,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:03:08,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:03:08,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:08" (1/1) ... [2024-11-28 03:03:08,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d52c2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:08, skipping insertion in model container [2024-11-28 03:03:08,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:08" (1/1) ... [2024-11-28 03:03:08,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:03:09,426 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_4fd1e256-8418-4381-8d58-1b7cc68940d5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i[33021,33034] [2024-11-28 03:03:09,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:09,650 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:03:09,719 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_4fd1e256-8418-4381-8d58-1b7cc68940d5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i[33021,33034] [2024-11-28 03:03:09,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:09,924 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:03:09,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09 WrapperNode [2024-11-28 03:03:09,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:09,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:09,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:03:09,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:03:09,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:09,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,100 INFO L138 Inliner]: procedures = 176, calls = 386, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1713 [2024-11-28 03:03:10,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:10,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:03:10,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:03:10,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:03:10,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,313 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2024-11-28 03:03:10,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,406 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:03:10,445 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:03:10,445 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:03:10,445 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:03:10,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (1/1) ... [2024-11-28 03:03:10,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:10,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:10,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:03:10,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:03:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:03:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:03:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:03:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:03:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:03:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:03:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 03:03:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 03:03:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 03:03:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 03:03:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:03:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:03:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:03:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:03:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:03:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:03:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:03:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:03:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:03:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:03:10,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:03:10,864 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:03:10,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:03:13,491 INFO L? ?]: Removed 413 outVars from TransFormulas that were not future-live. [2024-11-28 03:03:13,492 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:03:13,516 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:03:13,516 INFO L312 CfgBuilder]: Removed 39 assume(true) statements. [2024-11-28 03:03:13,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:13 BoogieIcfgContainer [2024-11-28 03:03:13,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:03:13,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:03:13,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:03:13,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:03:13,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:08" (1/3) ... [2024-11-28 03:03:13,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e250fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:13, skipping insertion in model container [2024-11-28 03:03:13,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:09" (2/3) ... [2024-11-28 03:03:13,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e250fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:13, skipping insertion in model container [2024-11-28 03:03:13,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:13" (3/3) ... [2024-11-28 03:03:13,528 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-2.i [2024-11-28 03:03:13,545 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:03:13,546 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test4-2.i that has 4 procedures, 470 locations, 1 initial locations, 41 loop locations, and 1 error locations. [2024-11-28 03:03:13,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:03:13,633 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;@19f26aa7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:03:13,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:03:13,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 466 states, 446 states have (on average 1.609865470852018) internal successors, (718), 457 states have internal predecessors, (718), 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 03:03:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:03:13,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:13,652 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:13,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:13,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:13,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1456760676, now seen corresponding path program 1 times [2024-11-28 03:03:13,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:13,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089953845] [2024-11-28 03:03:13,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:13,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:13,846 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 03:03:13,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:13,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089953845] [2024-11-28 03:03:13,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089953845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:13,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:03:13,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805979855] [2024-11-28 03:03:13,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:13,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:03:13,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:13,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:03:13,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:03:13,878 INFO L87 Difference]: Start difference. First operand has 466 states, 446 states have (on average 1.609865470852018) internal successors, (718), 457 states have internal predecessors, (718), 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 03:03:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:13,952 INFO L93 Difference]: Finished difference Result 930 states and 1508 transitions. [2024-11-28 03:03:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:03:13,954 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 03:03:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:13,969 INFO L225 Difference]: With dead ends: 930 [2024-11-28 03:03:13,969 INFO L226 Difference]: Without dead ends: 428 [2024-11-28 03:03:13,974 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 03:03:13,978 INFO L435 NwaCegarLoop]: 673 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, 673 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 03:03:13,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-28 03:03:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-11-28 03:03:14,073 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 03:03:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 622 transitions. [2024-11-28 03:03:14,090 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 622 transitions. Word has length 11 [2024-11-28 03:03:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:14,090 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 622 transitions. [2024-11-28 03:03:14,093 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 03:03:14,094 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 622 transitions. [2024-11-28 03:03:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:03:14,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:14,094 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:14,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:03:14,095 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:14,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1386695307, now seen corresponding path program 1 times [2024-11-28 03:03:14,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:14,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865031006] [2024-11-28 03:03:14,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:14,240 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 03:03:14,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:14,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865031006] [2024-11-28 03:03:14,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865031006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:14,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:14,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:03:14,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542102332] [2024-11-28 03:03:14,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:14,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:14,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:14,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:14,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:14,243 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 03:03:14,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:14,362 INFO L93 Difference]: Finished difference Result 850 states and 1238 transitions. [2024-11-28 03:03:14,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:14,364 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 03:03:14,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:14,371 INFO L225 Difference]: With dead ends: 850 [2024-11-28 03:03:14,374 INFO L226 Difference]: Without dead ends: 819 [2024-11-28 03:03:14,375 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 03:03:14,376 INFO L435 NwaCegarLoop]: 668 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, 1285 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 03:03:14,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1285 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-28 03:03:14,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 429. [2024-11-28 03:03:14,429 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 03:03:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 623 transitions. [2024-11-28 03:03:14,434 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 623 transitions. Word has length 11 [2024-11-28 03:03:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:14,434 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 623 transitions. [2024-11-28 03:03:14,434 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 03:03:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 623 transitions. [2024-11-28 03:03:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:03:14,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:14,441 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 03:03:14,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:03:14,441 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:14,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1114660050, now seen corresponding path program 1 times [2024-11-28 03:03:14,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:14,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843049038] [2024-11-28 03:03:14,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:15,646 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 03:03:15,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:15,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843049038] [2024-11-28 03:03:15,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843049038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:15,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:15,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:03:15,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786383623] [2024-11-28 03:03:15,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:15,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:03:15,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:15,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:03:15,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:15,653 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 03:03:15,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:15,821 INFO L93 Difference]: Finished difference Result 858 states and 1246 transitions. [2024-11-28 03:03:15,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:15,822 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 03:03:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:15,824 INFO L225 Difference]: With dead ends: 858 [2024-11-28 03:03:15,825 INFO L226 Difference]: Without dead ends: 432 [2024-11-28 03:03:15,827 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 03:03:15,828 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 94 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 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 03:03:15,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 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 03:03:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-28 03:03:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 429. [2024-11-28 03:03:15,850 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 03:03:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 616 transitions. [2024-11-28 03:03:15,854 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 616 transitions. Word has length 158 [2024-11-28 03:03:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:15,857 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 616 transitions. [2024-11-28 03:03:15,858 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 03:03:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 616 transitions. [2024-11-28 03:03:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:03:15,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:15,867 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 03:03:15,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:03:15,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:15,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:15,868 INFO L85 PathProgramCache]: Analyzing trace with hash 733625018, now seen corresponding path program 1 times [2024-11-28 03:03:15,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:15,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281294947] [2024-11-28 03:03:15,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:16,338 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 03:03:16,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281294947] [2024-11-28 03:03:16,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281294947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:16,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:16,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:03:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317814572] [2024-11-28 03:03:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:16,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:16,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:16,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:16,342 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 03:03:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:16,448 INFO L93 Difference]: Finished difference Result 861 states and 1238 transitions. [2024-11-28 03:03:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:16,449 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 03:03:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:16,452 INFO L225 Difference]: With dead ends: 861 [2024-11-28 03:03:16,453 INFO L226 Difference]: Without dead ends: 435 [2024-11-28 03:03:16,455 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 03:03:16,457 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 03:03:16,459 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 03:03:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-11-28 03:03:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2024-11-28 03:03:16,481 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 03:03:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 622 transitions. [2024-11-28 03:03:16,487 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 622 transitions. Word has length 158 [2024-11-28 03:03:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:16,489 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 622 transitions. [2024-11-28 03:03:16,489 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 03:03:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 622 transitions. [2024-11-28 03:03:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:03:16,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:16,495 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 03:03:16,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:03:16,496 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:16,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1681676984, now seen corresponding path program 1 times [2024-11-28 03:03:16,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:16,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378497717] [2024-11-28 03:03:16,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:16,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:16,915 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 03:03:16,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:16,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378497717] [2024-11-28 03:03:16,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378497717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:16,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:16,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:03:16,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850841228] [2024-11-28 03:03:16,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:16,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:16,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:16,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:16,923 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 03:03:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:17,027 INFO L93 Difference]: Finished difference Result 1004 states and 1438 transitions. [2024-11-28 03:03:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:17,030 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 03:03:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:17,036 INFO L225 Difference]: With dead ends: 1004 [2024-11-28 03:03:17,037 INFO L226 Difference]: Without dead ends: 572 [2024-11-28 03:03:17,039 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 03:03:17,039 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 03:03:17,040 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 03:03:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-28 03:03:17,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-28 03:03:17,112 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 03:03:17,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 818 transitions. [2024-11-28 03:03:17,119 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 818 transitions. Word has length 158 [2024-11-28 03:03:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:17,121 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 818 transitions. [2024-11-28 03:03:17,121 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 03:03:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 818 transitions. [2024-11-28 03:03:17,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 03:03:17,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:17,124 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 03:03:17,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:03:17,124 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:17,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -164915960, now seen corresponding path program 1 times [2024-11-28 03:03:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465804895] [2024-11-28 03:03:17,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:17,670 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 03:03:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465804895] [2024-11-28 03:03:17,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465804895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:17,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:17,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:03:17,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436135272] [2024-11-28 03:03:17,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:17,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:17,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:17,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:17,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:03:17,675 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 03:03:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:17,819 INFO L93 Difference]: Finished difference Result 961 states and 1370 transitions. [2024-11-28 03:03:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:03:17,819 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 03:03:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:17,824 INFO L225 Difference]: With dead ends: 961 [2024-11-28 03:03:17,825 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 03:03:17,826 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 03:03:17,828 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 03:03:17,829 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 03:03:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 03:03:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 03:03:17,856 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 03:03:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 740 transitions. [2024-11-28 03:03:17,861 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 740 transitions. Word has length 173 [2024-11-28 03:03:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:17,861 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 740 transitions. [2024-11-28 03:03:17,862 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 03:03:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 740 transitions. [2024-11-28 03:03:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 03:03:17,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:17,868 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 03:03:17,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:03:17,869 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:17,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:17,869 INFO L85 PathProgramCache]: Analyzing trace with hash 852301308, now seen corresponding path program 1 times [2024-11-28 03:03:17,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:17,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432169595] [2024-11-28 03:03:17,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:17,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:18,309 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 03:03:18,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:18,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432169595] [2024-11-28 03:03:18,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432169595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:18,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:18,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:03:18,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732901889] [2024-11-28 03:03:18,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:18,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:18,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:18,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:18,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:18,313 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 03:03:18,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:18,385 INFO L93 Difference]: Finished difference Result 1066 states and 1481 transitions. [2024-11-28 03:03:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:18,388 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 03:03:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:18,392 INFO L225 Difference]: With dead ends: 1066 [2024-11-28 03:03:18,393 INFO L226 Difference]: Without dead ends: 677 [2024-11-28 03:03:18,394 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 03:03:18,395 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 03:03:18,396 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 03:03:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-28 03:03:18,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2024-11-28 03:03:18,422 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 03:03:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 939 transitions. [2024-11-28 03:03:18,427 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 939 transitions. Word has length 173 [2024-11-28 03:03:18,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:18,429 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 939 transitions. [2024-11-28 03:03:18,429 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 03:03:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 939 transitions. [2024-11-28 03:03:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 03:03:18,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:18,434 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 03:03:18,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:03:18,434 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:18,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash -619874254, now seen corresponding path program 1 times [2024-11-28 03:03:18,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:18,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236020384] [2024-11-28 03:03:18,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:18,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:18,961 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 03:03:18,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:18,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236020384] [2024-11-28 03:03:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236020384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:18,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566040442] [2024-11-28 03:03:18,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:18,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:18,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:18,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:18,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:03:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:19,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:03:19,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:20,086 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 03:03:20,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:20,536 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 03:03:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566040442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:20,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:20,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:03:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283904581] [2024-11-28 03:03:20,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:20,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:03:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:20,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:03:20,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:20,541 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 03:03:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:20,772 INFO L93 Difference]: Finished difference Result 1481 states and 2049 transitions. [2024-11-28 03:03:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:20,773 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 03:03:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:20,782 INFO L225 Difference]: With dead ends: 1481 [2024-11-28 03:03:20,782 INFO L226 Difference]: Without dead ends: 1450 [2024-11-28 03:03:20,783 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 03:03:20,787 INFO L435 NwaCegarLoop]: 573 mSDtfsCounter, 1998 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2014 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:20,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2014 Valid, 2622 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2024-11-28 03:03:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2024-11-28 03:03:20,840 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 03:03:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1996 transitions. [2024-11-28 03:03:20,851 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1996 transitions. Word has length 188 [2024-11-28 03:03:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:20,853 INFO L471 AbstractCegarLoop]: Abstraction has 1450 states and 1996 transitions. [2024-11-28 03:03:20,853 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 03:03:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1996 transitions. [2024-11-28 03:03:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2024-11-28 03:03:20,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:20,875 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 03:03:20,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:03:21,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:21,079 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:21,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1976550789, now seen corresponding path program 1 times [2024-11-28 03:03:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:21,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893047550] [2024-11-28 03:03:21,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:21,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:23,730 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 03:03:23,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893047550] [2024-11-28 03:03:23,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893047550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229998081] [2024-11-28 03:03:23,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:23,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:23,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:23,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:03:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:25,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:03:25,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:26,441 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 03:03:26,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:27,716 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 03:03:27,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229998081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:27,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:27,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:03:27,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683162189] [2024-11-28 03:03:27,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:27,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:03:27,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:27,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:03:27,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:03:27,725 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 03:03:28,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:28,450 INFO L93 Difference]: Finished difference Result 3605 states and 4968 transitions. [2024-11-28 03:03:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:03:28,451 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 03:03:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:28,476 INFO L225 Difference]: With dead ends: 3605 [2024-11-28 03:03:28,476 INFO L226 Difference]: Without dead ends: 3574 [2024-11-28 03:03:28,478 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 03:03:28,480 INFO L435 NwaCegarLoop]: 573 mSDtfsCounter, 8425 mSDsluCounter, 5010 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8477 SdHoareTripleChecker+Valid, 5583 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:28,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8477 Valid, 5583 Invalid, 153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:03:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2024-11-28 03:03:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3574. [2024-11-28 03:03:28,651 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 03:03:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4912 transitions. [2024-11-28 03:03:28,678 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4912 transitions. Word has length 629 [2024-11-28 03:03:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:28,680 INFO L471 AbstractCegarLoop]: Abstraction has 3574 states and 4912 transitions. [2024-11-28 03:03:28,681 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 03:03:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4912 transitions. [2024-11-28 03:03:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2024-11-28 03:03:28,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:28,798 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 03:03:28,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:28,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1e256-8418-4381-8d58-1b7cc68940d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:03:28,998 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:28,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:29,000 INFO L85 PathProgramCache]: Analyzing trace with hash 530555429, now seen corresponding path program 2 times [2024-11-28 03:03:29,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:29,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766294589] [2024-11-28 03:03:29,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:03:29,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms