./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/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 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:26:37,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:26:37,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:26:37,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:26:37,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:26:37,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:26:37,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:26:37,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:26:37,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:26:37,319 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:26:37,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:26:37,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:26:37,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:26:37,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:26:37,320 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:26:37,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:26:37,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:26:37,320 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:26:37,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:26:37,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:26:37,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:26:37,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:26:37,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:26:37,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:26:37,321 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:26:37,321 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:26:37,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:26:37,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:26:37,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:26:37,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:26:37,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:26:37,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:26:37,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:26:37,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:26:37,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:26:37,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:26:37,323 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:26:37,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:26:37,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:26:37,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:26:37,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:26:37,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:26:37,324 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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/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 -> 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 [2024-11-13 16:26:37,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:26:37,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:26:37,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:26:37,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:26:37,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:26:37,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i Unable to find full path for "g++" [2024-11-13 16:26:39,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:26:39,879 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:26:39,880 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2024-11-13 16:26:39,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/data/be8eecd2b/c7094707da1c48e0ab99d9fb7bde2d53/FLAG6b2d26afc [2024-11-13 16:26:39,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/data/be8eecd2b/c7094707da1c48e0ab99d9fb7bde2d53 [2024-11-13 16:26:39,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:26:39,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:26:39,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:26:39,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:26:39,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:26:39,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:26:39" (1/1) ... [2024-11-13 16:26:39,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3617334c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:39, skipping insertion in model container [2024-11-13 16:26:39,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:26:39" (1/1) ... [2024-11-13 16:26:39,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:26:40,273 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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i[24620,24633] [2024-11-13 16:26:40,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:26:40,284 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:26:40,331 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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i[24620,24633] [2024-11-13 16:26:40,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:26:40,359 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:26:40,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40 WrapperNode [2024-11-13 16:26:40,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:26:40,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:26:40,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:26:40,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:26:40,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,400 INFO L138 Inliner]: procedures = 128, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 146 [2024-11-13 16:26:40,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:26:40,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:26:40,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:26:40,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:26:40,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,433 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 13, 5]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 6 writes are split as follows [0, 5, 1]. [2024-11-13 16:26:40,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:26:40,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:26:40,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:26:40,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:26:40,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (1/1) ... [2024-11-13 16:26:40,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:26:40,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:40,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:26:40,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:26:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:26:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-13 16:26:40,537 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:26:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 16:26:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:26:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:26:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 16:26:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:26:40,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:26:40,670 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:26:40,671 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:26:40,921 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-13 16:26:40,922 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:26:40,931 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:26:40,931 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 16:26:40,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:26:40 BoogieIcfgContainer [2024-11-13 16:26:40,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:26:40,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:26:40,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:26:40,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:26:40,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:26:39" (1/3) ... [2024-11-13 16:26:40,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16aefe3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:26:40, skipping insertion in model container [2024-11-13 16:26:40,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:26:40" (2/3) ... [2024-11-13 16:26:40,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16aefe3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:26:40, skipping insertion in model container [2024-11-13 16:26:40,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:26:40" (3/3) ... [2024-11-13 16:26:40,948 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2024-11-13 16:26:40,971 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:26:40,973 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2n_insert_unequal.i that has 2 procedures, 33 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-13 16:26:41,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:26:41,057 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;@2064b0d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:26:41,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:26:41,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 29 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:26:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:26:41,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:41,069 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:41,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:26:41,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash -324032319, now seen corresponding path program 1 times [2024-11-13 16:26:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650160210] [2024-11-13 16:26:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:41,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:26:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:41,620 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 16:26:41,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:41,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650160210] [2024-11-13 16:26:41,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650160210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:26:41,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:26:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:26:41,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820694507] [2024-11-13 16:26:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:26:41,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:26:41,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:26:41,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:26:41,657 INFO L87 Difference]: Start difference. First operand has 33 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 29 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:26:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:41,773 INFO L93 Difference]: Finished difference Result 64 states and 96 transitions. [2024-11-13 16:26:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:26:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-13 16:26:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:41,782 INFO L225 Difference]: With dead ends: 64 [2024-11-13 16:26:41,784 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 16:26:41,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:26:41,791 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 1 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:41,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:26:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 16:26:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-13 16:26:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:26:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2024-11-13 16:26:41,837 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 19 [2024-11-13 16:26:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:41,838 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-11-13 16:26:41,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:26:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2024-11-13 16:26:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:26:41,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:41,842 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:41,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:26:41,843 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:26:41,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash -859165895, now seen corresponding path program 1 times [2024-11-13 16:26:41,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:41,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940579977] [2024-11-13 16:26:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:42,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:26:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:42,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 16:26:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:26:42,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940579977] [2024-11-13 16:26:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940579977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:26:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622760455] [2024-11-13 16:26:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:42,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:42,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:42,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:26:42,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:26:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:42,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:26:42,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:26:42,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:26:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:26:42,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622760455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:26:42,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:26:42,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2024-11-13 16:26:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016499032] [2024-11-13 16:26:42,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:26:42,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:26:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:26:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:26:42,589 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:26:42,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:42,680 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-13 16:26:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:26:42,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-11-13 16:26:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:42,682 INFO L225 Difference]: With dead ends: 53 [2024-11-13 16:26:42,682 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 16:26:42,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:26:42,683 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:42,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 136 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:26:42,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 16:26:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 16:26:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:26:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-13 16:26:42,697 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 27 [2024-11-13 16:26:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:42,698 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-13 16:26:42,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:26:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-13 16:26:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 16:26:42,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:42,699 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:42,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:26:42,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:42,901 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:26:42,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash 861320625, now seen corresponding path program 2 times [2024-11-13 16:26:42,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:42,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873699416] [2024-11-13 16:26:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:26:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 16:26:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:26:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:26:43,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:43,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873699416] [2024-11-13 16:26:43,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873699416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:26:43,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:26:43,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:26:43,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559425862] [2024-11-13 16:26:43,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:26:43,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:26:43,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:26:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:26:43,127 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:26:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:43,181 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-11-13 16:26:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:26:43,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2024-11-13 16:26:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:43,183 INFO L225 Difference]: With dead ends: 44 [2024-11-13 16:26:43,183 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 16:26:43,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:26:43,184 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:43,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:26:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 16:26:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-13 16:26:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:26:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-11-13 16:26:43,197 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 35 [2024-11-13 16:26:43,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:43,198 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-11-13 16:26:43,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:26:43,199 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-13 16:26:43,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 16:26:43,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:43,200 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:43,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:26:43,201 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:26:43,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:43,201 INFO L85 PathProgramCache]: Analyzing trace with hash 918578927, now seen corresponding path program 1 times [2024-11-13 16:26:43,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:43,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108523324] [2024-11-13 16:26:43,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:43,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:26:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 16:26:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:26:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 16:26:43,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:43,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108523324] [2024-11-13 16:26:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108523324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:26:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374918261] [2024-11-13 16:26:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:43,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:43,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:43,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:26:43,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:26:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:43,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:26:43,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:26:43,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:26:43,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374918261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:26:43,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:26:43,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-13 16:26:43,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258090872] [2024-11-13 16:26:43,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:26:43,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:26:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:43,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:26:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:26:43,887 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:26:43,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:43,918 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-11-13 16:26:43,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:26:43,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-13 16:26:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:43,919 INFO L225 Difference]: With dead ends: 46 [2024-11-13 16:26:43,919 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 16:26:43,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:26:43,920 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:43,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:26:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 16:26:43,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-13 16:26:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:26:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-11-13 16:26:43,930 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 35 [2024-11-13 16:26:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:43,931 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-11-13 16:26:43,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:26:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-11-13 16:26:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:26:43,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:43,933 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:43,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:26:44,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:44,134 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:26:44,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1495087931, now seen corresponding path program 1 times [2024-11-13 16:26:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:44,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526989548] [2024-11-13 16:26:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:44,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:45,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:26:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:45,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 16:26:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:46,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:26:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:26:46,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526989548] [2024-11-13 16:26:46,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526989548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:26:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368430773] [2024-11-13 16:26:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:46,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:46,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:46,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:26:46,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:26:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:46,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-13 16:26:46,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:46,719 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 6 treesize of output 5 [2024-11-13 16:26:46,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:26:46,864 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 11 [2024-11-13 16:26:47,089 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 9 treesize of output 3 [2024-11-13 16:26:47,103 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 11 treesize of output 3 [2024-11-13 16:26:47,382 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 16:26:47,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-13 16:26:47,430 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 16:26:47,430 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 15 treesize of output 15 [2024-11-13 16:26:47,824 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 39 treesize of output 15 [2024-11-13 16:26:47,929 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 20 treesize of output 15 [2024-11-13 16:26:48,021 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 19 treesize of output 11 [2024-11-13 16:26:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:26:48,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:26:48,135 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_577 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_577) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) is different from false [2024-11-13 16:27:01,488 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_576 Int) (v_ArrVal_577 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~last~0#1.base| (store (select |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~last~0#1.base|) (+ |c_ULTIMATE.start_sll_insert_~last~0#1.offset| 4) v_ArrVal_576)) |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_577) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) is different from false [2024-11-13 16:27:01,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368430773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:01,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:27:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2024-11-13 16:27:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144751015] [2024-11-13 16:27:01,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:27:01,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 16:27:01,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:27:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 16:27:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1203, Unknown=19, NotChecked=142, Total=1482 [2024-11-13 16:27:01,795 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 34 states, 32 states have (on average 1.5625) internal successors, (50), 28 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:27:03,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:27:03,231 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-11-13 16:27:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 16:27:03,232 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.5625) internal successors, (50), 28 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2024-11-13 16:27:03,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:27:03,232 INFO L225 Difference]: With dead ends: 58 [2024-11-13 16:27:03,232 INFO L226 Difference]: Without dead ends: 56 [2024-11-13 16:27:03,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=172, Invalid=1979, Unknown=19, NotChecked=182, Total=2352 [2024-11-13 16:27:03,235 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:27:03,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 346 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:27:03,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-13 16:27:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2024-11-13 16:27:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:27:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-13 16:27:03,245 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 36 [2024-11-13 16:27:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:27:03,245 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-13 16:27:03,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.5625) internal successors, (50), 28 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:27:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-13 16:27:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:27:03,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:27:03,246 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:27:03,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 16:27:03,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:03,447 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:27:03,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:27:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1552346233, now seen corresponding path program 1 times [2024-11-13 16:27:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:27:03,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542572104] [2024-11-13 16:27:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:27:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:03,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:27:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:03,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 16:27:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:03,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:27:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 16:27:03,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:03,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542572104] [2024-11-13 16:27:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542572104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:03,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134784287] [2024-11-13 16:27:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:03,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:03,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:03,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:03,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:27:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:04,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-13 16:27:04,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:27:04,179 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 6 treesize of output 5 [2024-11-13 16:27:04,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-13 16:27:04,359 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 23 treesize of output 11 [2024-11-13 16:27:04,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 9 treesize of output 3 [2024-11-13 16:27:04,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2024-11-13 16:27:04,973 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 16:27:04,974 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 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-13 16:27:05,019 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 16:27:05,019 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 15 treesize of output 15 [2024-11-13 16:27:05,523 INFO L349 Elim1Store]: treesize reduction 67, result has 29.5 percent of original size [2024-11-13 16:27:05,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 50 [2024-11-13 16:27:05,568 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2024-11-13 16:27:05,569 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 2 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:27:05,906 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 20 treesize of output 15 [2024-11-13 16:27:06,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:06,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 106 [2024-11-13 16:27:06,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:06,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 151 [2024-11-13 16:27:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:27:08,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:27:09,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134784287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:09,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:27:09,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19] total 28 [2024-11-13 16:27:09,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359111888] [2024-11-13 16:27:09,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:27:09,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 16:27:09,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:27:09,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 16:27:09,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1156, Unknown=12, NotChecked=0, Total=1260 [2024-11-13 16:27:09,395 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 23 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:27:14,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:27:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:27:14,789 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2024-11-13 16:27:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 16:27:14,790 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 23 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2024-11-13 16:27:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:27:14,792 INFO L225 Difference]: With dead ends: 56 [2024-11-13 16:27:14,792 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 16:27:14,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=156, Invalid=1994, Unknown=12, NotChecked=0, Total=2162 [2024-11-13 16:27:14,794 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:27:14,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 471 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 570 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 16:27:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 16:27:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-13 16:27:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:27:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-11-13 16:27:14,810 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 36 [2024-11-13 16:27:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:27:14,813 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-11-13 16:27:14,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 23 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:27:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-11-13 16:27:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:27:14,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:27:14,814 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:27:14,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:27:15,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 16:27:15,014 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:27:15,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:27:15,015 INFO L85 PathProgramCache]: Analyzing trace with hash -896969261, now seen corresponding path program 1 times [2024-11-13 16:27:15,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:27:15,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922674120] [2024-11-13 16:27:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:15,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:27:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:15,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:27:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:15,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 16:27:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:15,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:27:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 16:27:15,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922674120] [2024-11-13 16:27:15,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922674120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773887127] [2024-11-13 16:27:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:15,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:15,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:15,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:15,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:27:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:15,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 16:27:15,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:27:15,766 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 16 treesize of output 8 [2024-11-13 16:27:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:27:15,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:27:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 16:27:15,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773887127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:27:15,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:27:15,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 16 [2024-11-13 16:27:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969411427] [2024-11-13 16:27:15,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:27:15,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 16:27:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:27:15,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 16:27:15,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:27:15,912 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:27:19,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:27:23,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:27:28,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:27:32,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:27:36,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:27:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:27:36,301 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-11-13 16:27:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:27:36,302 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2024-11-13 16:27:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:27:36,302 INFO L225 Difference]: With dead ends: 64 [2024-11-13 16:27:36,303 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 16:27:36,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:27:36,303 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 23 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:27:36,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 361 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 242 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2024-11-13 16:27:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 16:27:36,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2024-11-13 16:27:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:27:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-13 16:27:36,313 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2024-11-13 16:27:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:27:36,313 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-13 16:27:36,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:27:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-13 16:27:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:27:36,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:27:36,314 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:27:36,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:27:36,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:36,516 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:27:36,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:27:36,516 INFO L85 PathProgramCache]: Analyzing trace with hash -332962063, now seen corresponding path program 2 times [2024-11-13 16:27:36,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:27:36,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537648435] [2024-11-13 16:27:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:36,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:27:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:36,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:27:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:36,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 16:27:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:36,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:27:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 16:27:36,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:36,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537648435] [2024-11-13 16:27:36,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537648435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367798833] [2024-11-13 16:27:36,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:27:36,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:36,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:36,786 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:36,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:27:36,998 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:27:36,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:27:37,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:27:37,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:27:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:27:37,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:27:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367798833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:27:37,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:27:37,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2024-11-13 16:27:37,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143659103] [2024-11-13 16:27:37,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:27:37,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:27:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:27:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:27:37,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:27:37,035 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:27:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:27:37,071 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-11-13 16:27:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:27:37,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-11-13 16:27:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:27:37,073 INFO L225 Difference]: With dead ends: 57 [2024-11-13 16:27:37,073 INFO L226 Difference]: Without dead ends: 41 [2024-11-13 16:27:37,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:27:37,074 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:27:37,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 66 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:27:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-13 16:27:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-11-13 16:27:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:27:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-13 16:27:37,084 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 37 [2024-11-13 16:27:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:27:37,084 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-13 16:27:37,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:27:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-13 16:27:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 16:27:37,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:27:37,086 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:27:37,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:27:37,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:37,287 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:27:37,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:27:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2034528298, now seen corresponding path program 1 times [2024-11-13 16:27:37,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:27:37,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055536152] [2024-11-13 16:27:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:37,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:27:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:37,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:27:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:37,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 16:27:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:37,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:27:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 16:27:37,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:37,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055536152] [2024-11-13 16:27:37,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055536152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:37,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870977924] [2024-11-13 16:27:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:37,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:37,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:37,706 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:37,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:27:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:37,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 16:27:37,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:27:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:27:37,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:27:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:27:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870977924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:27:38,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:27:38,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-13 16:27:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806560439] [2024-11-13 16:27:38,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:27:38,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 16:27:38,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:27:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 16:27:38,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:27:38,100 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 16:27:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:27:38,299 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-11-13 16:27:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:27:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 38 [2024-11-13 16:27:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:27:38,301 INFO L225 Difference]: With dead ends: 49 [2024-11-13 16:27:38,301 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 16:27:38,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:27:38,301 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:27:38,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 167 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:27:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 16:27:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-13 16:27:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:27:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-13 16:27:38,310 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 38 [2024-11-13 16:27:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:27:38,310 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-13 16:27:38,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 16:27:38,311 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-13 16:27:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:27:38,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:27:38,311 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 16:27:38,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:27:38,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:38,516 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:27:38,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:27:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1354077336, now seen corresponding path program 1 times [2024-11-13 16:27:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:27:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739011833] [2024-11-13 16:27:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:27:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:39,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 16:27:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:39,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 16:27:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:39,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:27:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:27:39,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:39,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739011833] [2024-11-13 16:27:39,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739011833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:39,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551057428] [2024-11-13 16:27:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:39,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:39,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:39,852 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:39,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:27:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:40,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-13 16:27:40,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:27:40,171 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 6 treesize of output 5 [2024-11-13 16:27:40,399 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 9 treesize of output 3 [2024-11-13 16:27:40,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:27:40,482 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 16:27:40,482 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 15 treesize of output 15 [2024-11-13 16:27:40,717 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 16:27:40,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 17 [2024-11-13 16:27:40,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 17 [2024-11-13 16:27:40,852 INFO L349 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2024-11-13 16:27:40,853 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 173 treesize of output 130 [2024-11-13 16:27:40,859 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 54 treesize of output 21 [2024-11-13 16:27:40,866 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 79 treesize of output 25 [2024-11-13 16:27:40,944 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 68 treesize of output 48 [2024-11-13 16:27:40,948 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 52 treesize of output 36 [2024-11-13 16:27:41,024 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 33 treesize of output 15 [2024-11-13 16:27:41,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-13 16:27:41,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 16:27:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:27:41,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:27:41,269 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1408 (Array Int Int)) (v_ArrVal_1407 (Array Int Int)) (v_ArrVal_1405 Int)) (= |c_ULTIMATE.start_main_~uneq~0#1| (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (+ (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| (store (select |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) (+ |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| 4) v_ArrVal_1405)) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1407) .cse0) .cse1)) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_1408) .cse0) .cse1))))) is different from false [2024-11-13 16:27:41,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:41,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 78 [2024-11-13 16:27:41,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:41,298 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 150 treesize of output 149 [2024-11-13 16:27:41,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:41,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 116 [2024-11-13 16:27:41,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:41,328 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 216 treesize of output 201 [2024-11-13 16:27:41,337 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 47 treesize of output 39 [2024-11-13 16:27:41,344 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 39 treesize of output 31 [2024-11-13 16:27:43,248 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-13 16:27:43,248 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 11 treesize of output 11 [2024-11-13 16:27:43,384 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-13 16:27:43,385 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 11 treesize of output 11 [2024-11-13 16:27:51,778 INFO L349 Elim1Store]: treesize reduction 180, result has 84.1 percent of original size [2024-11-13 16:27:51,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 13 new quantified variables, introduced 79 case distinctions, treesize of input 2293 treesize of output 2804 [2024-11-13 16:27:52,272 INFO L224 Elim1Store]: Index analysis took 131 ms [2024-11-13 16:27:54,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:54,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 2108 treesize of output 3102 [2024-11-13 16:27:55,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:55,241 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 1855 treesize of output 1852 [2024-11-13 16:27:55,898 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 1863 treesize of output 1857 [2024-11-13 16:27:56,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:56,595 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 1887 treesize of output 1888 [2024-11-13 16:27:57,318 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 1889 treesize of output 1887 [2024-11-13 16:27:57,988 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 1887 treesize of output 1885 [2024-11-13 16:27:58,651 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 1905 treesize of output 1899 [2024-11-13 16:27:59,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:59,162 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 1919 treesize of output 1920 [2024-11-13 16:27:59,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:27:59,837 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 1931 treesize of output 1932 [2024-11-13 16:28:00,315 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 1923 treesize of output 1921 [2024-11-13 16:28:00,950 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:28:00,950 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 1961 treesize of output 1958 [2024-11-13 16:28:01,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:28:01,489 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 1969 treesize of output 1970 [2024-11-13 16:28:02,056 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 1961 treesize of output 1959 [2024-11-13 16:28:02,782 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 1969 treesize of output 1967 [2024-11-13 16:28:03,300 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 1987 treesize of output 1981 [2024-11-13 16:28:03,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:28:03,858 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 2011 treesize of output 2012 [2024-11-13 16:40:05,067 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-13 16:40:05,068 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-13 16:40:05,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-13 16:40:05,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:40:05,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:05,270 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) 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.transform(TermContextTransformationEngine.java:88) 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.computeBackwardSequence(IterativePredicateTransformer.java:360) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2024-11-13 16:40:05,278 INFO L158 Benchmark]: Toolchain (without parser) took 805366.44ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 117.9MB in the beginning and 691.1MB in the end (delta: -573.2MB). Peak memory consumption was 936.1MB. Max. memory is 16.1GB. [2024-11-13 16:40:05,278 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 167.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:40:05,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.69ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 99.6MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 16:40:05,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.96ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:40:05,279 INFO L158 Benchmark]: Boogie Preprocessor took 50.31ms. Allocated memory is still 142.6MB. Free memory was 97.9MB in the beginning and 95.2MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:40:05,280 INFO L158 Benchmark]: RCFGBuilder took 480.37ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 77.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 16:40:05,280 INFO L158 Benchmark]: TraceAbstraction took 804340.69ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 77.3MB in the beginning and 691.1MB in the end (delta: -613.7MB). Peak memory consumption was 894.2MB. Max. memory is 16.1GB. [2024-11-13 16:40:05,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 167.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.69ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 99.6MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.96ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.31ms. Allocated memory is still 142.6MB. Free memory was 97.9MB in the beginning and 95.2MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 480.37ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 77.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 804340.69ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 77.3MB in the beginning and 691.1MB in the end (delta: -613.7MB). Peak memory consumption was 894.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/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 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:40:08,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:40:08,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 16:40:08,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:40:08,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:40:08,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:40:08,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:40:08,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:40:08,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:40:08,498 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:40:08,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:40:08,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:40:08,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:40:08,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:40:08,500 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:40:08,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:40:08,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:40:08,501 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:40:08,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:40:08,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:40:08,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:40:08,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:40:08,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:40:08,502 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:40:08,502 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 16:40:08,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:40:08,503 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 16:40:08,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:40:08,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:40:08,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:40:08,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:40:08,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:40:08,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:40:08,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:40:08,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:40:08,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:40:08,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:40:08,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:40:08,506 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 16:40:08,506 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 16:40:08,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:40:08,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:40:08,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:40:08,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:40:08,507 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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/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 -> 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 [2024-11-13 16:40:08,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:40:08,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:40:08,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:40:08,929 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:40:08,929 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:40:08,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i Unable to find full path for "g++" [2024-11-13 16:40:11,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:40:11,504 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:40:11,505 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2024-11-13 16:40:11,521 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/data/6f3728e3f/1d8a76d83ecd4ed097602bec5d88604d/FLAG3fc5bf7b9 [2024-11-13 16:40:11,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/data/6f3728e3f/1d8a76d83ecd4ed097602bec5d88604d [2024-11-13 16:40:11,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:40:11,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:40:11,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:40:11,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:40:11,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:40:11,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:40:11" (1/1) ... [2024-11-13 16:40:11,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6794954a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:11, skipping insertion in model container [2024-11-13 16:40:11,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:40:11" (1/1) ... [2024-11-13 16:40:11,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:40:12,142 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i[24620,24633] [2024-11-13 16:40:12,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:40:12,173 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:40:12,237 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_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i[24620,24633] [2024-11-13 16:40:12,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:40:12,289 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:40:12,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12 WrapperNode [2024-11-13 16:40:12,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:40:12,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:40:12,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:40:12,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:40:12,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,387 INFO L138 Inliner]: procedures = 131, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 147 [2024-11-13 16:40:12,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:40:12,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:40:12,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:40:12,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:40:12,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,456 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 13, 5]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 6 writes are split as follows [0, 5, 1]. [2024-11-13 16:40:12,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:40:12,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:40:12,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:40:12,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:40:12,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (1/1) ... [2024-11-13 16:40:12,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:40:12,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:12,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:40:12,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:40:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 16:40:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 16:40:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 16:40:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-13 16:40:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-13 16:40:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:40:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 16:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 16:40:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:40:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 16:40:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 16:40:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 16:40:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 16:40:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 16:40:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 16:40:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 16:40:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 16:40:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 16:40:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:40:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:40:12,915 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:40:12,920 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:40:13,352 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-13 16:40:13,352 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:40:13,364 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:40:13,365 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 16:40:13,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:40:13 BoogieIcfgContainer [2024-11-13 16:40:13,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:40:13,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:40:13,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:40:13,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:40:13,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:40:11" (1/3) ... [2024-11-13 16:40:13,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5adcf4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:40:13, skipping insertion in model container [2024-11-13 16:40:13,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:12" (2/3) ... [2024-11-13 16:40:13,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5adcf4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:40:13, skipping insertion in model container [2024-11-13 16:40:13,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:40:13" (3/3) ... [2024-11-13 16:40:13,379 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2024-11-13 16:40:13,400 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:40:13,402 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2n_insert_unequal.i that has 2 procedures, 33 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-13 16:40:13,476 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:40:13,492 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;@394a5be1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:40:13,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:40:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 29 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:40:13,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:13,508 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:13,509 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:13,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash -324032319, now seen corresponding path program 1 times [2024-11-13 16:40:13,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:13,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213253831] [2024-11-13 16:40:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:13,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:13,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:13,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:13,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:40:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:13,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:40:13,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:13,922 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 16:40:13,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:13,923 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:13,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213253831] [2024-11-13 16:40:13,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213253831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:13,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:13,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:40:13,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346244418] [2024-11-13 16:40:13,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:13,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:40:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:13,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:40:13,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:40:13,967 INFO L87 Difference]: Start difference. First operand has 33 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 29 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:14,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:14,040 INFO L93 Difference]: Finished difference Result 63 states and 95 transitions. [2024-11-13 16:40:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:40:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-13 16:40:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:14,054 INFO L225 Difference]: With dead ends: 63 [2024-11-13 16:40:14,055 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 16:40:14,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:40:14,063 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:14,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:40:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 16:40:14,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-13 16:40:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2024-11-13 16:40:14,105 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 19 [2024-11-13 16:40:14,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:14,107 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2024-11-13 16:40:14,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2024-11-13 16:40:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:40:14,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:14,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:14,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:40:14,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:14,312 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:14,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash -266774017, now seen corresponding path program 1 times [2024-11-13 16:40:14,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:14,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669359213] [2024-11-13 16:40:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:14,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:14,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:14,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:40:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:14,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:40:14,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:14,590 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 16:40:14,591 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:14,591 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669359213] [2024-11-13 16:40:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669359213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:14,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:14,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:40:14,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259826967] [2024-11-13 16:40:14,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:14,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:40:14,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:40:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:40:14,597 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:14,646 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2024-11-13 16:40:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:40:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-13 16:40:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:14,649 INFO L225 Difference]: With dead ends: 56 [2024-11-13 16:40:14,650 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 16:40:14,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:40:14,652 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:14,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 63 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:40:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 16:40:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-13 16:40:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2024-11-13 16:40:14,664 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 19 [2024-11-13 16:40:14,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:14,666 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2024-11-13 16:40:14,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-13 16:40:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:40:14,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:14,667 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:14,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:40:14,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:14,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:14,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash -801907593, now seen corresponding path program 1 times [2024-11-13 16:40:14,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:14,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562193456] [2024-11-13 16:40:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:14,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:14,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:14,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:14,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:40:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:15,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:40:15,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:40:15,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:40:15,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562193456] [2024-11-13 16:40:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562193456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:40:15,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:40:15,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-13 16:40:15,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745697882] [2024-11-13 16:40:15,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:40:15,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:40:15,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:40:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:40:15,232 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:40:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:15,381 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2024-11-13 16:40:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:40:15,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-11-13 16:40:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:15,383 INFO L225 Difference]: With dead ends: 63 [2024-11-13 16:40:15,383 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 16:40:15,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:40:15,385 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:15,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 124 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:40:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 16:40:15,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-13 16:40:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:40:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2024-11-13 16:40:15,396 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 27 [2024-11-13 16:40:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:15,396 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2024-11-13 16:40:15,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:40:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2024-11-13 16:40:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 16:40:15,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:15,397 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:15,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:40:15,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:15,598 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:15,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:15,599 INFO L85 PathProgramCache]: Analyzing trace with hash 918578927, now seen corresponding path program 2 times [2024-11-13 16:40:15,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:15,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420496847] [2024-11-13 16:40:15,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:40:15,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:15,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:15,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:15,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:40:15,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 16:40:15,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:40:15,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:40:15,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:40:15,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:15,834 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:15,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420496847] [2024-11-13 16:40:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420496847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:15,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:15,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:40:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475272271] [2024-11-13 16:40:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:15,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:40:15,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:15,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:40:15,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:40:15,836 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:15,884 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2024-11-13 16:40:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:40:15,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-13 16:40:15,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:15,886 INFO L225 Difference]: With dead ends: 52 [2024-11-13 16:40:15,886 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 16:40:15,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:40:15,888 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:15,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:40:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 16:40:15,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-13 16:40:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:40:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2024-11-13 16:40:15,900 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 35 [2024-11-13 16:40:15,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:15,900 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2024-11-13 16:40:15,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2024-11-13 16:40:15,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:40:15,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:15,902 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:15,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:40:16,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:16,106 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:16,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1495087931, now seen corresponding path program 1 times [2024-11-13 16:40:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3836081] [2024-11-13 16:40:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:16,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:16,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:16,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:16,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:40:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:16,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 16:40:16,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:16,379 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 6 treesize of output 7 [2024-11-13 16:40:16,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:40:16,585 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 11 [2024-11-13 16:40:16,869 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 5 [2024-11-13 16:40:17,179 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 16:40:17,179 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 17 treesize of output 17 [2024-11-13 16:40:17,204 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 20 treesize of output 15 [2024-11-13 16:40:17,765 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 39 treesize of output 15 [2024-11-13 16:40:17,915 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 20 treesize of output 15 [2024-11-13 16:40:18,032 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 19 treesize of output 11 [2024-11-13 16:40:18,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 16:40:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:40:18,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:18,397 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_229 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_229) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) is different from false [2024-11-13 16:40:27,639 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3836081] [2024-11-13 16:40:27,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3836081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:40:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [798947333] [2024-11-13 16:40:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:27,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:40:27,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:40:27,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:40:27,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-13 16:40:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:28,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 16:40:28,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:28,395 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 6 treesize of output 7 [2024-11-13 16:40:28,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:40:28,715 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 11 [2024-11-13 16:40:29,413 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 11 treesize of output 3 [2024-11-13 16:40:29,423 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 5 [2024-11-13 16:40:34,103 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 16:40:34,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-13 16:40:34,169 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 16:40:34,169 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 17 treesize of output 17 [2024-11-13 16:40:35,044 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 39 treesize of output 15 [2024-11-13 16:40:35,323 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 20 treesize of output 15 [2024-11-13 16:40:35,585 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 19 treesize of output 11 [2024-11-13 16:40:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:40:35,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:35,912 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_304) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2024-11-13 16:40:40,881 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_insert_#t~ret7#1.base_18| (_ BitVec 32)) (v_ArrVal_303 (_ BitVec 32)) (v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|))) (store |c_#memory_int#1| .cse0 (store (select (store |c_#memory_int#1| |v_ULTIMATE.start_sll_insert_#t~ret7#1.base_18| v_ArrVal_308) .cse0) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) v_ArrVal_303))) |v_ULTIMATE.start_sll_insert_#t~ret7#1.base_18| v_ArrVal_304) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_sll_insert_#t~ret7#1.base_18|))))) is different from false [2024-11-13 16:40:40,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [798947333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:40:40,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:40:40,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2024-11-13 16:40:40,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658731350] [2024-11-13 16:40:40,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:40:40,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 16:40:40,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:40,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 16:40:40,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1585, Unknown=80, NotChecked=252, Total=2070 [2024-11-13 16:40:40,889 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 34 states, 32 states have (on average 1.5) internal successors, (48), 28 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:40:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:43,818 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2024-11-13 16:40:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:40:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.5) internal successors, (48), 28 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2024-11-13 16:40:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:43,820 INFO L225 Difference]: With dead ends: 64 [2024-11-13 16:40:43,820 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 16:40:43,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=196, Invalid=2186, Unknown=80, NotChecked=294, Total=2756 [2024-11-13 16:40:43,823 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:43,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 270 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 16:40:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 16:40:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2024-11-13 16:40:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:40:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2024-11-13 16:40:43,839 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 36 [2024-11-13 16:40:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:43,840 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2024-11-13 16:40:43,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.5) internal successors, (48), 28 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:40:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2024-11-13 16:40:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:40:43,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:43,842 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:43,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-13 16:40:44,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 16:40:44,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:44,247 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:44,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1552346233, now seen corresponding path program 1 times [2024-11-13 16:40:44,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:44,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972653700] [2024-11-13 16:40:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:44,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:44,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:44,251 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:44,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:40:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:44,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:40:44,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:44,603 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 16 treesize of output 8 [2024-11-13 16:40:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:40:44,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 16:40:44,780 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:44,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972653700] [2024-11-13 16:40:44,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972653700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:40:44,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:40:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2024-11-13 16:40:44,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066140700] [2024-11-13 16:40:44,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:40:44,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:40:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:40:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:40:44,781 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 16:40:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:45,588 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2024-11-13 16:40:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:40:45,589 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-13 16:40:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:45,590 INFO L225 Difference]: With dead ends: 71 [2024-11-13 16:40:45,591 INFO L226 Difference]: Without dead ends: 60 [2024-11-13 16:40:45,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:40:45,592 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:45,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 265 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:40:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-13 16:40:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2024-11-13 16:40:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:40:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-11-13 16:40:45,607 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 36 [2024-11-13 16:40:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:45,608 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-11-13 16:40:45,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 16:40:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-11-13 16:40:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:40:45,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:45,610 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:45,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:40:45,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:45,810 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:45,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash -896969261, now seen corresponding path program 1 times [2024-11-13 16:40:45,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:45,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26325001] [2024-11-13 16:40:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:45,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:45,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:45,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:45,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:40:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:45,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:40:45,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:46,364 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 16 treesize of output 8 [2024-11-13 16:40:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:40:46,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:46,635 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 16 [2024-11-13 16:40:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 16:40:46,915 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:46,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26325001] [2024-11-13 16:40:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26325001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:40:46,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:40:46,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2024-11-13 16:40:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664630586] [2024-11-13 16:40:46,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:40:46,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:40:46,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:40:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:40:46,918 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:40:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:47,999 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2024-11-13 16:40:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:40:48,000 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2024-11-13 16:40:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:48,001 INFO L225 Difference]: With dead ends: 74 [2024-11-13 16:40:48,001 INFO L226 Difference]: Without dead ends: 67 [2024-11-13 16:40:48,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2024-11-13 16:40:48,003 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 52 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:48,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 364 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:40:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-13 16:40:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2024-11-13 16:40:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:40:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2024-11-13 16:40:48,017 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 37 [2024-11-13 16:40:48,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:48,018 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2024-11-13 16:40:48,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:40:48,018 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2024-11-13 16:40:48,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:40:48,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:48,019 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:48,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:40:48,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:48,220 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:48,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash -332962063, now seen corresponding path program 2 times [2024-11-13 16:40:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:48,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661164027] [2024-11-13 16:40:48,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:40:48,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:48,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:48,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:48,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:40:48,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:40:48,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:40:48,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:40:48,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:40:48,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:40:48,876 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661164027] [2024-11-13 16:40:48,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661164027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:40:48,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:40:48,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 16:40:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646576291] [2024-11-13 16:40:48,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:40:48,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:40:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:40:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:40:48,878 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:40:48,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:48,976 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-11-13 16:40:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:40:48,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-11-13 16:40:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:48,978 INFO L225 Difference]: With dead ends: 63 [2024-11-13 16:40:48,978 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 16:40:48,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:40:48,979 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:48,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 156 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:40:48,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 16:40:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-11-13 16:40:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:40:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-13 16:40:48,992 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 37 [2024-11-13 16:40:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:48,992 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-13 16:40:48,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:40:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-13 16:40:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 16:40:48,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:48,993 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:49,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:40:49,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:49,194 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:49,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:49,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2034528298, now seen corresponding path program 1 times [2024-11-13 16:40:49,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:49,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1939941683] [2024-11-13 16:40:49,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:49,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:49,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:49,197 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:49,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:40:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:49,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:40:49,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:40:49,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:40:49,805 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:49,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939941683] [2024-11-13 16:40:49,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939941683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:40:49,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:40:49,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-13 16:40:49,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636763200] [2024-11-13 16:40:49,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:40:49,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:40:49,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:49,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:40:49,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:40:49,807 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:40:49,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:49,980 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-11-13 16:40:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:40:49,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2024-11-13 16:40:49,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:49,983 INFO L225 Difference]: With dead ends: 55 [2024-11-13 16:40:49,983 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 16:40:49,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:40:49,984 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:49,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 143 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:40:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 16:40:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-11-13 16:40:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:40:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-13 16:40:49,999 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 38 [2024-11-13 16:40:49,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:49,999 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-13 16:40:49,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:40:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-13 16:40:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:40:50,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:50,000 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 16:40:50,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:40:50,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:50,201 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:40:50,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1354077336, now seen corresponding path program 1 times [2024-11-13 16:40:50,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:50,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654193626] [2024-11-13 16:40:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:50,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:50,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:50,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:50,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f45e24-928b-4e5e-924b-bc5b0dbf8ab8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:40:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:50,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 16:40:50,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:50,394 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 6 treesize of output 7 [2024-11-13 16:40:50,612 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 5 [2024-11-13 16:40:50,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:40:50,913 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 16:40:50,913 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 17 treesize of output 17 [2024-11-13 16:40:51,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2024-11-13 16:40:51,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2024-11-13 16:40:51,483 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 16:40:51,663 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-13 16:40:51,664 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 119 treesize of output 76 [2024-11-13 16:40:51,673 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 15 [2024-11-13 16:40:51,685 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 55 treesize of output 19 [2024-11-13 16:40:51,833 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 50 treesize of output 30 [2024-11-13 16:40:51,964 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 27 treesize of output 15 [2024-11-13 16:40:51,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2024-11-13 16:40:52,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 16:40:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:40:52,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:52,795 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_625 (_ BitVec 32)) (v_ArrVal_626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_628 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| (store (select |c_#memory_int#1| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|) v_ArrVal_625)) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_628) .cse0) .cse1)) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| v_ArrVal_626) .cse0) .cse1))) |c_ULTIMATE.start_main_~uneq~0#1|)) is different from false [2024-11-13 16:40:52,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:40:52,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 78 [2024-11-13 16:40:52,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:40:52,929 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 150 treesize of output 149 [2024-11-13 16:40:52,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:40:52,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 116 [2024-11-13 16:40:53,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:40:53,009 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 216 treesize of output 201 [2024-11-13 16:40:53,031 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 47 treesize of output 39 [2024-11-13 16:40:53,054 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 39 treesize of output 31