./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:19:33,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:19:33,162 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:19:33,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:19:33,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:19:33,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:19:33,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:19:33,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:19:33,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:19:33,224 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:19:33,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:19:33,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:19:33,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:19:33,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:19:33,225 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:19:33,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:19:33,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:19:33,225 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:19:33,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:19:33,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:19:33,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:19:33,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:19:33,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:19:33,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:19:33,228 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:19:33,228 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:19:33,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:19:33,229 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:19:33,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:19:33,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:19:33,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:19:33,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:19:33,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:33,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:19:33,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:19:33,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:19:33,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:19:33,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:19:33,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:19:33,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:19:33,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:19:33,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:19:33,233 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_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2024-11-13 14:19:33,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:19:33,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:19:33,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:19:33,606 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:19:33,606 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:19:33,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i Unable to find full path for "g++" [2024-11-13 14:19:35,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:19:36,202 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:19:36,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2024-11-13 14:19:36,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/data/761cb296f/84e70b90c53e4391a8c3cfe76297bd0b/FLAGe28675523 [2024-11-13 14:19:36,247 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/data/761cb296f/84e70b90c53e4391a8c3cfe76297bd0b [2024-11-13 14:19:36,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:19:36,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:19:36,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:36,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:19:36,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:19:36,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:36" (1/1) ... [2024-11-13 14:19:36,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d71825b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:36, skipping insertion in model container [2024-11-13 14:19:36,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:36" (1/1) ... [2024-11-13 14:19:36,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:19:36,853 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_7917e8ae-e54e-4247-9140-956800de58e7/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2024-11-13 14:19:36,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:36,929 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:19:37,004 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_7917e8ae-e54e-4247-9140-956800de58e7/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2024-11-13 14:19:37,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:37,077 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:19:37,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37 WrapperNode [2024-11-13 14:19:37,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:37,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:37,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:19:37,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:19:37,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,130 INFO L138 Inliner]: procedures = 232, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 114 [2024-11-13 14:19:37,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:37,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:19:37,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:19:37,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:19:37,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,147 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,182 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 10 writes are split as follows [0, 10]. [2024-11-13 14:19:37,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:19:37,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:19:37,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:19:37,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:19:37,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (1/1) ... [2024-11-13 14:19:37,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:37,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:37,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:19:37,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:19:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:19:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:19:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2024-11-13 14:19:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2024-11-13 14:19:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:19:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:19:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:19:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2024-11-13 14:19:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2024-11-13 14:19:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:19:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:19:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-13 14:19:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-13 14:19:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:19:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2024-11-13 14:19:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2024-11-13 14:19:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:19:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:19:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:19:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:19:37,438 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:19:37,441 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:19:37,966 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-13 14:19:37,966 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:19:37,979 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:19:37,979 INFO L316 CfgBuilder]: Removed 41 assume(true) statements. [2024-11-13 14:19:37,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:37 BoogieIcfgContainer [2024-11-13 14:19:37,980 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:19:37,983 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:19:37,983 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:19:37,988 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:19:37,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:19:36" (1/3) ... [2024-11-13 14:19:37,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2b0528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:37, skipping insertion in model container [2024-11-13 14:19:37,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:37" (2/3) ... [2024-11-13 14:19:37,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2b0528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:37, skipping insertion in model container [2024-11-13 14:19:37,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:37" (3/3) ... [2024-11-13 14:19:37,992 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2024-11-13 14:19:38,013 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:19:38,015 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG bubble_sort_linux-2.i that has 5 procedures, 116 locations, 1 initial locations, 23 loop locations, and 1 error locations. [2024-11-13 14:19:38,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:19:38,119 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;@6996fe97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:19:38,119 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:19:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 87 states have (on average 1.7586206896551724) internal successors, (153), 106 states have internal predecessors, (153), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:19:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:19:38,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:38,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:38,135 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:38,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1598642791, now seen corresponding path program 1 times [2024-11-13 14:19:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:38,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873502082] [2024-11-13 14:19:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:38,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:38,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873502082] [2024-11-13 14:19:38,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873502082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:38,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:19:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265570434] [2024-11-13 14:19:38,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:38,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:19:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:19:38,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:19:38,360 INFO L87 Difference]: Start difference. First operand has 116 states, 87 states have (on average 1.7586206896551724) internal successors, (153), 106 states have internal predecessors, (153), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:38,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:38,419 INFO L93 Difference]: Finished difference Result 226 states and 393 transitions. [2024-11-13 14:19:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:19:38,422 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 14:19:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:38,430 INFO L225 Difference]: With dead ends: 226 [2024-11-13 14:19:38,430 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 14:19:38,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:19:38,443 INFO L432 NwaCegarLoop]: 134 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, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:38,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:19:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 14:19:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-13 14:19:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.25) internal successors, (100), 95 states have internal predecessors, (100), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:19:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2024-11-13 14:19:38,508 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 9 [2024-11-13 14:19:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:38,509 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2024-11-13 14:19:38,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2024-11-13 14:19:38,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:19:38,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:38,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:38,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:19:38,514 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:38,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:38,515 INFO L85 PathProgramCache]: Analyzing trace with hash 135441858, now seen corresponding path program 1 times [2024-11-13 14:19:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:38,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306884825] [2024-11-13 14:19:38,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:38,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:39,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:19:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:39,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306884825] [2024-11-13 14:19:39,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306884825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:39,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:39,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002365969] [2024-11-13 14:19:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:39,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:39,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:39,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:39,086 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:39,702 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2024-11-13 14:19:39,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:19:39,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-13 14:19:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:39,704 INFO L225 Difference]: With dead ends: 107 [2024-11-13 14:19:39,706 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 14:19:39,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:19:39,707 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 239 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:39,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 121 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:19:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 14:19:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-13 14:19:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.2375) internal successors, (99), 94 states have internal predecessors, (99), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:19:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2024-11-13 14:19:39,732 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2024-11-13 14:19:39,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:39,733 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2024-11-13 14:19:39,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2024-11-13 14:19:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 14:19:39,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:39,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:39,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:19:39,736 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:39,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:39,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1699616320, now seen corresponding path program 1 times [2024-11-13 14:19:39,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:39,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830111345] [2024-11-13 14:19:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:39,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:40,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:19:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:40,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:40,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830111345] [2024-11-13 14:19:40,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830111345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:40,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:40,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:19:40,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416838953] [2024-11-13 14:19:40,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:40,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:19:40,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:19:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:19:40,917 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:42,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:42,420 INFO L93 Difference]: Finished difference Result 195 states and 232 transitions. [2024-11-13 14:19:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:19:42,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-13 14:19:42,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:42,423 INFO L225 Difference]: With dead ends: 195 [2024-11-13 14:19:42,423 INFO L226 Difference]: Without dead ends: 189 [2024-11-13 14:19:42,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:19:42,425 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 475 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:42,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 177 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:19:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-13 14:19:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2024-11-13 14:19:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 141 states have (on average 1.24822695035461) internal successors, (176), 155 states have internal predecessors, (176), 23 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 14:19:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 206 transitions. [2024-11-13 14:19:42,475 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 206 transitions. Word has length 23 [2024-11-13 14:19:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:42,476 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 206 transitions. [2024-11-13 14:19:42,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 206 transitions. [2024-11-13 14:19:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 14:19:42,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:42,477 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:42,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:19:42,477 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:42,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -359772177, now seen corresponding path program 1 times [2024-11-13 14:19:42,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:42,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990582959] [2024-11-13 14:19:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:42,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:43,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:19:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:44,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:44,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990582959] [2024-11-13 14:19:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990582959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:44,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:19:44,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526592672] [2024-11-13 14:19:44,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:44,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:19:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:19:44,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:19:44,170 INFO L87 Difference]: Start difference. First operand 169 states and 206 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:45,553 INFO L93 Difference]: Finished difference Result 269 states and 324 transitions. [2024-11-13 14:19:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:19:45,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-13 14:19:45,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:45,556 INFO L225 Difference]: With dead ends: 269 [2024-11-13 14:19:45,556 INFO L226 Difference]: Without dead ends: 266 [2024-11-13 14:19:45,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:19:45,557 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 303 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:45,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 227 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:19:45,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-13 14:19:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 248. [2024-11-13 14:19:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 213 states have (on average 1.244131455399061) internal successors, (265), 228 states have internal predecessors, (265), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:19:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 304 transitions. [2024-11-13 14:19:45,627 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 304 transitions. Word has length 26 [2024-11-13 14:19:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:45,627 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 304 transitions. [2024-11-13 14:19:45,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 304 transitions. [2024-11-13 14:19:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 14:19:45,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:45,628 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:45,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:19:45,629 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:45,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2019654096, now seen corresponding path program 1 times [2024-11-13 14:19:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:45,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702569625] [2024-11-13 14:19:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:46,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:19:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:46,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702569625] [2024-11-13 14:19:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702569625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:46,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:46,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:19:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994380170] [2024-11-13 14:19:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:46,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:19:46,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:46,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:19:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:19:46,873 INFO L87 Difference]: Start difference. First operand 248 states and 304 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:48,265 INFO L93 Difference]: Finished difference Result 268 states and 322 transitions. [2024-11-13 14:19:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:19:48,266 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-13 14:19:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:48,268 INFO L225 Difference]: With dead ends: 268 [2024-11-13 14:19:48,268 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 14:19:48,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:19:48,269 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 342 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:48,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 227 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:19:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 14:19:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 248. [2024-11-13 14:19:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 213 states have (on average 1.2394366197183098) internal successors, (264), 228 states have internal predecessors, (264), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:19:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 303 transitions. [2024-11-13 14:19:48,325 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 303 transitions. Word has length 29 [2024-11-13 14:19:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:48,326 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 303 transitions. [2024-11-13 14:19:48,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 303 transitions. [2024-11-13 14:19:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 14:19:48,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:48,327 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:48,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:19:48,327 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:48,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash -912078886, now seen corresponding path program 1 times [2024-11-13 14:19:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:48,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818998189] [2024-11-13 14:19:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:49,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:19:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:50,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818998189] [2024-11-13 14:19:50,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818998189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:50,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:50,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 14:19:50,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586268598] [2024-11-13 14:19:50,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:50,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:19:50,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:19:50,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:19:50,090 INFO L87 Difference]: Start difference. First operand 248 states and 303 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:51,852 INFO L93 Difference]: Finished difference Result 267 states and 320 transitions. [2024-11-13 14:19:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:19:51,853 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-13 14:19:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:51,857 INFO L225 Difference]: With dead ends: 267 [2024-11-13 14:19:51,857 INFO L226 Difference]: Without dead ends: 264 [2024-11-13 14:19:51,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:19:51,860 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 337 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:51,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 260 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:19:51,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-13 14:19:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 248. [2024-11-13 14:19:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 213 states have (on average 1.2347417840375587) internal successors, (263), 228 states have internal predecessors, (263), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:19:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 302 transitions. [2024-11-13 14:19:51,923 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 302 transitions. Word has length 32 [2024-11-13 14:19:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:51,925 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 302 transitions. [2024-11-13 14:19:51,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 302 transitions. [2024-11-13 14:19:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:19:51,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:51,926 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:51,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:19:51,927 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:51,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:51,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1995005827, now seen corresponding path program 1 times [2024-11-13 14:19:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894530649] [2024-11-13 14:19:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:53,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:19:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:53,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:53,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894530649] [2024-11-13 14:19:53,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894530649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:53,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:53,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 14:19:53,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555628210] [2024-11-13 14:19:53,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:53,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:19:53,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:19:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:19:53,647 INFO L87 Difference]: Start difference. First operand 248 states and 302 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:55,568 INFO L93 Difference]: Finished difference Result 266 states and 318 transitions. [2024-11-13 14:19:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:19:55,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-11-13 14:19:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:55,572 INFO L225 Difference]: With dead ends: 266 [2024-11-13 14:19:55,573 INFO L226 Difference]: Without dead ends: 263 [2024-11-13 14:19:55,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:19:55,574 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 335 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:55,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 266 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:19:55,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-13 14:19:55,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 248. [2024-11-13 14:19:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 213 states have (on average 1.2300469483568075) internal successors, (262), 228 states have internal predecessors, (262), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:19:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 301 transitions. [2024-11-13 14:19:55,634 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 301 transitions. Word has length 35 [2024-11-13 14:19:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:55,635 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 301 transitions. [2024-11-13 14:19:55,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 301 transitions. [2024-11-13 14:19:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:19:55,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:55,638 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:55,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:19:55,638 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:55,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash -638552515, now seen corresponding path program 1 times [2024-11-13 14:19:55,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:55,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756227697] [2024-11-13 14:19:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:55,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:57,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:19:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:57,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 14:19:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:19:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:57,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756227697] [2024-11-13 14:19:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756227697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:57,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532686283] [2024-11-13 14:19:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:57,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:57,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:57,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:57,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:19:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:57,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-13 14:19:57,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:58,119 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 14:19:58,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-13 14:19:58,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:19:58,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:19:58,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:19:58,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:19:58,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2024-11-13 14:19:58,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2024-11-13 14:19:58,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 45 [2024-11-13 14:19:58,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:19:58,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 16 [2024-11-13 14:19:58,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:19:58,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2024-11-13 14:19:58,768 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:19:58,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:19:58,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 14:19:58,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:19:58,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 8 [2024-11-13 14:20:16,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:08,424 WARN L286 SmtUtils]: Spent 52.31s on a formula simplification. DAG size of input: 149 DAG size of output: 55 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 14:21:08,425 INFO L349 Elim1Store]: treesize reduction 612, result has 15.1 percent of original size [2024-11-13 14:21:08,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 12 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 15 new quantified variables, introduced 12 case distinctions, treesize of input 729 treesize of output 2192 [2024-11-13 14:21:27,136 WARN L286 SmtUtils]: Spent 18.47s on a formula simplification. DAG size of input: 63 DAG size of output: 30 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 14:21:27,136 INFO L349 Elim1Store]: treesize reduction 144, result has 23.0 percent of original size [2024-11-13 14:21:27,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 1785 treesize of output 1540 [2024-11-13 14:21:39,214 INFO L224 Elim1Store]: Index analysis took 8635 ms [2024-11-13 14:21:41,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 383 [2024-11-13 14:22:29,116 INFO L224 Elim1Store]: Index analysis took 389 ms [2024-11-13 14:22:29,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 162 [2024-11-13 14:22:29,940 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-13 14:22:29,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:22:30,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:30,141 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:331) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:186) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:542) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:521) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:514) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:325) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 14:22:30,147 INFO L158 Benchmark]: Toolchain (without parser) took 173891.41ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 91.5MB in the beginning and 269.8MB in the end (delta: -178.3MB). Peak memory consumption was 191.4MB. Max. memory is 16.1GB. [2024-11-13 14:22:30,148 INFO L158 Benchmark]: CDTParser took 1.06ms. Allocated memory is still 117.4MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:22:30,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 819.92ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 64.5MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 14:22:30,148 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.00ms. Allocated memory is still 117.4MB. Free memory was 64.5MB in the beginning and 62.4MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:22:30,149 INFO L158 Benchmark]: Boogie Preprocessor took 77.08ms. Allocated memory is still 117.4MB. Free memory was 62.4MB in the beginning and 58.3MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:22:30,149 INFO L158 Benchmark]: RCFGBuilder took 771.11ms. Allocated memory is still 117.4MB. Free memory was 58.3MB in the beginning and 85.2MB in the end (delta: -26.8MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2024-11-13 14:22:30,149 INFO L158 Benchmark]: TraceAbstraction took 172162.71ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 84.6MB in the beginning and 269.8MB in the end (delta: -185.2MB). Peak memory consumption was 185.4MB. Max. memory is 16.1GB. [2024-11-13 14:22:30,151 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06ms. Allocated memory is still 117.4MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 819.92ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 64.5MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.00ms. Allocated memory is still 117.4MB. Free memory was 64.5MB in the beginning and 62.4MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.08ms. Allocated memory is still 117.4MB. Free memory was 62.4MB in the beginning and 58.3MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 771.11ms. Allocated memory is still 117.4MB. Free memory was 58.3MB in the beginning and 85.2MB in the end (delta: -26.8MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * TraceAbstraction took 172162.71ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 84.6MB in the beginning and 269.8MB in the end (delta: -185.2MB). Peak memory consumption was 185.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-13 14:22:30,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:22:32,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:22:33,085 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 14:22:33,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:22:33,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:22:33,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:22:33,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:22:33,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:22:33,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:22:33,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:22:33,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:22:33,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:22:33,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:22:33,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:22:33,118 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:22:33,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:22:33,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:22:33,119 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:22:33,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:22:33,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:22:33,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:22:33,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:22:33,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:22:33,120 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:22:33,120 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:22:33,120 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:22:33,120 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:22:33,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:22:33,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:22:33,121 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:22:33,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:22:33,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:22:33,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:22:33,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:22:33,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:22:33,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:22:33,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:22:33,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:22:33,122 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:22:33,122 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:22:33,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:22:33,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:22:33,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:22:33,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:22:33,123 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_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2024-11-13 14:22:33,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:22:33,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:22:33,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:22:33,483 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:22:33,486 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:22:33,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i Unable to find full path for "g++" [2024-11-13 14:22:35,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:22:35,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:22:35,833 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2024-11-13 14:22:35,858 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/data/baaffe72c/c7dc86ffdfd64ee980904c72b086b989/FLAG43a04260e [2024-11-13 14:22:35,882 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/data/baaffe72c/c7dc86ffdfd64ee980904c72b086b989 [2024-11-13 14:22:35,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:22:35,887 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:22:35,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:22:35,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:22:35,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:22:35,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:22:35" (1/1) ... [2024-11-13 14:22:35,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1f6ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:35, skipping insertion in model container [2024-11-13 14:22:35,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:22:35" (1/1) ... [2024-11-13 14:22:35,960 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:22:36,475 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_7917e8ae-e54e-4247-9140-956800de58e7/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2024-11-13 14:22:36,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:22:36,545 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 14:22:36,554 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:22:36,602 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_7917e8ae-e54e-4247-9140-956800de58e7/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2024-11-13 14:22:36,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:22:36,648 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:22:36,694 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_7917e8ae-e54e-4247-9140-956800de58e7/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2024-11-13 14:22:36,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:22:36,791 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:22:36,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36 WrapperNode [2024-11-13 14:22:36,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:22:36,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:22:36,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:22:36,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:22:36,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,847 INFO L138 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 111 [2024-11-13 14:22:36,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:22:36,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:22:36,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:22:36,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:22:36,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,935 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 10 writes are split as follows [0, 10]. [2024-11-13 14:22:36,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:36,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:22:36,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:22:36,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:22:36,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:22:36,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (1/1) ... [2024-11-13 14:22:37,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:22:37,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:37,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:22:37,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:22:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 14:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 14:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2024-11-13 14:22:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2024-11-13 14:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 14:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 14:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 14:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2024-11-13 14:22:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2024-11-13 14:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-13 14:22:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-13 14:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2024-11-13 14:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2024-11-13 14:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:22:37,336 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:22:37,340 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:22:38,129 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-13 14:22:38,129 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:22:38,142 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:22:38,142 INFO L316 CfgBuilder]: Removed 41 assume(true) statements. [2024-11-13 14:22:38,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:22:38 BoogieIcfgContainer [2024-11-13 14:22:38,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:22:38,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:22:38,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:22:38,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:22:38,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:22:35" (1/3) ... [2024-11-13 14:22:38,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67806dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:22:38, skipping insertion in model container [2024-11-13 14:22:38,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:36" (2/3) ... [2024-11-13 14:22:38,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67806dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:22:38, skipping insertion in model container [2024-11-13 14:22:38,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:22:38" (3/3) ... [2024-11-13 14:22:38,182 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2024-11-13 14:22:38,199 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:22:38,201 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG bubble_sort_linux-2.i that has 5 procedures, 116 locations, 1 initial locations, 23 loop locations, and 1 error locations. [2024-11-13 14:22:38,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:22:38,296 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;@575f36f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:22:38,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:22:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 87 states have (on average 1.7586206896551724) internal successors, (153), 106 states have internal predecessors, (153), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:22:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:22:38,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:38,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:38,309 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:38,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1598642791, now seen corresponding path program 1 times [2024-11-13 14:22:38,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:22:38,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255988269] [2024-11-13 14:22:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:38,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:38,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:38,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:38,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:22:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:38,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 14:22:38,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:22:38,501 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:22:38,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:22:38,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255988269] [2024-11-13 14:22:38,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255988269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:22:38,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:22:38,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:22:38,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636565857] [2024-11-13 14:22:38,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:22:38,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:22:38,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:22:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:22:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:22:38,540 INFO L87 Difference]: Start difference. First operand has 116 states, 87 states have (on average 1.7586206896551724) internal successors, (153), 106 states have internal predecessors, (153), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:22:38,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:38,596 INFO L93 Difference]: Finished difference Result 226 states and 393 transitions. [2024-11-13 14:22:38,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:22:38,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 14:22:38,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:38,608 INFO L225 Difference]: With dead ends: 226 [2024-11-13 14:22:38,608 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 14:22:38,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:22:38,621 INFO L432 NwaCegarLoop]: 134 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, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:38,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:22:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 14:22:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-13 14:22:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.25) internal successors, (100), 95 states have internal predecessors, (100), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:22:38,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2024-11-13 14:22:38,689 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 9 [2024-11-13 14:22:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:38,690 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2024-11-13 14:22:38,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:22:38,690 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2024-11-13 14:22:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:22:38,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:38,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:38,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:22:38,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:38,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:38,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 135441858, now seen corresponding path program 1 times [2024-11-13 14:22:38,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:22:38,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486947569] [2024-11-13 14:22:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:38,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:38,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:38,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:22:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:39,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:22:39,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:22:39,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:22:39,209 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:22:39,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486947569] [2024-11-13 14:22:39,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486947569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:22:39,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:22:39,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:22:39,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346575836] [2024-11-13 14:22:39,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:22:39,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:22:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:22:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:22:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:22:39,214 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:22:39,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:39,531 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2024-11-13 14:22:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:22:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-13 14:22:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:39,540 INFO L225 Difference]: With dead ends: 107 [2024-11-13 14:22:39,541 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 14:22:39,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:22:39,546 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 169 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:39,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 245 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:22:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 14:22:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-13 14:22:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.2375) internal successors, (99), 94 states have internal predecessors, (99), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:22:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2024-11-13 14:22:39,592 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2024-11-13 14:22:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:39,596 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2024-11-13 14:22:39,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:22:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2024-11-13 14:22:39,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 14:22:39,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:39,599 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:39,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:22:39,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:39,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:39,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:39,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1699616320, now seen corresponding path program 1 times [2024-11-13 14:22:39,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:22:39,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903059104] [2024-11-13 14:22:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:39,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:39,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:39,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:22:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:40,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 14:22:40,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:40,191 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:22:40,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:22:41,096 INFO L349 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2024-11-13 14:22:41,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 236 [2024-11-13 14:22:41,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 14:22:41,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 14:22:41,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 14:22:41,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 14:22:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:22:43,846 INFO L349 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2024-11-13 14:22:43,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 279 treesize of output 249 [2024-11-13 14:22:43,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 14:22:45,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:22:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:22:46,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:22:46,220 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:22:46,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903059104] [2024-11-13 14:22:46,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903059104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:22:46,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:22:46,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:22:46,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307402406] [2024-11-13 14:22:46,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:22:46,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:22:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:22:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:22:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:22:46,223 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:22:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:50,228 INFO L93 Difference]: Finished difference Result 195 states and 232 transitions. [2024-11-13 14:22:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:22:50,229 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-13 14:22:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:50,233 INFO L225 Difference]: With dead ends: 195 [2024-11-13 14:22:50,235 INFO L226 Difference]: Without dead ends: 189 [2024-11-13 14:22:50,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=258, Unknown=1, NotChecked=0, Total=342 [2024-11-13 14:22:50,237 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 356 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:50,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 568 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 14:22:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-13 14:22:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2024-11-13 14:22:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 141 states have (on average 1.24822695035461) internal successors, (176), 155 states have internal predecessors, (176), 23 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 14:22:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 206 transitions. [2024-11-13 14:22:50,297 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 206 transitions. Word has length 23 [2024-11-13 14:22:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:50,298 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 206 transitions. [2024-11-13 14:22:50,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:22:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 206 transitions. [2024-11-13 14:22:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 14:22:50,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:50,299 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:50,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:22:50,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:50,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:50,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash -359772177, now seen corresponding path program 1 times [2024-11-13 14:22:50,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:22:50,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771911392] [2024-11-13 14:22:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:50,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:50,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:50,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:50,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:22:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:50,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 14:22:50,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:50,766 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:22:50,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:22:50,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:22:50,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:22:51,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2024-11-13 14:22:51,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:22:51,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2024-11-13 14:22:51,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2024-11-13 14:22:51,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:22:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:22:51,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:22:51,551 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:22:51,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771911392] [2024-11-13 14:22:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771911392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:22:51,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:22:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:22:51,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636026428] [2024-11-13 14:22:51,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:22:51,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:22:51,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:22:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:22:51,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2024-11-13 14:22:51,552 INFO L87 Difference]: Start difference. First operand 169 states and 206 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:22:53,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:22:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:58,657 INFO L93 Difference]: Finished difference Result 272 states and 326 transitions. [2024-11-13 14:22:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:22:58,658 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-13 14:22:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:58,660 INFO L225 Difference]: With dead ends: 272 [2024-11-13 14:22:58,660 INFO L226 Difference]: Without dead ends: 269 [2024-11-13 14:22:58,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=209, Unknown=7, NotChecked=0, Total=272 [2024-11-13 14:22:58,661 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 221 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 33 mSolverCounterUnsat, 77 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 77 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:58,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 376 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 861 Invalid, 77 Unknown, 0 Unchecked, 6.6s Time] [2024-11-13 14:22:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-13 14:22:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 252. [2024-11-13 14:22:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 216 states have (on average 1.2407407407407407) internal successors, (268), 231 states have internal predecessors, (268), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:22:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 307 transitions. [2024-11-13 14:22:58,726 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 307 transitions. Word has length 26 [2024-11-13 14:22:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:58,726 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 307 transitions. [2024-11-13 14:22:58,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:22:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 307 transitions. [2024-11-13 14:22:58,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 14:22:58,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:58,728 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:58,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:22:58,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:58,932 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:58,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:58,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2019654096, now seen corresponding path program 1 times [2024-11-13 14:22:58,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:22:58,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130068935] [2024-11-13 14:22:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:58,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:58,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:58,936 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:58,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:22:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:59,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 14:22:59,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:59,170 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:22:59,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:22:59,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:22:59,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:23:00,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2024-11-13 14:23:00,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 14:23:00,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2024-11-13 14:23:00,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2024-11-13 14:23:00,741 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:23:00,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-13 14:23:01,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 14:23:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:01,196 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:23:01,196 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:23:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130068935] [2024-11-13 14:23:01,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130068935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:01,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:01,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 14:23:01,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299505057] [2024-11-13 14:23:01,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:01,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:23:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:23:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:23:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=107, Unknown=2, NotChecked=0, Total=132 [2024-11-13 14:23:01,198 INFO L87 Difference]: Start difference. First operand 252 states and 307 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:23:06,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:12,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:15,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:15,142 INFO L93 Difference]: Finished difference Result 271 states and 324 transitions. [2024-11-13 14:23:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:23:15,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-13 14:23:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:15,144 INFO L225 Difference]: With dead ends: 271 [2024-11-13 14:23:15,144 INFO L226 Difference]: Without dead ends: 268 [2024-11-13 14:23:15,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=57, Invalid=247, Unknown=2, NotChecked=0, Total=306 [2024-11-13 14:23:15,145 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 262 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 31 mSolverCounterUnsat, 80 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 80 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:15,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 439 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 848 Invalid, 80 Unknown, 0 Unchecked, 13.4s Time] [2024-11-13 14:23:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-13 14:23:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 252. [2024-11-13 14:23:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 216 states have (on average 1.2361111111111112) internal successors, (267), 231 states have internal predecessors, (267), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:23:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 306 transitions. [2024-11-13 14:23:15,205 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 306 transitions. Word has length 29 [2024-11-13 14:23:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:15,206 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 306 transitions. [2024-11-13 14:23:15,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:23:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 306 transitions. [2024-11-13 14:23:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 14:23:15,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:15,208 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:15,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:23:15,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:15,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:15,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash -912078886, now seen corresponding path program 1 times [2024-11-13 14:23:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:23:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604372254] [2024-11-13 14:23:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:15,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:15,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:15,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:15,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:23:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:15,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 14:23:15,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:15,665 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:23:15,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:23:15,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:23:15,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:23:17,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2024-11-13 14:23:17,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 78 [2024-11-13 14:23:17,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2024-11-13 14:23:17,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:23:17,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2024-11-13 14:23:17,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2024-11-13 14:23:18,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:23:18,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2024-11-13 14:23:18,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2024-11-13 14:23:18,056 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:23:18,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2024-11-13 14:23:18,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 34 [2024-11-13 14:23:18,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2024-11-13 14:23:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:19,179 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:23:19,180 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:23:19,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604372254] [2024-11-13 14:23:19,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604372254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:19,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:19,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 14:23:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312129544] [2024-11-13 14:23:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:19,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:23:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:23:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:23:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=109, Unknown=2, NotChecked=0, Total=132 [2024-11-13 14:23:19,181 INFO L87 Difference]: Start difference. First operand 252 states and 306 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:23:27,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:31,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:36,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:40,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:44,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:48,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:54,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:23:58,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:24:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:00,065 INFO L93 Difference]: Finished difference Result 270 states and 322 transitions. [2024-11-13 14:24:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:24:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-13 14:24:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:00,072 INFO L225 Difference]: With dead ends: 270 [2024-11-13 14:24:00,072 INFO L226 Difference]: Without dead ends: 267 [2024-11-13 14:24:00,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=270, Unknown=7, NotChecked=0, Total=342 [2024-11-13 14:24:00,073 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 253 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 28 mSolverCounterUnsat, 87 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 87 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:00,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 458 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 926 Invalid, 87 Unknown, 0 Unchecked, 40.2s Time] [2024-11-13 14:24:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-13 14:24:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 252. [2024-11-13 14:24:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 216 states have (on average 1.2314814814814814) internal successors, (266), 231 states have internal predecessors, (266), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:24:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 305 transitions. [2024-11-13 14:24:00,129 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 305 transitions. Word has length 32 [2024-11-13 14:24:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:00,130 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 305 transitions. [2024-11-13 14:24:00,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:24:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 305 transitions. [2024-11-13 14:24:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:24:00,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:00,131 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:00,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:24:00,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:00,333 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:00,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:00,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1995005827, now seen corresponding path program 1 times [2024-11-13 14:24:00,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:24:00,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758521608] [2024-11-13 14:24:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:00,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:00,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:00,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:00,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:24:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:00,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 14:24:00,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:00,589 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:24:00,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:24:00,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:24:00,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:24:03,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2024-11-13 14:24:03,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-11-13 14:24:03,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 61 [2024-11-13 14:24:03,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-13 14:24:03,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 24 [2024-11-13 14:24:03,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-13 14:24:03,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 69 [2024-11-13 14:24:03,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 82 [2024-11-13 14:24:04,454 INFO L349 Elim1Store]: treesize reduction 32, result has 30.4 percent of original size [2024-11-13 14:24:04,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 124 [2024-11-13 14:24:04,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-13 14:24:04,485 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:24:04,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 52 [2024-11-13 14:24:06,008 INFO L349 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2024-11-13 14:24:06,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 71 treesize of output 29 [2024-11-13 14:24:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:06,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:24:06,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:24:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758521608] [2024-11-13 14:24:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758521608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:24:06,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:24:06,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 14:24:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725286563] [2024-11-13 14:24:06,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:24:06,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:24:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:24:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:24:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:24:06,124 INFO L87 Difference]: Start difference. First operand 252 states and 305 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:24:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:23,654 INFO L93 Difference]: Finished difference Result 269 states and 320 transitions. [2024-11-13 14:24:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:24:23,655 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-11-13 14:24:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:23,658 INFO L225 Difference]: With dead ends: 269 [2024-11-13 14:24:23,658 INFO L226 Difference]: Without dead ends: 266 [2024-11-13 14:24:23,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:24:23,659 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 246 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:23,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 475 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 912 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2024-11-13 14:24:23,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-13 14:24:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 252. [2024-11-13 14:24:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 216 states have (on average 1.2268518518518519) internal successors, (265), 231 states have internal predecessors, (265), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:24:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 304 transitions. [2024-11-13 14:24:23,732 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 304 transitions. Word has length 35 [2024-11-13 14:24:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:23,733 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 304 transitions. [2024-11-13 14:24:23,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:24:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 304 transitions. [2024-11-13 14:24:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:24:23,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:23,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:23,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:24:23,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:23,935 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:23,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash -638552515, now seen corresponding path program 1 times [2024-11-13 14:24:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:24:23,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770986972] [2024-11-13 14:24:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:23,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:23,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:23,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:23,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:24:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:24,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-13 14:24:24,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:24,284 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:24:24,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:24:24,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:24:24,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:24:30,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:24:30,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-13 14:24:30,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 14:24:30,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2024-11-13 14:24:30,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 57 [2024-11-13 14:24:30,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 62 [2024-11-13 14:24:30,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 34 [2024-11-13 14:24:30,653 INFO L349 Elim1Store]: treesize reduction 41, result has 10.9 percent of original size [2024-11-13 14:24:30,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 102 [2024-11-13 14:24:30,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-13 14:24:30,699 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:24:30,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-13 14:24:30,943 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:24:30,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:24:31,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 14:24:31,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2024-11-13 14:24:31,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:24:31,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:24:31,819 INFO L349 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2024-11-13 14:24:31,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 45 [2024-11-13 14:24:31,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2024-11-13 14:24:31,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-13 14:24:32,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:24:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:34,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:36,745 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_454 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_455 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_453 (_ BitVec 32))) (not (= (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| (select (select |c_#memory_$Pointer$#1.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_454))) (store .cse0 |c_~#gl_list~0.base| (store (select (store .cse0 |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_455) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_453))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_445) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) |c_~#gl_list~0.offset|))) is different from false [2024-11-13 14:24:36,748 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:24:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770986972] [2024-11-13 14:24:36,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770986972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1355105093] [2024-11-13 14:24:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:36,749 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:24:36,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:24:36,753 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:24:36,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-13 14:24:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:37,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-13 14:24:37,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:37,930 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:24:37,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:24:38,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:24:38,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:24:44,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2024-11-13 14:24:44,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2024-11-13 14:24:44,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2024-11-13 14:24:44,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2024-11-13 14:24:44,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:24:44,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2024-11-13 14:24:44,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:24:44,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2024-11-13 14:24:45,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2024-11-13 14:24:45,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-13 14:24:45,980 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:24:45,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:24:46,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 19 [2024-11-13 14:24:46,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 14:24:47,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:24:47,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:24:47,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:24:47,071 INFO L349 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2024-11-13 14:24:47,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 45 [2024-11-13 14:24:47,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2024-11-13 14:24:47,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2024-11-13 14:24:47,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:24:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:47,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:47,300 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_566 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_~#gl_list~0.offset| (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_566) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))))) is different from false [2024-11-13 14:24:47,541 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_list_add___list_add_~new#1.offset_30| (_ BitVec 32)) (v_ArrVal_566 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_573 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| (select (select |c_#memory_$Pointer$#1.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_572))) (store .cse0 |c_~#gl_list~0.base| (store (select (store .cse0 |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_573) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| |v_list_add___list_add_~new#1.offset_30|))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_566) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) |c_~#gl_list~0.offset|))) is different from false [2024-11-13 14:24:47,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1355105093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:47,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:24:47,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 19 [2024-11-13 14:24:47,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418387304] [2024-11-13 14:24:47,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:47,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:24:47,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:24:47,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:24:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=487, Unknown=33, NotChecked=144, Total=756 [2024-11-13 14:24:47,546 INFO L87 Difference]: Start difference. First operand 252 states and 304 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 14:25:10,876 WARN L286 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 109 DAG size of output: 94 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:25:16,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:25:23,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:25:28,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:25:35,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:25:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:51,935 INFO L93 Difference]: Finished difference Result 366 states and 434 transitions. [2024-11-13 14:25:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:25:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-13 14:25:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:51,940 INFO L225 Difference]: With dead ends: 366 [2024-11-13 14:25:51,940 INFO L226 Difference]: Without dead ends: 363 [2024-11-13 14:25:51,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=224, Invalid=1072, Unknown=48, NotChecked=216, Total=1560 [2024-11-13 14:25:51,943 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 589 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 96 mSolverCounterUnsat, 254 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 254 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:51,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 459 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1369 Invalid, 254 Unknown, 0 Unchecked, 40.6s Time] [2024-11-13 14:25:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-13 14:25:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 335. [2024-11-13 14:25:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 291 states have (on average 1.2268041237113403) internal successors, (357), 307 states have internal predecessors, (357), 33 states have call successors, (33), 12 states have call predecessors, (33), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 14:25:52,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 405 transitions. [2024-11-13 14:25:52,024 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 405 transitions. Word has length 38 [2024-11-13 14:25:52,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:52,024 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 405 transitions. [2024-11-13 14:25:52,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 14:25:52,025 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 405 transitions. [2024-11-13 14:25:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:25:52,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:52,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:52,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-13 14:25:52,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:25:52,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:52,427 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:52,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash 337139434, now seen corresponding path program 1 times [2024-11-13 14:25:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:25:52,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104034926] [2024-11-13 14:25:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:52,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:52,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:52,429 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:52,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:25:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:52,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 14:25:52,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:52,768 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:25:52,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:25:52,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:25:52,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:25:53,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2024-11-13 14:25:53,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-11-13 14:25:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:25:53,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 14 [2024-11-13 14:25:53,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2024-11-13 14:25:53,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 14:25:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:54,102 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:25:54,102 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:25:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104034926] [2024-11-13 14:25:54,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104034926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:25:54,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:25:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 14:25:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155399439] [2024-11-13 14:25:54,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:25:54,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:25:54,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:25:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:25:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=109, Unknown=1, NotChecked=0, Total=132 [2024-11-13 14:25:54,104 INFO L87 Difference]: Start difference. First operand 335 states and 405 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:00,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:04,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:08,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:12,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:16,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:21,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:25,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:29,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:33,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:38,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:42,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:46,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:26:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:47,607 INFO L93 Difference]: Finished difference Result 348 states and 416 transitions. [2024-11-13 14:26:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:26:47,608 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2024-11-13 14:26:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:47,610 INFO L225 Difference]: With dead ends: 348 [2024-11-13 14:26:47,610 INFO L226 Difference]: Without dead ends: 345 [2024-11-13 14:26:47,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=297, Unknown=8, NotChecked=0, Total=380 [2024-11-13 14:26:47,611 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 284 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 26 mSolverCounterUnsat, 82 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 82 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:47,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 503 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 846 Invalid, 82 Unknown, 0 Unchecked, 52.8s Time] [2024-11-13 14:26:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-13 14:26:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 335. [2024-11-13 14:26:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 291 states have (on average 1.2233676975945018) internal successors, (356), 307 states have internal predecessors, (356), 33 states have call successors, (33), 12 states have call predecessors, (33), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 14:26:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 404 transitions. [2024-11-13 14:26:47,692 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 404 transitions. Word has length 38 [2024-11-13 14:26:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:47,692 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 404 transitions. [2024-11-13 14:26:47,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 404 transitions. [2024-11-13 14:26:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 14:26:47,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:47,694 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:47,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:26:47,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:47,894 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:47,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash -953612094, now seen corresponding path program 1 times [2024-11-13 14:26:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:26:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638201118] [2024-11-13 14:26:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:47,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:47,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:47,897 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:47,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:26:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:48,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-13 14:26:48,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:48,262 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:26:48,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:26:48,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:26:48,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:27:02,165 WARN L286 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 113 DAG size of output: 110 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:27:02,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 14:27:02,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2024-11-13 14:27:14,771 WARN L286 SmtUtils]: Spent 10.37s on a formula simplification. DAG size of input: 106 DAG size of output: 100 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:27:15,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2024-11-13 14:27:15,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2024-11-13 14:27:15,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:27:15,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-13 14:27:15,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 14:27:19,943 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:27:19,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 38 [2024-11-13 14:27:19,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-13 14:27:20,936 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:27:20,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:27:22,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:27:22,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2024-11-13 14:27:27,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:27:27,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:27:27,596 INFO L349 Elim1Store]: treesize reduction 84, result has 29.4 percent of original size [2024-11-13 14:27:27,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 172 [2024-11-13 14:27:27,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 57 [2024-11-13 14:27:27,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2024-11-13 14:27:27,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:27:27,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2024-11-13 14:27:27,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:27:27,822 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:27:27,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-13 14:27:28,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 52 [2024-11-13 14:27:33,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2024-11-13 14:27:33,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-13 14:27:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:36,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:45,633 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_740 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_740) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) (_ bv0 32)))) is different from false [2024-11-13 14:27:46,493 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_list_add___list_add_~new#1.offset_41| (_ BitVec 32)) (v_ArrVal_740 (Array (_ BitVec 32) (_ BitVec 32))) (|v_list_add___list_add_~next#1.offset_38| (_ BitVec 32)) (v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| (select (select |c_#memory_$Pointer$#1.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_745))) (store .cse0 |c_~#gl_list~0.base| (store (select (store .cse0 |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (store (select .cse0 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) |v_list_add___list_add_~new#1.offset_41| |v_list_add___list_add_~next#1.offset_38|) (bvadd (_ bv4 32) |v_list_add___list_add_~new#1.offset_41|) |c_~#gl_list~0.offset|)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| |v_list_add___list_add_~new#1.offset_41|))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_740) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))))) is different from false [2024-11-13 14:27:46,503 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638201118] [2024-11-13 14:27:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638201118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [977285365] [2024-11-13 14:27:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:27:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:27:46,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:27:46,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7917e8ae-e54e-4247-9140-956800de58e7/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-13 14:27:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:47,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-13 14:27:47,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:47,759 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:27:47,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:27:47,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:27:47,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:27:54,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2024-11-13 14:27:54,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2024-11-13 14:27:54,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:27:54,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-13 14:27:55,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 14:27:59,097 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:27:59,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 64 [2024-11-13 14:27:59,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:27:59,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 14 [2024-11-13 14:27:59,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2024-11-13 14:27:59,382 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:27:59,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:27:59,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:27:59,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2024-11-13 14:28:05,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 14:28:05,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2024-11-13 14:28:18,410 INFO L349 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2024-11-13 14:28:18,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 265 [2024-11-13 14:28:18,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 244 treesize of output 160 [2024-11-13 14:28:18,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-13 14:28:20,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:28:20,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:28:20,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 142 [2024-11-13 14:28:20,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:28:20,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:28:20,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:28:20,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 47 [2024-11-13 14:28:20,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 14:28:20,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-13 14:28:26,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:28:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:27,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:27,301 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_861 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_861) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))))) is different from false [2024-11-13 14:28:35,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [977285365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:35,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:28:35,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 21 [2024-11-13 14:28:35,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957894847] [2024-11-13 14:28:35,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:35,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:28:35,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:28:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=593, Unknown=25, NotChecked=156, Total=870 [2024-11-13 14:28:35,899 INFO L87 Difference]: Start difference. First operand 335 states and 404 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:28:40,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:28:48,368 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_old(#memory_$Pointer$#1.base)| |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|))) (let ((.cse12 (= |c_list_add_#in~new#1.base| |c_list_add_#in~head#1.base|)) (.cse6 (= .cse4 |c_list_add_#in~head#1.base|)) (.cse10 (= |c_list_add_#in~new#1.base| .cse4))) (let ((.cse0 (not .cse10)) (.cse5 (not .cse6)) (.cse15 (store |c_old(#memory_$Pointer$#1.offset)| .cse4 (store (select |c_old(#memory_$Pointer$#1.offset)| .cse4) (bvadd (_ bv4 32) (select (select |c_old(#memory_$Pointer$#1.offset)| |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|)) |c_list_add_#in~new#1.offset|))) (.cse9 (not .cse12)) (.cse18 (select |c_#memory_$Pointer$#1.offset| |c_list_add_#in~new#1.base|)) (.cse14 (select (select |c_#memory_$Pointer$#1.offset| |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|))) (and (let ((.cse2 (select |c_#memory_$Pointer$#1.base| |c_list_add_#in~new#1.base|)) (.cse11 (bvadd (_ bv4 32) |c_list_add_#in~new#1.offset|))) (let ((.cse3 (store (store (select |c_old(#memory_$Pointer$#1.base)| |c_list_add_#in~new#1.base|) |c_list_add_#in~new#1.offset| .cse4) .cse11 |c_list_add_#in~head#1.base|)) (.cse7 (and .cse12 (exists ((v_ArrVal_731 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$#1.base)| |c_list_add_#in~head#1.base| (store (select (store (store |c_old(#memory_$Pointer$#1.base)| .cse4 v_ArrVal_731) |c_list_add_#in~new#1.base| (store (store v_ArrVal_731 |c_list_add_#in~new#1.offset| .cse4) .cse11 |c_list_add_#in~head#1.base|)) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|)) |c_#memory_$Pointer$#1.base|)))) (.cse8 (store |c_old(#memory_$Pointer$#1.base)| |c_list_add_#in~new#1.base| .cse2))) (or (and .cse0 (= (let ((.cse1 (store |c_old(#memory_$Pointer$#1.base)| .cse4 (select |c_#memory_$Pointer$#1.base| .cse4)))) (store (store .cse1 |c_list_add_#in~new#1.base| .cse2) |c_list_add_#in~head#1.base| (store (select (store .cse1 |c_list_add_#in~new#1.base| .cse3) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|))) |c_#memory_$Pointer$#1.base|) .cse5) (and .cse6 (or .cse7 (and (exists ((v_ArrVal_731 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store .cse8 |c_list_add_#in~head#1.base| (store (select (store (store |c_old(#memory_$Pointer$#1.base)| .cse4 v_ArrVal_731) |c_list_add_#in~new#1.base| .cse3) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|)) |c_#memory_$Pointer$#1.base|)) .cse9))) (and .cse10 (or .cse7 (and (exists ((v_ArrVal_731 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store .cse8 |c_list_add_#in~head#1.base| (store (select (store (store |c_old(#memory_$Pointer$#1.base)| .cse4 v_ArrVal_731) |c_list_add_#in~new#1.base| (store (store v_ArrVal_731 |c_list_add_#in~new#1.offset| .cse4) .cse11 |c_list_add_#in~head#1.base|)) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|)) |c_#memory_$Pointer$#1.base|)) .cse9)))))) (= (_ bv0 32) |c_~#gl_list~0.offset|) (exists ((v_ArrVal_846 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse13 (store .cse15 |c_list_add_#in~new#1.base| v_ArrVal_846))) (store .cse13 |c_list_add_#in~head#1.base| (store (select .cse13 |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| .cse14))) |c_#memory_$Pointer$#1.offset|)) (let ((.cse16 (store |c_old(#memory_$Pointer$#1.offset)| .cse4 (select |c_#memory_$Pointer$#1.offset| .cse4)))) (or (and .cse12 (or (and (exists ((v_ArrVal_726 (_ BitVec 32)) (v_ArrVal_732 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store .cse16 |c_list_add_#in~head#1.base| (store v_ArrVal_732 |c_list_add_#in~head#1.offset| v_ArrVal_726)) |c_#memory_$Pointer$#1.offset|)) .cse5) (and (exists ((v_ArrVal_726 (_ BitVec 32)) (v_ArrVal_732 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$#1.offset)| |c_list_add_#in~head#1.base| (store v_ArrVal_732 |c_list_add_#in~head#1.offset| v_ArrVal_726)) |c_#memory_$Pointer$#1.offset|)) .cse6))) (and .cse9 (let ((.cse19 (select .cse15 |c_list_add_#in~head#1.base|))) (let ((.cse17 (exists ((v_ArrVal_726 (_ BitVec 32))) (= |c_#memory_$Pointer$#1.offset| (store (store |c_old(#memory_$Pointer$#1.offset)| |c_list_add_#in~new#1.base| .cse18) |c_list_add_#in~head#1.base| (store .cse19 |c_list_add_#in~head#1.offset| v_ArrVal_726)))))) (or (and .cse10 .cse17) (and .cse17 .cse6) (and (exists ((v_ArrVal_726 (_ BitVec 32))) (= |c_#memory_$Pointer$#1.offset| (store (store .cse16 |c_list_add_#in~new#1.base| .cse18) |c_list_add_#in~head#1.base| (store .cse19 |c_list_add_#in~head#1.offset| v_ArrVal_726)))) .cse0 .cse5))))))) (= (_ bv3 32) |c_~#gl_list~0.base|) (exists ((v_ArrVal_850 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse20 (store (store |c_old(#memory_$Pointer$#1.base)| .cse4 v_ArrVal_851) |c_list_add_#in~new#1.base| v_ArrVal_850))) (store .cse20 |c_list_add_#in~head#1.base| (store (select .cse20 |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|))) |c_#memory_$Pointer$#1.base|)) (let ((.cse21 (= .cse14 |c_list_add_#in~head#1.offset|)) (.cse24 (bvadd (_ bv4 32) .cse14))) (or (and (or .cse9 (not .cse21)) (exists ((v_ArrVal_738 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse22 (let ((.cse23 (store |c_old(#memory_$Pointer$#1.offset)| .cse4 v_ArrVal_738))) (store .cse23 |c_list_add_#in~new#1.base| (store (store (select .cse23 |c_list_add_#in~new#1.base|) .cse14 (select .cse18 .cse14)) .cse24 |c_list_add_#in~head#1.offset|))))) (store .cse22 |c_list_add_#in~head#1.base| (store (select .cse22 |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| .cse14))) |c_#memory_$Pointer$#1.offset|))) (and .cse12 .cse21 (exists ((v_ArrVal_738 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse25 (let ((.cse26 (store |c_old(#memory_$Pointer$#1.offset)| .cse4 v_ArrVal_738))) (store .cse26 |c_list_add_#in~new#1.base| (store (select .cse26 |c_list_add_#in~new#1.base|) .cse24 |c_list_add_#in~head#1.offset|))))) (store .cse25 |c_list_add_#in~head#1.base| (store (select .cse25 |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| .cse14))) |c_#memory_$Pointer$#1.offset|))))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (_ bv3 32)))))))) is different from true [2024-11-13 14:30:27,493 WARN L286 SmtUtils]: Spent 1.23m on a formula simplification. DAG size of input: 143 DAG size of output: 135 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:30:31,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:30:35,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:30:40,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:30:48,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:30:52,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:30:55,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:00,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:04,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:08,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:18,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:31,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:39,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:42,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:46,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:31:50,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:05,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:08,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:10,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:12,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:22,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:27,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:33,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:35,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:39,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:48,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:52,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:32:56,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:00,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:04,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:08,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:10,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:11,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:15,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:21,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:25,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:30,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:40,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:45,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:50,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:53,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:58,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:34:02,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:34:06,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:34:11,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:34:14,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]