./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/packet_filter.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_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/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_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/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_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/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 d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:50:35,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:50:35,459 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:50:35,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:50:35,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:50:35,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:50:35,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:50:35,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:50:35,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:50:35,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:50:35,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:50:35,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:50:35,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:50:35,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:50:35,508 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:50:35,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:50:35,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:50:35,509 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:50:35,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:50:35,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:50:35,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:50:35,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:50:35,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:50:35,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:50:35,511 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:50:35,511 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:50:35,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:50:35,511 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:50:35,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:50:35,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:50:35,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:50:35,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:50:35,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:50:35,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:50:35,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:50:35,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:50:35,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:50:35,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:50:35,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:50:35,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:50:35,514 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:50:35,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:50:35,514 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_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/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 -> d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f [2024-11-13 13:50:35,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:50:35,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:50:35,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:50:35,883 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:50:35,883 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:50:35,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/heap-data/packet_filter.i Unable to find full path for "g++" [2024-11-13 13:50:37,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:50:38,238 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:50:38,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/sv-benchmarks/c/heap-data/packet_filter.i [2024-11-13 13:50:38,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/data/c13545e51/aed82e1939da4d7e97105a0ac19fca04/FLAG7fec02863 [2024-11-13 13:50:38,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/data/c13545e51/aed82e1939da4d7e97105a0ac19fca04 [2024-11-13 13:50:38,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:50:38,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:50:38,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:50:38,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:50:38,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:50:38,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b949e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38, skipping insertion in model container [2024-11-13 13:50:38,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:50:38,702 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_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2024-11-13 13:50:38,712 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_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2024-11-13 13:50:38,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:50:38,727 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:50:38,768 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_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2024-11-13 13:50:38,774 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_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2024-11-13 13:50:38,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:50:38,827 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:50:38,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38 WrapperNode [2024-11-13 13:50:38,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:50:38,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:50:38,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:50:38,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:50:38,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,899 INFO L138 Inliner]: procedures = 130, calls = 85, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2024-11-13 13:50:38,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:50:38,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:50:38,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:50:38,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:50:38,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,915 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,946 INFO L175 MemorySlicer]: Split 57 memory accesses to 7 slices as follows [2, 16, 6, 6, 6, 6, 15]. 28 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 2, 0, 0, 3]. The 14 writes are split as follows [0, 4, 3, 1, 3, 3, 0]. [2024-11-13 13:50:38,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:38,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:50:38,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:50:38,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:50:38,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:50:38,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (1/1) ... [2024-11-13 13:50:39,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:50:39,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:50:39,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:50:39,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:50:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:50:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:50:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 13:50:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 13:50:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 13:50:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 13:50:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 13:50:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2024-11-13 13:50:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 13:50:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 13:50:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure send [2024-11-13 13:50:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:50:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 13:50:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 13:50:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 13:50:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 13:50:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 13:50:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:50:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:50:39,328 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:50:39,330 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:50:39,734 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-13 13:50:39,734 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:50:39,745 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:50:39,745 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:50:39,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:50:39 BoogieIcfgContainer [2024-11-13 13:50:39,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:50:39,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:50:39,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:50:39,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:50:39,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:50:38" (1/3) ... [2024-11-13 13:50:39,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcd40e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:50:39, skipping insertion in model container [2024-11-13 13:50:39,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:50:38" (2/3) ... [2024-11-13 13:50:39,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcd40e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:50:39, skipping insertion in model container [2024-11-13 13:50:39,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:50:39" (3/3) ... [2024-11-13 13:50:39,756 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2024-11-13 13:50:39,773 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:50:39,774 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG packet_filter.i that has 3 procedures, 45 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-11-13 13:50:39,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:50:39,844 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;@6120aa2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:50:39,844 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:50:39,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 37 states have internal predecessors, (50), 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 13:50:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 13:50:39,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:39,855 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:39,855 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:39,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1121846263, now seen corresponding path program 1 times [2024-11-13 13:50:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:39,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030610717] [2024-11-13 13:50:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:40,062 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 13:50:40,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:40,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030610717] [2024-11-13 13:50:40,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030610717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:40,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:40,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:50:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227993746] [2024-11-13 13:50:40,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:40,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:50:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:50:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:50:40,094 INFO L87 Difference]: Start difference. First operand has 45 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 37 states have internal predecessors, (50), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:50:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:40,118 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-11-13 13:50:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:50:40,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 13:50:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:40,128 INFO L225 Difference]: With dead ends: 72 [2024-11-13 13:50:40,128 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 13:50:40,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:50:40,137 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:40,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:50:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 13:50:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 13:50:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 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 13:50:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-11-13 13:50:40,178 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 8 [2024-11-13 13:50:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:40,178 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-11-13 13:50:40,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:50:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-11-13 13:50:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 13:50:40,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:40,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:40,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:50:40,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:40,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash -563962293, now seen corresponding path program 1 times [2024-11-13 13:50:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304759645] [2024-11-13 13:50:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:40,420 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 13:50:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:40,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304759645] [2024-11-13 13:50:40,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304759645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:50:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058473779] [2024-11-13 13:50:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:40,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:50:40,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:40,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:50:40,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:50:40,426 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:50:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:40,534 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2024-11-13 13:50:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:50:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 13:50:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:40,537 INFO L225 Difference]: With dead ends: 73 [2024-11-13 13:50:40,537 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 13:50:40,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 13:50:40,539 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 9 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:40,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:50:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 13:50:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-13 13:50:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 39 states have internal predecessors, (49), 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 13:50:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-13 13:50:40,558 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 9 [2024-11-13 13:50:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:40,558 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-13 13:50:40,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:50:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-13 13:50:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 13:50:40,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:40,561 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:40,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:50:40,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:40,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash -334649966, now seen corresponding path program 1 times [2024-11-13 13:50:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:40,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814036078] [2024-11-13 13:50:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:40,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:40,854 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 13:50:40,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814036078] [2024-11-13 13:50:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814036078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:40,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:40,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:50:40,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635606825] [2024-11-13 13:50:40,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:40,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:50:40,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:50:40,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:50:40,856 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:50:40,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:40,957 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2024-11-13 13:50:40,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:50:40,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 13:50:40,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:40,959 INFO L225 Difference]: With dead ends: 66 [2024-11-13 13:50:40,959 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 13:50:40,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 13:50:40,960 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:40,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:50:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 13:50:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2024-11-13 13:50:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 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 13:50:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-13 13:50:40,974 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 12 [2024-11-13 13:50:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:40,977 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-13 13:50:40,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:50:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-13 13:50:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:50:40,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:40,978 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:40,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:50:40,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:40,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1457259506, now seen corresponding path program 1 times [2024-11-13 13:50:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963829535] [2024-11-13 13:50:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:41,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:50:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:50:41,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963829535] [2024-11-13 13:50:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963829535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:50:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108483626] [2024-11-13 13:50:41,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:41,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:50:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:41,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:50:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:50:41,336 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. 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 13:50:41,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:41,490 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2024-11-13 13:50:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:50:41,493 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 20 [2024-11-13 13:50:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:41,494 INFO L225 Difference]: With dead ends: 48 [2024-11-13 13:50:41,494 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 13:50:41,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:50:41,496 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:41,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:50:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 13:50:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-13 13:50:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 38 states have internal predecessors, (47), 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 13:50:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-13 13:50:41,504 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 20 [2024-11-13 13:50:41,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:41,505 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-13 13:50:41,505 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 13:50:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-13 13:50:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:50:41,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:41,506 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:41,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:50:41,507 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:41,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:41,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1457261428, now seen corresponding path program 1 times [2024-11-13 13:50:41,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:41,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411397298] [2024-11-13 13:50:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:41,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:43,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:50:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:43,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:43,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411397298] [2024-11-13 13:50:43,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411397298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:43,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:43,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 13:50:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141543838] [2024-11-13 13:50:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:43,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:50:43,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:44,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:50:44,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:50:44,000 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 13:50:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:45,347 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2024-11-13 13:50:45,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 13:50:45,348 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 20 [2024-11-13 13:50:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:45,349 INFO L225 Difference]: With dead ends: 88 [2024-11-13 13:50:45,349 INFO L226 Difference]: Without dead ends: 66 [2024-11-13 13:50:45,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:50:45,350 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:45,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 302 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:50:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-13 13:50:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2024-11-13 13:50:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 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 13:50:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-11-13 13:50:45,359 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 20 [2024-11-13 13:50:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:45,359 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-11-13 13:50:45,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 13:50:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-11-13 13:50:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 13:50:45,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:45,360 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:45,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:50:45,361 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:45,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash 967233465, now seen corresponding path program 1 times [2024-11-13 13:50:45,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:45,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66890884] [2024-11-13 13:50:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:45,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:45,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:50:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:46,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66890884] [2024-11-13 13:50:46,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66890884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:50:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967106818] [2024-11-13 13:50:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:46,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:46,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:50:46,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:50:46,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:50:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:46,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 13:50:46,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:50:46,437 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 10 treesize of output 8 [2024-11-13 13:50:50,756 WARN L851 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (or (= (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (exists ((|v_#memory_$Pointer$#3.base_BEFORE_CALL_2| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| |c_#memory_$Pointer$#3.base|))) (and (= (store |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| .cse0 (select |c_#memory_$Pointer$#3.base| .cse0)) |c_#memory_$Pointer$#3.base|) (= (select (select |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (not (= .cse0 |c_ULTIMATE.start_main_~#prio_queue~0#1.base|))))))) is different from false [2024-11-13 13:50:50,774 WARN L873 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (or (= (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (exists ((|v_#memory_$Pointer$#3.base_BEFORE_CALL_2| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| |c_#memory_$Pointer$#3.base|))) (and (= (store |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| .cse0 (select |c_#memory_$Pointer$#3.base| .cse0)) |c_#memory_$Pointer$#3.base|) (= (select (select |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (not (= .cse0 |c_ULTIMATE.start_main_~#prio_queue~0#1.base|))))))) is different from true [2024-11-13 13:50:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:50,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:50:51,012 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_450 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_450) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0)) (forall ((v_ArrVal_449 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_449) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0))) is different from false [2024-11-13 13:50:51,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967106818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:50:51,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:50:51,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2024-11-13 13:50:51,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44169956] [2024-11-13 13:50:51,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:50:51,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:50:51,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:50:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=40, Unknown=3, NotChecked=26, Total=90 [2024-11-13 13:50:51,017 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:50:51,253 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0))) (and (not (= |c_ULTIMATE.start_main_~#normal_queue~0#1.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|)) .cse0 (= (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (or .cse0 (exists ((|v_#memory_$Pointer$#3.base_BEFORE_CALL_2| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| |c_#memory_$Pointer$#3.base|))) (and (= (store |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| .cse1 (select |c_#memory_$Pointer$#3.base| .cse1)) |c_#memory_$Pointer$#3.base|) (= (select (select |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (not (= .cse1 |c_ULTIMATE.start_main_~#prio_queue~0#1.base|)))))))) is different from false [2024-11-13 13:50:51,257 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0))) (and (not (= |c_ULTIMATE.start_main_~#normal_queue~0#1.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|)) .cse0 (= (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (or .cse0 (exists ((|v_#memory_$Pointer$#3.base_BEFORE_CALL_2| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| |c_#memory_$Pointer$#3.base|))) (and (= (store |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| .cse1 (select |c_#memory_$Pointer$#3.base| .cse1)) |c_#memory_$Pointer$#3.base|) (= (select (select |v_#memory_$Pointer$#3.base_BEFORE_CALL_2| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (not (= .cse1 |c_ULTIMATE.start_main_~#prio_queue~0#1.base|)))))))) is different from true [2024-11-13 13:50:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:51,290 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2024-11-13 13:50:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:50:51,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-13 13:50:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:51,292 INFO L225 Difference]: With dead ends: 94 [2024-11-13 13:50:51,292 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 13:50:51,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=23, Invalid=40, Unknown=5, NotChecked=42, Total=110 [2024-11-13 13:50:51,294 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 19 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:51,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 162 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 57 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2024-11-13 13:50:51,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 13:50:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2024-11-13 13:50:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.309090909090909) internal successors, (72), 56 states have internal predecessors, (72), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:50:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2024-11-13 13:50:51,307 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 21 [2024-11-13 13:50:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:51,307 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2024-11-13 13:50:51,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:50:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2024-11-13 13:50:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 13:50:51,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:51,309 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:51,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:50:51,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:50:51,509 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:51,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1685783047, now seen corresponding path program 1 times [2024-11-13 13:50:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:51,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559498793] [2024-11-13 13:50:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:52,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:50:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:52,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559498793] [2024-11-13 13:50:52,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559498793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:52,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:52,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 13:50:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73396121] [2024-11-13 13:50:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:52,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:50:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:50:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:50:52,978 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 13:50:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:53,773 INFO L93 Difference]: Finished difference Result 85 states and 114 transitions. [2024-11-13 13:50:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:50:53,774 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 21 [2024-11-13 13:50:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:53,775 INFO L225 Difference]: With dead ends: 85 [2024-11-13 13:50:53,775 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 13:50:53,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:50:53,777 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:53,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 336 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:50:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 13:50:53,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2024-11-13 13:50:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 64 states have internal predecessors, (84), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:50:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-11-13 13:50:53,790 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 21 [2024-11-13 13:50:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:53,790 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-11-13 13:50:53,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 13:50:53,790 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-11-13 13:50:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 13:50:53,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:53,791 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:53,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:50:53,792 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:53,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1557525877, now seen corresponding path program 1 times [2024-11-13 13:50:53,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:53,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964254733] [2024-11-13 13:50:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:53,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:54,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:50:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:54,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964254733] [2024-11-13 13:50:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964254733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:54,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:54,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:50:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488524661] [2024-11-13 13:50:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:54,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:50:54,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:50:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:50:54,222 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 13:50:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:54,612 INFO L93 Difference]: Finished difference Result 96 states and 126 transitions. [2024-11-13 13:50:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:50:54,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 23 [2024-11-13 13:50:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:54,614 INFO L225 Difference]: With dead ends: 96 [2024-11-13 13:50:54,614 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 13:50:54,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:50:54,615 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 14 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:54,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 219 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:50:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 13:50:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2024-11-13 13:50:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 64 states have internal predecessors, (82), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:50:54,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2024-11-13 13:50:54,628 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 23 [2024-11-13 13:50:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:54,628 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2024-11-13 13:50:54,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 13:50:54,629 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2024-11-13 13:50:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 13:50:54,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:54,630 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:54,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:50:54,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:54,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:54,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1386732506, now seen corresponding path program 1 times [2024-11-13 13:50:54,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:54,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694159132] [2024-11-13 13:50:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:54,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:55,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:50:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:55,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694159132] [2024-11-13 13:50:55,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694159132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:55,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:55,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:50:55,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518728213] [2024-11-13 13:50:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:55,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:50:55,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:50:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:50:55,719 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 13:50:56,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:56,425 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2024-11-13 13:50:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:50:56,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 24 [2024-11-13 13:50:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:56,429 INFO L225 Difference]: With dead ends: 100 [2024-11-13 13:50:56,429 INFO L226 Difference]: Without dead ends: 98 [2024-11-13 13:50:56,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:50:56,430 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 23 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:56,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 454 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:50:56,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-13 13:50:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2024-11-13 13:50:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 75 states have internal predecessors, (97), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 13:50:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 111 transitions. [2024-11-13 13:50:56,467 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 111 transitions. Word has length 24 [2024-11-13 13:50:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:56,467 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 111 transitions. [2024-11-13 13:50:56,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 13:50:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 111 transitions. [2024-11-13 13:50:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 13:50:56,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:56,469 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:56,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:50:56,469 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:56,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1386730584, now seen corresponding path program 1 times [2024-11-13 13:50:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539803633] [2024-11-13 13:50:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:57,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:50:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539803633] [2024-11-13 13:50:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539803633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:50:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:50:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 13:50:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930590028] [2024-11-13 13:50:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:50:58,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:50:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:50:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:50:58,027 INFO L87 Difference]: Start difference. First operand 85 states and 111 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 13:50:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:59,172 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2024-11-13 13:50:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 13:50:59,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 24 [2024-11-13 13:50:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:59,177 INFO L225 Difference]: With dead ends: 111 [2024-11-13 13:50:59,177 INFO L226 Difference]: Without dead ends: 100 [2024-11-13 13:50:59,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:50:59,179 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 22 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:59,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 519 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:50:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-13 13:50:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85. [2024-11-13 13:50:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 75 states have internal predecessors, (96), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 13:50:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2024-11-13 13:50:59,205 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 24 [2024-11-13 13:50:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:59,205 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2024-11-13 13:50:59,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 13:50:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2024-11-13 13:50:59,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:50:59,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:59,209 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:59,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:50:59,209 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:59,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2106502247, now seen corresponding path program 1 times [2024-11-13 13:50:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:59,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82659536] [2024-11-13 13:50:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:59,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:00,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:51:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:00,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:51:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:00,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:00,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82659536] [2024-11-13 13:51:00,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82659536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:00,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541401833] [2024-11-13 13:51:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:00,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:00,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:00,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:00,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:51:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:00,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 13:51:00,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:00,864 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 30 treesize of output 31 [2024-11-13 13:51:00,874 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 34 treesize of output 15 [2024-11-13 13:51:00,887 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 11 [2024-11-13 13:51:00,915 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_append_to_queue_~q.offset_21 Int)) (let ((.cse2 (select |c_old(#memory_$Pointer$#3.base)| |c_append_to_queue_#in~q.base|)) (.cse1 (select (select |c_#memory_$Pointer$#3.base| |c_append_to_queue_#in~q.base|) v_append_to_queue_~q.offset_21)) (.cse0 (select |c_old(#memory_$Pointer$#3.offset)| |c_append_to_queue_#in~q.base|))) (and (= (select .cse0 v_append_to_queue_~q.offset_21) (select (select |c_#memory_$Pointer$#1.offset| .cse1) 12)) (= (store |c_old(#memory_$Pointer$#3.base)| |c_append_to_queue_#in~q.base| (store .cse2 v_append_to_queue_~q.offset_21 .cse1)) |c_#memory_$Pointer$#3.base|) (= (select .cse2 v_append_to_queue_~q.offset_21) (select (select |c_#memory_$Pointer$#1.base| .cse1) 12)) (= |c_#memory_$Pointer$#3.offset| (store |c_old(#memory_$Pointer$#3.offset)| |c_append_to_queue_#in~q.base| (store .cse0 v_append_to_queue_~q.offset_21 0)))))) is different from true [2024-11-13 13:51:01,011 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-13 13:51:01,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 34 [2024-11-13 13:51:01,052 INFO L349 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2024-11-13 13:51:01,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 37 [2024-11-13 13:51:01,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:51:01,914 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 106 treesize of output 102 [2024-11-13 13:51:01,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:51:01,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 114 [2024-11-13 13:51:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:02,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:03,080 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 465 treesize of output 425 [2024-11-13 13:51:03,091 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 176 treesize of output 172 [2024-11-13 13:51:03,106 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 316 treesize of output 296 [2024-11-13 13:51:03,590 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:51:03,593 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 80 treesize of output 60 [2024-11-13 13:51:03,602 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 30 treesize of output 26 [2024-11-13 13:51:03,649 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 186 treesize of output 166 [2024-11-13 13:51:03,663 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 30 treesize of output 26 [2024-11-13 13:51:03,807 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:51:03,810 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 76 treesize of output 56 [2024-11-13 13:51:03,856 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 418 treesize of output 378 [2024-11-13 13:51:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541401833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:04,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:51:04,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 20 [2024-11-13 13:51:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662841089] [2024-11-13 13:51:04,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:04,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 13:51:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 13:51:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=286, Unknown=1, NotChecked=34, Total=380 [2024-11-13 13:51:04,217 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 13:51:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:05,715 INFO L93 Difference]: Finished difference Result 155 states and 204 transitions. [2024-11-13 13:51:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:51:05,716 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 29 [2024-11-13 13:51:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:05,719 INFO L225 Difference]: With dead ends: 155 [2024-11-13 13:51:05,719 INFO L226 Difference]: Without dead ends: 133 [2024-11-13 13:51:05,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=92, Invalid=463, Unknown=1, NotChecked=44, Total=600 [2024-11-13 13:51:05,721 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 45 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:05,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 495 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 311 Invalid, 0 Unknown, 127 Unchecked, 1.0s Time] [2024-11-13 13:51:05,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-13 13:51:05,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2024-11-13 13:51:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 105 states have (on average 1.276190476190476) internal successors, (134), 106 states have internal predecessors, (134), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 13:51:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 156 transitions. [2024-11-13 13:51:05,754 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 156 transitions. Word has length 29 [2024-11-13 13:51:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:05,757 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 156 transitions. [2024-11-13 13:51:05,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 13:51:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 156 transitions. [2024-11-13 13:51:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 13:51:05,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:05,759 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:05,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:51:05,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 13:51:05,960 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:05,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:05,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1950389318, now seen corresponding path program 1 times [2024-11-13 13:51:05,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:05,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370687282] [2024-11-13 13:51:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:05,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:06,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:51:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:06,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:51:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:51:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370687282] [2024-11-13 13:51:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370687282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98722831] [2024-11-13 13:51:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:06,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:06,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:06,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:06,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:51:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:06,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 13:51:06,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:06,939 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 10 treesize of output 8 [2024-11-13 13:51:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:51:07,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:07,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98722831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:07,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:07,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-11-13 13:51:07,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731433336] [2024-11-13 13:51:07,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:07,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:51:07,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:51:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=77, Unknown=7, NotChecked=0, Total=110 [2024-11-13 13:51:07,544 INFO L87 Difference]: Start difference. First operand 121 states and 156 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:51:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:08,347 INFO L93 Difference]: Finished difference Result 175 states and 222 transitions. [2024-11-13 13:51:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:51:08,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-13 13:51:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:08,351 INFO L225 Difference]: With dead ends: 175 [2024-11-13 13:51:08,351 INFO L226 Difference]: Without dead ends: 135 [2024-11-13 13:51:08,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=152, Unknown=8, NotChecked=0, Total=210 [2024-11-13 13:51:08,352 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 24 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:08,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 283 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:51:08,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-13 13:51:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 126. [2024-11-13 13:51:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 110 states have internal predecessors, (141), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-13 13:51:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 165 transitions. [2024-11-13 13:51:08,386 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 165 transitions. Word has length 32 [2024-11-13 13:51:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:08,386 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 165 transitions. [2024-11-13 13:51:08,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:51:08,387 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 165 transitions. [2024-11-13 13:51:08,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 13:51:08,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:08,390 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:08,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:51:08,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 13:51:08,591 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:08,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 229241568, now seen corresponding path program 1 times [2024-11-13 13:51:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620511358] [2024-11-13 13:51:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:11,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:51:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:12,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:51:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:51:12,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:12,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620511358] [2024-11-13 13:51:12,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620511358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:12,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549346163] [2024-11-13 13:51:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:12,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:12,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:12,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:12,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:51:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:13,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-13 13:51:13,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:13,026 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 10 treesize of output 8 [2024-11-13 13:51:13,407 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 40 treesize of output 16 [2024-11-13 13:51:13,529 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 15 treesize of output 1 [2024-11-13 13:51:13,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 15 [2024-11-13 13:51:13,573 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 13:51:13,573 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 1 case distinctions, treesize of input 15 treesize of output 17 [2024-11-13 13:51:13,688 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 19 treesize of output 11 [2024-11-13 13:51:13,870 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 13:51:13,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 29 [2024-11-13 13:51:14,067 INFO L349 Elim1Store]: treesize reduction 20, result has 60.0 percent of original size [2024-11-13 13:51:14,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 44 [2024-11-13 13:51:14,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:51:14,114 INFO L349 Elim1Store]: treesize reduction 95, result has 1.0 percent of original size [2024-11-13 13:51:14,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2024-11-13 13:51:14,252 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 29 treesize of output 17 [2024-11-13 13:51:14,258 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 7 [2024-11-13 13:51:14,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 13:51:16,385 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 37 treesize of output 28 [2024-11-13 13:51:16,389 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 19 treesize of output 18 [2024-11-13 13:51:16,410 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 13:51:16,411 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 23 treesize of output 23 [2024-11-13 13:51:16,418 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 13:51:16,565 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 19 treesize of output 11 [2024-11-13 13:51:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:16,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549346163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:17,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:17,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 34 [2024-11-13 13:51:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45570160] [2024-11-13 13:51:17,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:17,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:51:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:51:17,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1186, Unknown=1, NotChecked=0, Total=1332 [2024-11-13 13:51:17,009 INFO L87 Difference]: Start difference. First operand 126 states and 165 transitions. Second operand has 34 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 31 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 13:51:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:20,973 INFO L93 Difference]: Finished difference Result 218 states and 289 transitions. [2024-11-13 13:51:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 13:51:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 31 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2024-11-13 13:51:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:20,975 INFO L225 Difference]: With dead ends: 218 [2024-11-13 13:51:20,975 INFO L226 Difference]: Without dead ends: 193 [2024-11-13 13:51:20,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=525, Invalid=3506, Unknown=1, NotChecked=0, Total=4032 [2024-11-13 13:51:20,978 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 95 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:20,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 674 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 13:51:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-13 13:51:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 150. [2024-11-13 13:51:21,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 129 states have (on average 1.310077519379845) internal successors, (169), 132 states have internal predecessors, (169), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 13:51:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 199 transitions. [2024-11-13 13:51:21,009 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 199 transitions. Word has length 32 [2024-11-13 13:51:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:21,009 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 199 transitions. [2024-11-13 13:51:21,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 31 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 13:51:21,010 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 199 transitions. [2024-11-13 13:51:21,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 13:51:21,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:21,012 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:21,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:51:21,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:51:21,216 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:21,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1304814078, now seen corresponding path program 1 times [2024-11-13 13:51:21,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:21,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774911247] [2024-11-13 13:51:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:21,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:22,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:51:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:22,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 13:51:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:22,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774911247] [2024-11-13 13:51:22,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774911247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102432492] [2024-11-13 13:51:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:22,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:22,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:22,329 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:22,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:51:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:22,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 13:51:22,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:22,821 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 30 treesize of output 31 [2024-11-13 13:51:22,830 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 11 [2024-11-13 13:51:22,840 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 34 treesize of output 15 [2024-11-13 13:51:22,915 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:51:22,923 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 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-13 13:51:23,032 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 30 treesize of output 18 [2024-11-13 13:51:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:23,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102432492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:23,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:51:23,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2024-11-13 13:51:23,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587233856] [2024-11-13 13:51:23,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:23,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:51:23,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:23,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:51:23,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:51:23,644 INFO L87 Difference]: Start difference. First operand 150 states and 199 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 13:51:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:25,228 INFO L93 Difference]: Finished difference Result 180 states and 235 transitions. [2024-11-13 13:51:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:51:25,229 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2024-11-13 13:51:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:25,233 INFO L225 Difference]: With dead ends: 180 [2024-11-13 13:51:25,233 INFO L226 Difference]: Without dead ends: 155 [2024-11-13 13:51:25,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:51:25,234 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 31 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:25,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 497 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 13:51:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-13 13:51:25,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 148. [2024-11-13 13:51:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 130 states have internal predecessors, (166), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 13:51:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 196 transitions. [2024-11-13 13:51:25,266 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 196 transitions. Word has length 33 [2024-11-13 13:51:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:25,266 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 196 transitions. [2024-11-13 13:51:25,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 13:51:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 196 transitions. [2024-11-13 13:51:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 13:51:25,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:25,268 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:25,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:51:25,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:51:25,472 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:25,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1413515355, now seen corresponding path program 2 times [2024-11-13 13:51:25,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:25,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458512440] [2024-11-13 13:51:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:25,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:26,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:51:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:26,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:51:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:51:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458512440] [2024-11-13 13:51:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458512440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:26,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196950604] [2024-11-13 13:51:26,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:51:26,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:26,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:26,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:51:27,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:51:27,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:51:27,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 13:51:27,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:27,031 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 10 treesize of output 8 [2024-11-13 13:51:31,391 WARN L851 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (or (= (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (exists ((|v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| |c_#memory_$Pointer$#3.offset|))) (and (= |c_#memory_$Pointer$#3.offset| (store |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| .cse0 (select |c_#memory_$Pointer$#3.offset| .cse0))) (= (select (select |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (not (= .cse0 |c_ULTIMATE.start_main_~#prio_queue~0#1.base|))))))) is different from false [2024-11-13 13:51:31,394 WARN L873 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (or (= (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (exists ((|v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| |c_#memory_$Pointer$#3.offset|))) (and (= |c_#memory_$Pointer$#3.offset| (store |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| .cse0 (select |c_#memory_$Pointer$#3.offset| .cse0))) (= (select (select |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (not (= .cse0 |c_ULTIMATE.start_main_~#prio_queue~0#1.base|))))))) is different from true [2024-11-13 13:51:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 1 not checked. [2024-11-13 13:51:31,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196950604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:31,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:31,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2024-11-13 13:51:31,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560883208] [2024-11-13 13:51:31,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:31,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:51:31,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:31,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:51:31,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=4, NotChecked=14, Total=90 [2024-11-13 13:51:31,545 INFO L87 Difference]: Start difference. First operand 148 states and 196 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:51:31,780 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0))) (and (not (= |c_ULTIMATE.start_main_~#normal_queue~0#1.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|)) (= (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) .cse0 (or .cse0 (exists ((|v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| |c_#memory_$Pointer$#3.offset|))) (and (= |c_#memory_$Pointer$#3.offset| (store |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| .cse1 (select |c_#memory_$Pointer$#3.offset| .cse1))) (= (select (select |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (not (= .cse1 |c_ULTIMATE.start_main_~#prio_queue~0#1.base|)))))))) is different from false [2024-11-13 13:51:31,786 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0))) (and (not (= |c_ULTIMATE.start_main_~#normal_queue~0#1.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|)) (= (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) .cse0 (or .cse0 (exists ((|v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| |c_#memory_$Pointer$#3.offset|))) (and (= |c_#memory_$Pointer$#3.offset| (store |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| .cse1 (select |c_#memory_$Pointer$#3.offset| .cse1))) (= (select (select |v_#memory_$Pointer$#3.offset_BEFORE_CALL_18| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 0) (not (= .cse1 |c_ULTIMATE.start_main_~#prio_queue~0#1.base|)))))))) is different from true [2024-11-13 13:51:31,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:31,853 INFO L93 Difference]: Finished difference Result 186 states and 246 transitions. [2024-11-13 13:51:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:51:31,853 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-13 13:51:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:31,855 INFO L225 Difference]: With dead ends: 186 [2024-11-13 13:51:31,855 INFO L226 Difference]: Without dead ends: 161 [2024-11-13 13:51:31,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=24, Invalid=50, Unknown=6, NotChecked=30, Total=110 [2024-11-13 13:51:31,857 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 11 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:31,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 175 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 74 Unchecked, 0.3s Time] [2024-11-13 13:51:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-13 13:51:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2024-11-13 13:51:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 137 states have (on average 1.313868613138686) internal successors, (180), 140 states have internal predecessors, (180), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 13:51:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 212 transitions. [2024-11-13 13:51:31,896 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 212 transitions. Word has length 33 [2024-11-13 13:51:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:31,896 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 212 transitions. [2024-11-13 13:51:31,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:51:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 212 transitions. [2024-11-13 13:51:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 13:51:31,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:31,897 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:31,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:51:32,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:51:32,098 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:32,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1552565733, now seen corresponding path program 1 times [2024-11-13 13:51:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:32,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471927991] [2024-11-13 13:51:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:32,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:33,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:51:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:34,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:51:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:51:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471927991] [2024-11-13 13:51:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471927991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233420815] [2024-11-13 13:51:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:34,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:34,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:34,382 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:34,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:51:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:34,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-13 13:51:34,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:34,931 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 10 treesize of output 8 [2024-11-13 13:51:35,041 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 36 treesize of output 20 [2024-11-13 13:51:35,090 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 13:51:35,096 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 15 treesize of output 1 [2024-11-13 13:51:35,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 15 [2024-11-13 13:51:35,130 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-13 13:51:35,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 13:51:35,320 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 13:51:35,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 21 [2024-11-13 13:51:35,488 INFO L349 Elim1Store]: treesize reduction 20, result has 60.0 percent of original size [2024-11-13 13:51:35,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 44 [2024-11-13 13:51:35,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:51:35,538 INFO L349 Elim1Store]: treesize reduction 95, result has 1.0 percent of original size [2024-11-13 13:51:35,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2024-11-13 13:51:35,651 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 21 [2024-11-13 13:51:35,660 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 7 [2024-11-13 13:51:35,669 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 7 [2024-11-13 13:51:35,870 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 41 treesize of output 32 [2024-11-13 13:51:35,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 13:51:35,915 INFO L349 Elim1Store]: treesize reduction 9, result has 72.7 percent of original size [2024-11-13 13:51:35,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 54 [2024-11-13 13:51:35,924 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 19 [2024-11-13 13:51:36,012 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 23 treesize of output 15 [2024-11-13 13:51:36,072 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 36 treesize of output 24 [2024-11-13 13:51:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:36,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233420815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:36,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:36,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2024-11-13 13:51:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670877134] [2024-11-13 13:51:36,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:36,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 13:51:36,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:36,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 13:51:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=605, Unknown=1, NotChecked=0, Total=702 [2024-11-13 13:51:36,389 INFO L87 Difference]: Start difference. First operand 159 states and 212 transitions. Second operand has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 13:51:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:38,168 INFO L93 Difference]: Finished difference Result 194 states and 265 transitions. [2024-11-13 13:51:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 13:51:38,169 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-13 13:51:38,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:38,171 INFO L225 Difference]: With dead ends: 194 [2024-11-13 13:51:38,171 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 13:51:38,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=282, Invalid=1523, Unknown=1, NotChecked=0, Total=1806 [2024-11-13 13:51:38,172 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 71 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:38,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 336 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:51:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 13:51:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 171. [2024-11-13 13:51:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 148 states have (on average 1.3310810810810811) internal successors, (197), 151 states have internal predecessors, (197), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-13 13:51:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2024-11-13 13:51:38,211 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 33 [2024-11-13 13:51:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:38,211 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2024-11-13 13:51:38,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 13:51:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2024-11-13 13:51:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 13:51:38,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:38,213 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:38,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:51:38,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:51:38,417 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:38,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1794220096, now seen corresponding path program 2 times [2024-11-13 13:51:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:38,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770635644] [2024-11-13 13:51:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:41,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:51:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:41,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:51:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:41,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-13 13:51:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:51:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770635644] [2024-11-13 13:51:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770635644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121725776] [2024-11-13 13:51:41,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:51:41,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:41,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:41,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:51:42,086 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:51:42,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:51:42,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 13:51:42,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:42,107 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 0 case distinctions, treesize of input 59 treesize of output 46 [2024-11-13 13:51:42,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 77 [2024-11-13 13:51:42,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2024-11-13 13:51:42,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2024-11-13 13:51:42,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:51:42,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 37 [2024-11-13 13:51:42,495 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 15 treesize of output 1 [2024-11-13 13:51:42,502 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 13:51:42,735 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-11-13 13:51:42,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 61 [2024-11-13 13:51:42,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:51:42,745 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 55 treesize of output 55 [2024-11-13 13:51:43,051 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 13:51:43,052 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 49 treesize of output 19 [2024-11-13 13:51:43,124 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 30 treesize of output 31 [2024-11-13 13:51:43,134 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 30 treesize of output 31 [2024-11-13 13:51:43,153 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 11 [2024-11-13 13:51:43,159 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 11 [2024-11-13 13:51:43,291 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:51:43,310 INFO L349 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2024-11-13 13:51:43,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 26 [2024-11-13 13:51:43,317 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 0 case distinctions, treesize of input 42 treesize of output 19 [2024-11-13 13:51:43,437 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 45 treesize of output 29 [2024-11-13 13:51:43,820 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 13:51:43,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 13:51:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:43,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:44,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121725776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:44,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:44,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 35 [2024-11-13 13:51:44,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768180162] [2024-11-13 13:51:44,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:44,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 13:51:44,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 13:51:44,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1359, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 13:51:44,662 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 35 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 5 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 13:51:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:53,941 INFO L93 Difference]: Finished difference Result 450 states and 583 transitions. [2024-11-13 13:51:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 13:51:53,942 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 5 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2024-11-13 13:51:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:53,944 INFO L225 Difference]: With dead ends: 450 [2024-11-13 13:51:53,944 INFO L226 Difference]: Without dead ends: 418 [2024-11-13 13:51:53,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=520, Invalid=5486, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 13:51:53,946 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 176 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:53,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1151 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-13 13:51:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-13 13:51:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 256. [2024-11-13 13:51:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 222 states have (on average 1.3018018018018018) internal successors, (289), 223 states have internal predecessors, (289), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-13 13:51:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 337 transitions. [2024-11-13 13:51:53,990 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 337 transitions. Word has length 40 [2024-11-13 13:51:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:53,991 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 337 transitions. [2024-11-13 13:51:53,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 5 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 13:51:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 337 transitions. [2024-11-13 13:51:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:51:53,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:53,992 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:54,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:51:54,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:51:54,193 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:54,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1985152429, now seen corresponding path program 1 times [2024-11-13 13:51:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905843558] [2024-11-13 13:51:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:55,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:51:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:56,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:51:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:57,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:51:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:51:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905843558] [2024-11-13 13:51:57,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905843558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695001644] [2024-11-13 13:51:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:57,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:57,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:57,661 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:57,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:51:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:58,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-13 13:51:58,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:58,182 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 10 treesize of output 8 [2024-11-13 13:51:58,263 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 34 treesize of output 15 [2024-11-13 13:51:58,274 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 34 treesize of output 15 [2024-11-13 13:51:58,370 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 3 [2024-11-13 13:51:58,376 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 19 treesize of output 11 [2024-11-13 13:51:58,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 11 [2024-11-13 13:51:59,026 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 31 treesize of output 24 [2024-11-13 13:51:59,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 13:51:59,049 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 13:51:59,049 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 13:51:59,070 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 13:51:59,070 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 13:51:59,229 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 34 [2024-11-13 13:51:59,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:51:59,333 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 56 treesize of output 48 [2024-11-13 13:51:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:59,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:52:00,231 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 1662 treesize of output 1622 [2024-11-13 13:52:00,364 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (not (= (mod |c_ULTIMATE.start_main_#t~mem43#1| 4294967296) 1)))) (and (forall ((v_append_to_queue_~node~0.base_82 Int) (v_ArrVal_3860 (Array Int Int)) (v_ArrVal_3863 (Array Int Int)) (v_ArrVal_3864 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3864) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|))) (or (= v_append_to_queue_~node~0.base_82 .cse0) (= (select (select (store |c_#memory_$Pointer$#1.base| v_append_to_queue_~node~0.base_82 v_ArrVal_3863) .cse0) (+ (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3860) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 12)) 0)))) (forall ((v_append_to_queue_~node~0.base_82 Int) (v_ArrVal_3860 (Array Int Int)) (v_ArrVal_3862 (Array Int Int)) (v_ArrVal_3864 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3860) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|))) (or (= .cse1 0) (= (select (select (store |c_#memory_$Pointer$#1.offset| v_append_to_queue_~node~0.base_82 v_ArrVal_3862) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3864) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|)) (+ .cse1 12)) 0)))) (forall ((v_append_to_queue_~node~0.base_82 Int) (v_ArrVal_3860 (Array Int Int)) (v_ArrVal_3862 (Array Int Int)) (v_ArrVal_3864 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3864) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|))) (or (= v_append_to_queue_~node~0.base_82 .cse2) (= (select (select (store |c_#memory_$Pointer$#1.offset| v_append_to_queue_~node~0.base_82 v_ArrVal_3862) .cse2) (+ (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3860) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 12)) 0)))) (forall ((v_append_to_queue_~node~0.base_82 Int) (v_ArrVal_3860 (Array Int Int)) (v_ArrVal_3863 (Array Int Int)) (v_ArrVal_3864 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3860) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|))) (or (= .cse3 0) (= (select (select (store |c_#memory_$Pointer$#1.base| v_append_to_queue_~node~0.base_82 v_ArrVal_3863) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3864) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|)) (+ .cse3 12)) 0)))) (or (forall ((v_append_to_queue_~node~0.base_82 Int) (v_ArrVal_3860 (Array Int Int)) (v_ArrVal_3863 (Array Int Int)) (v_ArrVal_3864 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| v_append_to_queue_~node~0.base_82 v_ArrVal_3863) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3864) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3860) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 12)) 0)) .cse4) (or (forall ((v_append_to_queue_~node~0.base_82 Int) (v_ArrVal_3860 (Array Int Int)) (v_ArrVal_3862 (Array Int Int)) (v_ArrVal_3864 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| v_append_to_queue_~node~0.base_82 v_ArrVal_3862) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3864) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#normal_queue~0#1.base| v_ArrVal_3860) |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|) 12)) 0)) .cse4))) is different from false [2024-11-13 13:52:00,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695001644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:52:00,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:52:00,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 28 [2024-11-13 13:52:00,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945660565] [2024-11-13 13:52:00,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:52:00,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 13:52:00,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 13:52:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=825, Unknown=1, NotChecked=58, Total=992 [2024-11-13 13:52:00,370 INFO L87 Difference]: Start difference. First operand 256 states and 337 transitions. Second operand has 28 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 24 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:52:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:05,802 INFO L93 Difference]: Finished difference Result 588 states and 789 transitions. [2024-11-13 13:52:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 13:52:05,802 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 24 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2024-11-13 13:52:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:05,805 INFO L225 Difference]: With dead ends: 588 [2024-11-13 13:52:05,805 INFO L226 Difference]: Without dead ends: 536 [2024-11-13 13:52:05,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=300, Invalid=2355, Unknown=1, NotChecked=100, Total=2756 [2024-11-13 13:52:05,810 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 113 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:05,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 754 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 13:52:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-13 13:52:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 404. [2024-11-13 13:52:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 354 states have (on average 1.310734463276836) internal successors, (464), 355 states have internal predecessors, (464), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-13 13:52:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 540 transitions. [2024-11-13 13:52:05,904 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 540 transitions. Word has length 41 [2024-11-13 13:52:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:05,905 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 540 transitions. [2024-11-13 13:52:05,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 24 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:52:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 540 transitions. [2024-11-13 13:52:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:52:05,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:05,907 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:05,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 13:52:06,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:52:06,107 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:06,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1830494355, now seen corresponding path program 1 times [2024-11-13 13:52:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:06,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531946043] [2024-11-13 13:52:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:07,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:52:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:07,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:52:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:07,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:52:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:52:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531946043] [2024-11-13 13:52:07,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531946043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:07,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:07,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 13:52:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318536336] [2024-11-13 13:52:07,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:07,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:52:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:52:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:52:07,561 INFO L87 Difference]: Start difference. First operand 404 states and 540 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 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 13:52:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:08,489 INFO L93 Difference]: Finished difference Result 497 states and 654 transitions. [2024-11-13 13:52:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 13:52:08,490 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 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) Word has length 41 [2024-11-13 13:52:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:08,492 INFO L225 Difference]: With dead ends: 497 [2024-11-13 13:52:08,492 INFO L226 Difference]: Without dead ends: 442 [2024-11-13 13:52:08,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:52:08,493 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 14 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:08,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 466 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:52:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-13 13:52:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 404. [2024-11-13 13:52:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 354 states have (on average 1.2994350282485876) internal successors, (460), 355 states have internal predecessors, (460), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-13 13:52:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 536 transitions. [2024-11-13 13:52:08,587 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 536 transitions. Word has length 41 [2024-11-13 13:52:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:08,588 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 536 transitions. [2024-11-13 13:52:08,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 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 13:52:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 536 transitions. [2024-11-13 13:52:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:52:08,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:08,590 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:08,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:52:08,590 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:08,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1572328917, now seen corresponding path program 1 times [2024-11-13 13:52:08,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:08,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088012388] [2024-11-13 13:52:08,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:08,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:10,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:52:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:11,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:52:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:11,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:52:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:52:11,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088012388] [2024-11-13 13:52:11,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088012388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:52:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264125339] [2024-11-13 13:52:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:52:11,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:52:11,588 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:52:11,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:52:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:12,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 13:52:12,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:12,329 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 0 case distinctions, treesize of input 51 treesize of output 38 [2024-11-13 13:52:12,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 69 [2024-11-13 13:52:12,351 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 28 treesize of output 22 [2024-11-13 13:52:12,368 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 13:52:12,368 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 1 case distinctions, treesize of input 11 treesize of output 9 [2024-11-13 13:52:12,574 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 40 treesize of output 16 [2024-11-13 13:52:12,667 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 13:52:12,678 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 0 case distinctions, treesize of input 42 treesize of output 35 [2024-11-13 13:52:12,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 11 [2024-11-13 13:52:12,718 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 15 treesize of output 1 [2024-11-13 13:52:12,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:52:12,929 INFO L349 Elim1Store]: treesize reduction 40, result has 31.0 percent of original size [2024-11-13 13:52:12,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 37 [2024-11-13 13:52:13,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2024-11-13 13:52:13,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:52:13,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 13:52:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:52:13,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:52:13,158 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-13 13:52:13,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 1 [2024-11-13 13:52:13,296 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 30 treesize of output 31 [2024-11-13 13:52:13,306 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 11 [2024-11-13 13:52:13,329 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 34 treesize of output 15 [2024-11-13 13:52:13,476 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:52:13,509 INFO L349 Elim1Store]: treesize reduction 17, result has 58.5 percent of original size [2024-11-13 13:52:13,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 45 treesize of output 54 [2024-11-13 13:52:13,517 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 0 case distinctions, treesize of input 62 treesize of output 31 [2024-11-13 13:52:13,528 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 32 treesize of output 19 [2024-11-13 13:52:13,640 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 13:52:13,919 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 13:52:13,932 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 13:52:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:52:13,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:52:14,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264125339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:52:14,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:52:14,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 30 [2024-11-13 13:52:14,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304625877] [2024-11-13 13:52:14,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:52:14,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 13:52:14,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:14,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 13:52:14,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:52:14,554 INFO L87 Difference]: Start difference. First operand 404 states and 536 transitions. Second operand has 30 states, 28 states have (on average 2.25) internal successors, (63), 26 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:52:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:20,001 INFO L93 Difference]: Finished difference Result 642 states and 844 transitions. [2024-11-13 13:52:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 13:52:20,001 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.25) internal successors, (63), 26 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2024-11-13 13:52:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:20,007 INFO L225 Difference]: With dead ends: 642 [2024-11-13 13:52:20,007 INFO L226 Difference]: Without dead ends: 592 [2024-11-13 13:52:20,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=370, Invalid=3290, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 13:52:20,009 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 101 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:20,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 673 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-13 13:52:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-13 13:52:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 424. [2024-11-13 13:52:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 372 states have (on average 1.2956989247311828) internal successors, (482), 373 states have internal predecessors, (482), 40 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-13 13:52:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 562 transitions. [2024-11-13 13:52:20,097 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 562 transitions. Word has length 41 [2024-11-13 13:52:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:20,097 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 562 transitions. [2024-11-13 13:52:20,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.25) internal successors, (63), 26 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:52:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 562 transitions. [2024-11-13 13:52:20,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:52:20,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:20,099 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:20,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 13:52:20,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:52:20,300 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:20,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash 423747013, now seen corresponding path program 2 times [2024-11-13 13:52:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:20,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270224061] [2024-11-13 13:52:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:21,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:52:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:22,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:52:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:22,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:52:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:52:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270224061] [2024-11-13 13:52:22,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270224061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:52:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451885881] [2024-11-13 13:52:22,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:52:22,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:52:22,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:52:22,315 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:52:22,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:52:22,874 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:52:22,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:52:22,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-13 13:52:22,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:27,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 31 [2024-11-13 13:52:27,026 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 15 treesize of output 1 [2024-11-13 13:52:27,029 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 13:52:27,240 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 0 case distinctions, treesize of input 51 treesize of output 38 [2024-11-13 13:52:27,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 69 [2024-11-13 13:52:27,255 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 28 treesize of output 22 [2024-11-13 13:52:27,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:52:27,556 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 73 treesize of output 77 [2024-11-13 13:52:27,689 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 34 treesize of output 15 [2024-11-13 13:52:27,702 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 30 treesize of output 31 [2024-11-13 13:52:27,710 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 11 [2024-11-13 13:52:31,835 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:52:31,861 INFO L349 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2024-11-13 13:52:31,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 40 [2024-11-13 13:52:31,871 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 0 case distinctions, treesize of input 54 treesize of output 27 [2024-11-13 13:52:32,005 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 63 treesize of output 39 [2024-11-13 13:52:32,396 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 29 treesize of output 17 [2024-11-13 13:52:32,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 13:52:32,602 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 13:52:32,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 40 [2024-11-13 13:52:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:52:32,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:52:33,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:52:33,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 8 [2024-11-13 13:52:33,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:52:33,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 22 [2024-11-13 13:52:33,378 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_append_to_queue_~node~0.base_106 Int) (v_DerPreprocessor_42 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int#1| v_append_to_queue_~node~0.base_106 v_DerPreprocessor_42) (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|))) (.cse1 (select (select |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base|) |c_ULTIMATE.start_main_~#prio_queue~0#1.offset|))) (or (< (mod (select .cse0 .cse1) 4294967296) 500) (not (= v_DerPreprocessor_42 (store (store (store (store (select |c_#memory_int#1| v_append_to_queue_~node~0.base_106) 0 (select v_DerPreprocessor_42 0)) 4 |c_ULTIMATE.start_main_#t~mem36#1|) 8 (select v_DerPreprocessor_42 8)) 12 (select v_DerPreprocessor_42 12)))) (= (mod (select .cse0 (+ .cse1 4)) 4294967296) 1)))) is different from false [2024-11-13 13:52:33,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451885881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:52:33,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:52:33,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 33 [2024-11-13 13:52:33,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634985036] [2024-11-13 13:52:33,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:52:33,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 13:52:33,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:33,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 13:52:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1228, Unknown=3, NotChecked=70, Total=1406 [2024-11-13 13:52:33,382 INFO L87 Difference]: Start difference. First operand 424 states and 562 transitions. Second operand has 33 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:52:38,011 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 13:52:42,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:52:54,635 WARN L539 Checker$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 13:52:58,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:53:07,594 WARN L539 Checker$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 13:53:11,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:53:15,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:53:20,978 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 13:53:27,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:27,895 INFO L93 Difference]: Finished difference Result 909 states and 1208 transitions. [2024-11-13 13:53:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-13 13:53:27,896 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2024-11-13 13:53:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:27,900 INFO L225 Difference]: With dead ends: 909 [2024-11-13 13:53:27,900 INFO L226 Difference]: Without dead ends: 907 [2024-11-13 13:53:27,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=668, Invalid=6812, Unknown=6, NotChecked=170, Total=7656 [2024-11-13 13:53:27,904 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 126 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 39 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:27,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1162 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2890 Invalid, 8 Unknown, 0 Unchecked, 37.7s Time] [2024-11-13 13:53:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2024-11-13 13:53:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 621. [2024-11-13 13:53:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 542 states have (on average 1.3099630996309963) internal successors, (710), 543 states have internal predecessors, (710), 61 states have call successors, (61), 16 states have call predecessors, (61), 16 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-13 13:53:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 832 transitions. [2024-11-13 13:53:28,026 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 832 transitions. Word has length 41 [2024-11-13 13:53:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:28,026 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 832 transitions. [2024-11-13 13:53:28,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:53:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 832 transitions. [2024-11-13 13:53:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 13:53:28,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:28,029 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:28,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:53:28,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:28,230 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:53:28,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash -644432215, now seen corresponding path program 1 times [2024-11-13 13:53:28,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:28,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476678760] [2024-11-13 13:53:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:28,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:53:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:28,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:53:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:28,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 13:53:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:53:28,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476678760] [2024-11-13 13:53:28,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476678760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220630979] [2024-11-13 13:53:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:28,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:28,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:28,746 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:28,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:53:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:29,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 13:53:29,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:29,526 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 10 treesize of output 8 [2024-11-13 13:53:29,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 13:53:29,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 13:53:29,732 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 34 treesize of output 15 [2024-11-13 13:53:29,740 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 30 treesize of output 31 [2024-11-13 13:53:29,749 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 11 [2024-11-13 13:53:29,811 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:53:29,823 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 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-13 13:53:29,941 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 30 treesize of output 18 [2024-11-13 13:53:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:53:30,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:30,684 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5529 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_~#prio_queue~0#1.base| v_ArrVal_5529) |c_ULTIMATE.start_main_~#normal_queue~0#1.base|) |c_ULTIMATE.start_main_~#normal_queue~0#1.offset|) 0)) (forall ((v_ArrVal_5528 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~#prio_queue~0#1.base| v_ArrVal_5528) |c_ULTIMATE.start_main_~#normal_queue~0#1.base|) |c_ULTIMATE.start_main_~#normal_queue~0#1.offset|) 0))) is different from false [2024-11-13 13:53:30,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220630979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:30,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:53:30,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2024-11-13 13:53:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613344455] [2024-11-13 13:53:30,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:30,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:53:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:53:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=445, Unknown=1, NotChecked=42, Total=552 [2024-11-13 13:53:30,688 INFO L87 Difference]: Start difference. First operand 621 states and 832 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:53:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:33,311 INFO L93 Difference]: Finished difference Result 881 states and 1168 transitions. [2024-11-13 13:53:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 13:53:33,311 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2024-11-13 13:53:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:33,315 INFO L225 Difference]: With dead ends: 881 [2024-11-13 13:53:33,315 INFO L226 Difference]: Without dead ends: 762 [2024-11-13 13:53:33,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=1159, Unknown=1, NotChecked=70, Total=1406 [2024-11-13 13:53:33,318 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 131 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:33,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 952 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 13:53:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-13 13:53:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 674. [2024-11-13 13:53:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 588 states have (on average 1.2908163265306123) internal successors, (759), 589 states have internal predecessors, (759), 67 states have call successors, (67), 17 states have call predecessors, (67), 17 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-13 13:53:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 893 transitions. [2024-11-13 13:53:33,485 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 893 transitions. Word has length 44 [2024-11-13 13:53:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:33,485 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 893 transitions. [2024-11-13 13:53:33,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:53:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 893 transitions. [2024-11-13 13:53:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 13:53:33,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:33,487 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:33,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:53:33,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:33,688 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:53:33,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash -753133492, now seen corresponding path program 2 times [2024-11-13 13:53:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088047129] [2024-11-13 13:53:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:36,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:53:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:36,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:53:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:37,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-13 13:53:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:53:37,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:37,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088047129] [2024-11-13 13:53:37,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088047129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:37,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762778709] [2024-11-13 13:53:37,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:53:37,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:37,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:37,727 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:37,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:53:38,415 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:53:38,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:53:38,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-13 13:53:38,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:38,433 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 10 treesize of output 8 [2024-11-13 13:53:38,548 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 40 treesize of output 16 [2024-11-13 13:53:38,568 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 13:53:38,584 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 0 case distinctions, treesize of input 50 treesize of output 43 [2024-11-13 13:53:38,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:38,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:38,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 13:53:38,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 11 [2024-11-13 13:53:38,620 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 15 treesize of output 1 [2024-11-13 13:53:38,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:38,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 13:53:38,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:38,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:38,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2024-11-13 13:53:38,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:38,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 13:53:38,985 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 30 treesize of output 18 [2024-11-13 13:53:38,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 13:53:39,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 13:53:39,634 INFO L349 Elim1Store]: treesize reduction 198, result has 27.5 percent of original size [2024-11-13 13:53:39,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 79 treesize of output 158 [2024-11-13 13:53:39,687 INFO L349 Elim1Store]: treesize reduction 66, result has 12.0 percent of original size [2024-11-13 13:53:39,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 80 [2024-11-13 13:53:39,707 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 50 treesize of output 39 [2024-11-13 13:53:40,387 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 13:53:40,387 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 2 case distinctions, treesize of input 21 treesize of output 5 [2024-11-13 13:53:40,436 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 13:53:40,436 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 2 case distinctions, treesize of input 21 treesize of output 5 [2024-11-13 13:53:40,590 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:53:40,591 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 21 treesize of output 5 [2024-11-13 13:53:41,511 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-11-13 13:53:41,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 17 [2024-11-13 13:53:41,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:41,583 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-11-13 13:53:41,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 20 [2024-11-13 13:53:41,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:41,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 9 [2024-11-13 13:53:41,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 13:53:42,664 INFO L349 Elim1Store]: treesize reduction 124, result has 43.1 percent of original size [2024-11-13 13:53:42,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 531 treesize of output 558 [2024-11-13 13:53:43,429 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-13 13:53:43,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 24 [2024-11-13 13:53:43,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:43,459 INFO L349 Elim1Store]: treesize reduction 95, result has 1.0 percent of original size [2024-11-13 13:53:43,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2024-11-13 13:53:47,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2024-11-13 13:53:47,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 13:53:47,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:47,745 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 13:53:47,776 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2024-11-13 13:53:47,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 42 [2024-11-13 13:53:47,849 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 13:53:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:53:47,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:48,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762778709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:48,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:53:48,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2024-11-13 13:53:48,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469379656] [2024-11-13 13:53:48,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:48,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 13:53:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:48,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 13:53:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=857, Unknown=1, NotChecked=0, Total=992 [2024-11-13 13:53:48,260 INFO L87 Difference]: Start difference. First operand 674 states and 893 transitions. Second operand has 29 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 27 states have internal predecessors, (68), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 13:54:00,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:54:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:54:01,476 INFO L93 Difference]: Finished difference Result 830 states and 1086 transitions. [2024-11-13 13:54:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 13:54:01,476 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 27 states have internal predecessors, (68), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 44 [2024-11-13 13:54:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:54:01,480 INFO L225 Difference]: With dead ends: 830 [2024-11-13 13:54:01,480 INFO L226 Difference]: Without dead ends: 784 [2024-11-13 13:54:01,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=243, Invalid=1478, Unknown=1, NotChecked=0, Total=1722 [2024-11-13 13:54:01,482 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:54:01,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 405 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-13 13:54:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-13 13:54:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 680. [2024-11-13 13:54:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 593 states have (on average 1.2951096121416525) internal successors, (768), 594 states have internal predecessors, (768), 68 states have call successors, (68), 17 states have call predecessors, (68), 17 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-13 13:54:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 904 transitions. [2024-11-13 13:54:01,655 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 904 transitions. Word has length 44 [2024-11-13 13:54:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:54:01,656 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 904 transitions. [2024-11-13 13:54:01,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 27 states have internal predecessors, (68), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 13:54:01,656 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 904 transitions. [2024-11-13 13:54:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 13:54:01,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:54:01,658 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:54:01,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:54:01,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:54:01,859 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:54:01,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1036910810, now seen corresponding path program 1 times [2024-11-13 13:54:01,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:54:01,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313511184] [2024-11-13 13:54:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:01,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:54:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:04,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:54:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:04,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:54:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:05,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:54:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:54:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:54:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313511184] [2024-11-13 13:54:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313511184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:54:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014525992] [2024-11-13 13:54:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:05,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:54:05,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:54:05,568 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:54:05,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:54:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:06,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-13 13:54:06,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:54:06,326 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 10 treesize of output 8 [2024-11-13 13:54:07,081 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 15 treesize of output 1 [2024-11-13 13:54:07,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2024-11-13 13:54:07,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 11 [2024-11-13 13:54:07,154 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 13:54:08,113 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 0 case distinctions, treesize of input 59 treesize of output 46 [2024-11-13 13:54:08,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 77 [2024-11-13 13:54:08,173 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 46 treesize of output 36 [2024-11-13 13:54:08,318 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:54:08,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2024-11-13 13:54:10,329 INFO L349 Elim1Store]: treesize reduction 6, result has 85.4 percent of original size [2024-11-13 13:54:10,330 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 73 treesize of output 71 [2024-11-13 13:54:11,729 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 19 treesize of output 18 [2024-11-13 13:54:11,892 INFO L349 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2024-11-13 13:54:11,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 40 [2024-11-13 13:54:11,922 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 39 treesize of output 23 [2024-11-13 13:54:16,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:54:16,175 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 79 treesize of output 91 [2024-11-13 13:54:16,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:54:16,441 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 59 treesize of output 83 [2024-11-13 13:54:18,051 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 13:54:18,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 39 [2024-11-13 13:54:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:54:18,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:54:21,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014525992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:54:21,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:54:21,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 32 [2024-11-13 13:54:21,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804949702] [2024-11-13 13:54:21,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:54:21,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 13:54:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:54:21,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 13:54:21,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 13:54:21,221 INFO L87 Difference]: Start difference. First operand 680 states and 904 transitions. Second operand has 32 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:54:51,164 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 13:55:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:09,019 INFO L93 Difference]: Finished difference Result 955 states and 1264 transitions. [2024-11-13 13:55:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 13:55:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2024-11-13 13:55:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:09,026 INFO L225 Difference]: With dead ends: 955 [2024-11-13 13:55:09,027 INFO L226 Difference]: Without dead ends: 953 [2024-11-13 13:55:09,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2274 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=905, Invalid=7104, Unknown=1, NotChecked=0, Total=8010 [2024-11-13 13:55:09,030 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 310 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 79 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:09,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 874 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1550 Invalid, 5 Unknown, 0 Unchecked, 22.2s Time] [2024-11-13 13:55:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2024-11-13 13:55:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 788. [2024-11-13 13:55:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 684 states have (on average 1.2982456140350878) internal successors, (888), 685 states have internal predecessors, (888), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-13 13:55:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1044 transitions. [2024-11-13 13:55:09,247 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1044 transitions. Word has length 44 [2024-11-13 13:55:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:09,248 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1044 transitions. [2024-11-13 13:55:09,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:55:09,248 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1044 transitions. [2024-11-13 13:55:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 13:55:09,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:09,250 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:55:09,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:55:09,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:55:09,451 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:09,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1036912732, now seen corresponding path program 1 times [2024-11-13 13:55:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004509879] [2024-11-13 13:55:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:09,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:55:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:13,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:55:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:14,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:55:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:55:14,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004509879] [2024-11-13 13:55:14,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004509879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:55:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622125856] [2024-11-13 13:55:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:14,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:55:14,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:55:14,143 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:55:14,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:55:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:14,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-13 13:55:14,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:55:14,877 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 10 treesize of output 8 [2024-11-13 13:55:14,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2024-11-13 13:55:17,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 15 [2024-11-13 13:55:17,300 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-13 13:55:17,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 13:55:17,373 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 15 treesize of output 1 [2024-11-13 13:55:17,453 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 13:55:18,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:18,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 13:55:19,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:19,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 13:55:19,720 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-13 13:55:19,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 15 [2024-11-13 13:55:19,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:19,776 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 43 treesize of output 35 [2024-11-13 13:55:19,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:20,032 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-13 13:55:20,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2024-11-13 13:55:22,284 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-11-13 13:55:22,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 40 [2024-11-13 13:55:22,675 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 30 treesize of output 18 [2024-11-13 13:55:22,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 13:55:22,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 13:55:23,605 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 19 treesize of output 18 [2024-11-13 13:55:23,726 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2024-11-13 13:55:23,726 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 40 treesize of output 40 [2024-11-13 13:55:23,756 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 48 treesize of output 28 [2024-11-13 13:55:23,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 26 [2024-11-13 13:55:26,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-11-13 13:55:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:55:26,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:55:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622125856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:55:47,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:55:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 36 [2024-11-13 13:55:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932957774] [2024-11-13 13:55:47,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:55:47,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 13:55:47,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 13:55:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1317, Unknown=3, NotChecked=0, Total=1482 [2024-11-13 13:55:47,137 INFO L87 Difference]: Start difference. First operand 788 states and 1044 transitions. Second operand has 36 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:56:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:17,485 INFO L93 Difference]: Finished difference Result 1200 states and 1559 transitions. [2024-11-13 13:56:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 13:56:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2024-11-13 13:56:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:17,490 INFO L225 Difference]: With dead ends: 1200 [2024-11-13 13:56:17,491 INFO L226 Difference]: Without dead ends: 1162 [2024-11-13 13:56:17,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=623, Invalid=5536, Unknown=3, NotChecked=0, Total=6162 [2024-11-13 13:56:17,494 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 202 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 52 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:17,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1065 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1607 Invalid, 6 Unknown, 0 Unchecked, 18.0s Time] [2024-11-13 13:56:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2024-11-13 13:56:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 722. [2024-11-13 13:56:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 626 states have (on average 1.3035143769968052) internal successors, (816), 627 states have internal predecessors, (816), 72 states have call successors, (72), 22 states have call predecessors, (72), 22 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-13 13:56:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 960 transitions. [2024-11-13 13:56:17,767 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 960 transitions. Word has length 44 [2024-11-13 13:56:17,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:17,767 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 960 transitions. [2024-11-13 13:56:17,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:56:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 960 transitions. [2024-11-13 13:56:17,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 13:56:17,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:17,769 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:56:17,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:56:17,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:17,970 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:17,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash 442123246, now seen corresponding path program 2 times [2024-11-13 13:56:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:17,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949216879] [2024-11-13 13:56:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:21,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:56:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:21,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:56:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:22,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 13:56:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:56:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949216879] [2024-11-13 13:56:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949216879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:56:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763964030] [2024-11-13 13:56:22,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:56:22,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:22,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:56:22,626 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:56:22,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2e5923-f9a7-4d2c-8ea4-d59c9dd6feaa/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:56:23,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:56:23,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:56:23,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-13 13:56:23,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:56:23,408 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 0 case distinctions, treesize of input 59 treesize of output 46 [2024-11-13 13:56:23,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 77 [2024-11-13 13:56:23,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2024-11-13 13:56:25,724 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 15 treesize of output 1 [2024-11-13 13:56:25,836 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 13:56:25,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 31 [2024-11-13 13:56:30,134 INFO L349 Elim1Store]: treesize reduction 128, result has 59.1 percent of original size [2024-11-13 13:56:30,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 174 treesize of output 297 [2024-11-13 13:56:30,301 INFO L224 Elim1Store]: Index analysis took 104 ms [2024-11-13 13:56:31,328 INFO L349 Elim1Store]: treesize reduction 48, result has 62.8 percent of original size [2024-11-13 13:56:31,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 96 treesize of output 140 [2024-11-13 14:01:02,178 WARN L286 SmtUtils]: Spent 1.89m on a formula simplification that was a NOOP. DAG size: 5044 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 14:01:02,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:01:02,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 41 select indices, 41 select index equivalence classes, 0 disjoint index pairs (out of 820 index pairs), introduced 41 new quantified variables, introduced 820 case distinctions, treesize of input 724 treesize of output 10276