./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 037e795cce503850d2c4452c45fcb076e5748c33e58ba9a275ca2db56216e774 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:58:57,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:58:58,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 04:58:58,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:58:58,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:58:58,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:58:58,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:58:58,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:58:58,177 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:58:58,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:58:58,179 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:58:58,180 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:58:58,180 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:58:58,180 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:58:58,180 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:58:58,181 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:58:58,181 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:58:58,181 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:58:58,181 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:58:58,181 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:58:58,182 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:58:58,183 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:58:58,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:58:58,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:58:58,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:58:58,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:58:58,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:58:58,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:58:58,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:58:58,185 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:58:58,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:58:58,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:58:58,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:58:58,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:58:58,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:58:58,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:58:58,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:58:58,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:58:58,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:58:58,187 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:58:58,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:58:58,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:58:58,188 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:58:58,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:58:58,188 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 037e795cce503850d2c4452c45fcb076e5748c33e58ba9a275ca2db56216e774 [2024-11-14 04:58:58,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:58:58,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:58:58,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:58:58,624 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:58:58,624 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:58:58,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-14 04:59:00,876 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:59:01,754 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:59:01,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2024-11-14 04:59:01,824 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/data/68b083aa5/c1b17b2e75114ee1a659bd77d2036269/FLAG120a4639d [2024-11-14 04:59:01,850 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/data/68b083aa5/c1b17b2e75114ee1a659bd77d2036269 [2024-11-14 04:59:01,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:59:01,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:59:01,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:59:01,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:59:01,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:59:01,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:59:01" (1/1) ... [2024-11-14 04:59:01,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bd3ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:01, skipping insertion in model container [2024-11-14 04:59:01,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:59:01" (1/1) ... [2024-11-14 04:59:02,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:59:04,377 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_c3dd48a2-5e3e-4f79-8812-58f316409dc7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[261739,261752] [2024-11-14 04:59:04,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:59:04,756 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:59:05,417 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_c3dd48a2-5e3e-4f79-8812-58f316409dc7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[261739,261752] [2024-11-14 04:59:05,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:59:05,638 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:59:05,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05 WrapperNode [2024-11-14 04:59:05,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:59:05,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:59:05,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:59:05,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:59:05,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:05,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,260 INFO L138 Inliner]: procedures = 308, calls = 4884, calls flagged for inlining = 114, calls inlined = 104, statements flattened = 8952 [2024-11-14 04:59:06,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:59:06,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:59:06,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:59:06,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:59:06,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:59:06,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:59:06,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:59:06,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:59:06,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (1/1) ... [2024-11-14 04:59:06,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:59:06,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:59:06,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:59:06,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:59:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2024-11-14 04:59:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2024-11-14 04:59:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure con_copy_unimap [2024-11-14 04:59:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure con_copy_unimap [2024-11-14 04:59:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_exit [2024-11-14 04:59:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_exit [2024-11-14 04:59:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure con_is_bound [2024-11-14 04:59:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure con_is_bound [2024-11-14 04:59:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove [2024-11-14 04:59:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove [2024-11-14 04:59:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_display [2024-11-14 04:59:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_display [2024-11-14 04:59:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure do_fbcon_takeover [2024-11-14 04:59:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fbcon_takeover [2024-11-14 04:59:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-14 04:59:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 04:59:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-14 04:59:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-14 04:59:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-14 04:59:06,929 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-14 04:59:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 04:59:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 04:59:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_release_oldinfo [2024-11-14 04:59:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_release_oldinfo [2024-11-14 04:59:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memcpyw [2024-11-14 04:59:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memcpyw [2024-11-14 04:59:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2024-11-14 04:59:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2024-11-14 04:59:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure get_default_font [2024-11-14 04:59:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure get_default_font [2024-11-14 04:59:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2024-11-14 04:59:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2024-11-14 04:59:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_putcs [2024-11-14 04:59:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_putcs [2024-11-14 04:59:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure get_color [2024-11-14 04:59:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure get_color [2024-11-14 04:59:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memsetw [2024-11-14 04:59:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memsetw [2024-11-14 04:59:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-14 04:59:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-14 04:59:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_con_driver [2024-11-14 04:59:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_con_driver [2024-11-14 04:59:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-14 04:59:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-14 04:59:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_get_font [2024-11-14 04:59:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_get_font [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure real_y [2024-11-14 04:59:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure real_y [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_update_softback [2024-11-14 04:59:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_update_softback [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 04:59:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 04:59:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure update_region [2024-11-14 04:59:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure update_region [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure fb_flashcursor [2024-11-14 04:59:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_flashcursor [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure find_font [2024-11-14 04:59:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure find_font [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:59:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2024-11-14 04:59:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2024-11-14 04:59:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_disp [2024-11-14 04:59:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_disp [2024-11-14 04:59:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2024-11-14 04:59:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2024-11-14 04:59:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:59:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear_margins [2024-11-14 04:59:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear_margins [2024-11-14 04:59:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-14 04:59:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-14 04:59:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure display_to_var [2024-11-14 04:59:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure display_to_var [2024-11-14 04:59:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:59:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:59:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-14 04:59:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-14 04:59:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2024-11-14 04:59:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2024-11-14 04:59:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2024-11-14 04:59:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2024-11-14 04:59:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-14 04:59:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-14 04:59:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2024-11-14 04:59:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2024-11-14 04:59:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-14 04:59:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-14 04:59:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2024-11-14 04:59:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2024-11-14 04:59:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_del_cursor_timer [2024-11-14 04:59:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_del_cursor_timer [2024-11-14 04:59:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_move [2024-11-14 04:59:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_move [2024-11-14 04:59:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-14 04:59:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2024-11-14 04:59:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2024-11-14 04:59:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 04:59:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_is_inactive [2024-11-14 04:59:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_is_inactive [2024-11-14 04:59:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear [2024-11-14 04:59:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear [2024-11-14 04:59:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_add_cursor_timer [2024-11-14 04:59:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_add_cursor_timer [2024-11-14 04:59:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:59:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2024-11-14 04:59:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2024-11-14 04:59:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-14 04:59:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-14 04:59:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure set_blitting_type [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blitting_type [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_palette [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_palette [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure set_con2fb_map [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure set_con2fb_map [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure console_conditional_schedule [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure console_conditional_schedule [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_copy_font [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_copy_font [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_do_set_font [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_do_set_font [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-14 04:59:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-14 04:59:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_acquire_newinfo [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_acquire_newinfo [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_prepare_logo [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_prepare_logo [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_blit [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_blit [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2024-11-14 04:59:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2024-11-14 04:59:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2024-11-14 04:59:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2024-11-14 04:59:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2024-11-14 04:59:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_modechanged [2024-11-14 04:59:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_modechanged [2024-11-14 04:59:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2024-11-14 04:59:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2024-11-14 04:59:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_invert_region [2024-11-14 04:59:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_invert_region [2024-11-14 04:59:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2024-11-14 04:59:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2024-11-14 04:59:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_all_vcs [2024-11-14 04:59:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_all_vcs [2024-11-14 04:59:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw [2024-11-14 04:59:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw [2024-11-14 04:59:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure updatescrollmode [2024-11-14 04:59:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure updatescrollmode [2024-11-14 04:59:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2024-11-14 04:59:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2024-11-14 04:59:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2024-11-14 04:59:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2024-11-14 04:59:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 04:59:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 04:59:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure redraw_screen [2024-11-14 04:59:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure redraw_screen [2024-11-14 04:59:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:59:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure search_fb_in_map [2024-11-14 04:59:06,953 INFO L138 BoogieDeclarations]: Found implementation of procedure search_fb_in_map [2024-11-14 04:59:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure con_set_default_unimap [2024-11-14 04:59:06,953 INFO L138 BoogieDeclarations]: Found implementation of procedure con_set_default_unimap [2024-11-14 04:59:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2024-11-14 04:59:06,953 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2024-11-14 04:59:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:59:06,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:59:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-14 04:59:06,954 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-14 04:59:08,438 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:59:08,443 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:59:11,387 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-14 04:59:44,071 INFO L? ?]: Removed 2509 outVars from TransFormulas that were not future-live. [2024-11-14 04:59:44,071 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:59:48,536 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:59:48,536 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:59:48,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:59:48 BoogieIcfgContainer [2024-11-14 04:59:48,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:59:48,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:59:48,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:59:48,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:59:48,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:59:01" (1/3) ... [2024-11-14 04:59:48,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4f7d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:59:48, skipping insertion in model container [2024-11-14 04:59:48,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:05" (2/3) ... [2024-11-14 04:59:48,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4f7d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:59:48, skipping insertion in model container [2024-11-14 04:59:48,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:59:48" (3/3) ... [2024-11-14 04:59:48,549 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2024-11-14 04:59:48,572 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:59:48,575 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i that has 86 procedures, 1491 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 04:59:48,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:59:48,736 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=FINITE_AUTOMATA, 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;@492b7d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:59:48,738 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:59:48,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 1490 states, 994 states have (on average 1.4245472837022133) internal successors, (1416), 1055 states have internal predecessors, (1416), 410 states have call successors, (410), 85 states have call predecessors, (410), 84 states have return successors, (405), 389 states have call predecessors, (405), 405 states have call successors, (405) [2024-11-14 04:59:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-14 04:59:48,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:59:48,803 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:59:48,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:59:48,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:59:48,810 INFO L85 PathProgramCache]: Analyzing trace with hash 545066786, now seen corresponding path program 1 times [2024-11-14 04:59:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:59:48,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504408322] [2024-11-14 04:59:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:48,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:59:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2024-11-14 04:59:55,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:59:55,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504408322] [2024-11-14 04:59:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504408322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:59:55,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:59:55,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:59:55,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963624720] [2024-11-14 04:59:55,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:59:55,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:59:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:59:55,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:59:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:59:55,071 INFO L87 Difference]: Start difference. First operand has 1490 states, 994 states have (on average 1.4245472837022133) internal successors, (1416), 1055 states have internal predecessors, (1416), 410 states have call successors, (410), 85 states have call predecessors, (410), 84 states have return successors, (405), 389 states have call predecessors, (405), 405 states have call successors, (405) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-14 04:59:57,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:59:59,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:01,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:00:04,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:07,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:12,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:00:14,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:00:17,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:19,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:22,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:24,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:26,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:00:27,064 INFO L93 Difference]: Finished difference Result 4223 states and 6329 transitions. [2024-11-14 05:00:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:00:27,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 433 [2024-11-14 05:00:27,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:00:27,132 INFO L225 Difference]: With dead ends: 4223 [2024-11-14 05:00:27,133 INFO L226 Difference]: Without dead ends: 2808 [2024-11-14 05:00:27,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:00:27,152 INFO L432 NwaCegarLoop]: 1968 mSDtfsCounter, 2032 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 3 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:00:27,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 3888 Invalid, 520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 505 Invalid, 12 Unknown, 0 Unchecked, 31.6s Time] [2024-11-14 05:00:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2024-11-14 05:00:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2805. [2024-11-14 05:00:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 1898 states have (on average 1.4272918861959958) internal successors, (2709), 1999 states have internal predecessors, (2709), 743 states have call successors, (743), 164 states have call predecessors, (743), 163 states have return successors, (737), 705 states have call predecessors, (737), 737 states have call successors, (737) [2024-11-14 05:00:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4189 transitions. [2024-11-14 05:00:27,603 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4189 transitions. Word has length 433 [2024-11-14 05:00:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:00:27,609 INFO L471 AbstractCegarLoop]: Abstraction has 2805 states and 4189 transitions. [2024-11-14 05:00:27,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-14 05:00:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4189 transitions. [2024-11-14 05:00:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-14 05:00:27,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:00:27,648 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:00:27,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:00:27,649 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:00:27,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:00:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash -662382320, now seen corresponding path program 1 times [2024-11-14 05:00:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:00:27,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769706185] [2024-11-14 05:00:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:00:27,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:00:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:00:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2024-11-14 05:00:32,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:00:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769706185] [2024-11-14 05:00:32,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769706185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:00:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:00:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:00:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881189003] [2024-11-14 05:00:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:00:32,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:00:32,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:00:32,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:00:32,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:00:32,477 INFO L87 Difference]: Start difference. First operand 2805 states and 4189 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2024-11-14 05:00:34,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:36,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:38,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:00:40,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:00:44,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:46,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:50,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:52,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:54,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:56,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:00:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:00:56,363 INFO L93 Difference]: Finished difference Result 5522 states and 8249 transitions. [2024-11-14 05:00:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:00:56,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 448 [2024-11-14 05:00:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:00:56,392 INFO L225 Difference]: With dead ends: 5522 [2024-11-14 05:00:56,392 INFO L226 Difference]: Without dead ends: 2806 [2024-11-14 05:00:56,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:00:56,409 INFO L432 NwaCegarLoop]: 1957 mSDtfsCounter, 0 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:00:56,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3911 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 502 Invalid, 8 Unknown, 0 Unchecked, 23.7s Time] [2024-11-14 05:00:56,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2024-11-14 05:00:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2806. [2024-11-14 05:00:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 1899 states have (on average 1.4270668773038442) internal successors, (2710), 2000 states have internal predecessors, (2710), 743 states have call successors, (743), 164 states have call predecessors, (743), 163 states have return successors, (737), 705 states have call predecessors, (737), 737 states have call successors, (737) [2024-11-14 05:00:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 4190 transitions. [2024-11-14 05:00:56,595 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 4190 transitions. Word has length 448 [2024-11-14 05:00:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:00:56,600 INFO L471 AbstractCegarLoop]: Abstraction has 2806 states and 4190 transitions. [2024-11-14 05:00:56,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2024-11-14 05:00:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 4190 transitions. [2024-11-14 05:00:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-14 05:00:56,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:00:56,620 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:00:56,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:00:56,620 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:00:56,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:00:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash 421091224, now seen corresponding path program 1 times [2024-11-14 05:00:56,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:00:56,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044298856] [2024-11-14 05:00:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:00:56,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:00:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2024-11-14 05:01:00,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:00,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044298856] [2024-11-14 05:01:00,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044298856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:01:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818710211] [2024-11-14 05:01:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:00,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:01:00,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:01:00,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:01:00,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:01:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:06,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 8139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:01:06,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:01:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4208 trivial. 0 not checked. [2024-11-14 05:01:06,264 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:01:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818710211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:06,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:01:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-14 05:01:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444493803] [2024-11-14 05:01:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:06,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:06,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:01:06,268 INFO L87 Difference]: Start difference. First operand 2806 states and 4190 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-14 05:01:08,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:10,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:01:13,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:16,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:17,590 INFO L93 Difference]: Finished difference Result 5522 states and 8247 transitions. [2024-11-14 05:01:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:17,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 449 [2024-11-14 05:01:17,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:17,624 INFO L225 Difference]: With dead ends: 5522 [2024-11-14 05:01:17,624 INFO L226 Difference]: Without dead ends: 2805 [2024-11-14 05:01:17,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:01:17,645 INFO L432 NwaCegarLoop]: 1953 mSDtfsCounter, 2207 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:17,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 1953 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 252 Invalid, 4 Unknown, 0 Unchecked, 11.1s Time] [2024-11-14 05:01:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2024-11-14 05:01:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2805. [2024-11-14 05:01:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 1898 states have (on average 1.4257112750263434) internal successors, (2706), 1999 states have internal predecessors, (2706), 743 states have call successors, (743), 164 states have call predecessors, (743), 163 states have return successors, (737), 705 states have call predecessors, (737), 737 states have call successors, (737) [2024-11-14 05:01:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4186 transitions. [2024-11-14 05:01:17,892 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4186 transitions. Word has length 449 [2024-11-14 05:01:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:17,894 INFO L471 AbstractCegarLoop]: Abstraction has 2805 states and 4186 transitions. [2024-11-14 05:01:17,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-14 05:01:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4186 transitions. [2024-11-14 05:01:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-14 05:01:17,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:17,917 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:01:17,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:01:18,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:01:18,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:18,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2144739725, now seen corresponding path program 1 times [2024-11-14 05:01:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:18,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37722431] [2024-11-14 05:01:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:18,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4209 trivial. 0 not checked. [2024-11-14 05:01:21,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:21,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37722431] [2024-11-14 05:01:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37722431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:21,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:01:21,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:01:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899253752] [2024-11-14 05:01:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:21,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:21,478 INFO L87 Difference]: Start difference. First operand 2805 states and 4186 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-14 05:01:23,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:26,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:28,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:01:30,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:01:33,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:35,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:38,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:41,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:43,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:45,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:47,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:48,020 INFO L93 Difference]: Finished difference Result 5776 states and 8502 transitions. [2024-11-14 05:01:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:48,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 454 [2024-11-14 05:01:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:48,049 INFO L225 Difference]: With dead ends: 5776 [2024-11-14 05:01:48,050 INFO L226 Difference]: Without dead ends: 3060 [2024-11-14 05:01:48,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:48,064 INFO L432 NwaCegarLoop]: 2081 mSDtfsCounter, 1295 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:48,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 3844 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 573 Invalid, 10 Unknown, 0 Unchecked, 26.4s Time] [2024-11-14 05:01:48,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2024-11-14 05:01:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3044. [2024-11-14 05:01:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 2046 states have (on average 1.4134897360703813) internal successors, (2892), 2145 states have internal predecessors, (2892), 770 states have call successors, (770), 228 states have call predecessors, (770), 227 states have return successors, (764), 736 states have call predecessors, (764), 764 states have call successors, (764) [2024-11-14 05:01:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 4426 transitions. [2024-11-14 05:01:48,318 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 4426 transitions. Word has length 454 [2024-11-14 05:01:48,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:48,320 INFO L471 AbstractCegarLoop]: Abstraction has 3044 states and 4426 transitions. [2024-11-14 05:01:48,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-14 05:01:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 4426 transitions. [2024-11-14 05:01:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-14 05:01:48,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:48,335 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:01:48,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:01:48,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:48,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1277746660, now seen corresponding path program 1 times [2024-11-14 05:01:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:48,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720275775] [2024-11-14 05:01:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:48,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4381 trivial. 0 not checked. [2024-11-14 05:01:51,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720275775] [2024-11-14 05:01:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720275775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:01:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394840628] [2024-11-14 05:01:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:51,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:01:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:01:51,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:01:51,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:01:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:56,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 8410 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:01:56,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:01:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4388 trivial. 0 not checked. [2024-11-14 05:01:59,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:01:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394840628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:59,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:01:59,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-14 05:01:59,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176884826] [2024-11-14 05:01:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:59,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:01:59,769 INFO L87 Difference]: Start difference. First operand 3044 states and 4426 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:02:01,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:04,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:07,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:02:10,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:02:10,812 INFO L93 Difference]: Finished difference Result 3046 states and 4427 transitions. [2024-11-14 05:02:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:02:10,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 499 [2024-11-14 05:02:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:02:10,842 INFO L225 Difference]: With dead ends: 3046 [2024-11-14 05:02:10,842 INFO L226 Difference]: Without dead ends: 3043 [2024-11-14 05:02:10,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:02:10,846 INFO L432 NwaCegarLoop]: 1952 mSDtfsCounter, 1997 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:02:10,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 1952 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 4 Unknown, 0 Unchecked, 10.9s Time] [2024-11-14 05:02:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2024-11-14 05:02:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3043. [2024-11-14 05:02:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 2046 states have (on average 1.4130009775171066) internal successors, (2891), 2144 states have internal predecessors, (2891), 769 states have call successors, (769), 228 states have call predecessors, (769), 227 states have return successors, (764), 736 states have call predecessors, (764), 764 states have call successors, (764) [2024-11-14 05:02:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 4424 transitions. [2024-11-14 05:02:11,058 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 4424 transitions. Word has length 499 [2024-11-14 05:02:11,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:02:11,060 INFO L471 AbstractCegarLoop]: Abstraction has 3043 states and 4424 transitions. [2024-11-14 05:02:11,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:02:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 4424 transitions. [2024-11-14 05:02:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-14 05:02:11,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:02:11,075 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:02:11,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:02:11,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:02:11,276 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:02:11,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:02:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash -955968678, now seen corresponding path program 1 times [2024-11-14 05:02:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:02:11,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023111627] [2024-11-14 05:02:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:02:11,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:02:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:02:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4381 trivial. 0 not checked. [2024-11-14 05:02:14,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:02:14,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023111627] [2024-11-14 05:02:14,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023111627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:02:14,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571270828] [2024-11-14 05:02:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:02:14,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:02:14,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:02:14,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:02:14,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:02:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:02:20,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 8412 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:02:20,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:02:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4388 trivial. 0 not checked. [2024-11-14 05:02:23,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:02:23,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571270828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:02:23,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:02:23,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-14 05:02:23,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868071642] [2024-11-14 05:02:23,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:02:23,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:02:23,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:02:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:02:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:02:23,216 INFO L87 Difference]: Start difference. First operand 3043 states and 4424 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:02:25,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:27,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:30,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:02:32,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:34,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:02:35,446 INFO L93 Difference]: Finished difference Result 3045 states and 4425 transitions. [2024-11-14 05:02:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:02:35,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 500 [2024-11-14 05:02:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:02:35,471 INFO L225 Difference]: With dead ends: 3045 [2024-11-14 05:02:35,471 INFO L226 Difference]: Without dead ends: 3042 [2024-11-14 05:02:35,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:02:35,475 INFO L432 NwaCegarLoop]: 1950 mSDtfsCounter, 1994 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:02:35,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 1950 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 5 Unknown, 0 Unchecked, 12.1s Time] [2024-11-14 05:02:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2024-11-14 05:02:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3042. [2024-11-14 05:02:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2046 states have (on average 1.412512218963832) internal successors, (2890), 2143 states have internal predecessors, (2890), 768 states have call successors, (768), 228 states have call predecessors, (768), 227 states have return successors, (764), 736 states have call predecessors, (764), 764 states have call successors, (764) [2024-11-14 05:02:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4422 transitions. [2024-11-14 05:02:35,784 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4422 transitions. Word has length 500 [2024-11-14 05:02:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:02:35,785 INFO L471 AbstractCegarLoop]: Abstraction has 3042 states and 4422 transitions. [2024-11-14 05:02:35,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:02:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4422 transitions. [2024-11-14 05:02:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-14 05:02:35,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:02:35,804 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:02:35,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:02:36,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 05:02:36,006 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:02:36,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:02:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash 429219039, now seen corresponding path program 1 times [2024-11-14 05:02:36,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:02:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036371263] [2024-11-14 05:02:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:02:36,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:02:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:02:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4381 trivial. 0 not checked. [2024-11-14 05:02:39,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:02:39,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036371263] [2024-11-14 05:02:39,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036371263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:02:39,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61333313] [2024-11-14 05:02:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:02:39,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:02:39,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:02:39,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:02:39,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:02:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:02:44,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 8414 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:02:44,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:02:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4388 trivial. 0 not checked. [2024-11-14 05:02:47,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:02:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61333313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:02:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:02:47,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-14 05:02:47,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225021777] [2024-11-14 05:02:47,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:02:47,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:02:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:02:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:02:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:02:47,965 INFO L87 Difference]: Start difference. First operand 3042 states and 4422 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:02:50,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:52,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:55,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:02:56,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:59,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:59,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:02:59,745 INFO L93 Difference]: Finished difference Result 5285 states and 7698 transitions. [2024-11-14 05:02:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:02:59,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 501 [2024-11-14 05:02:59,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:02:59,767 INFO L225 Difference]: With dead ends: 5285 [2024-11-14 05:02:59,767 INFO L226 Difference]: Without dead ends: 3035 [2024-11-14 05:02:59,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:02:59,777 INFO L432 NwaCegarLoop]: 1943 mSDtfsCounter, 1984 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:02:59,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1984 Valid, 1943 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 4 Unknown, 0 Unchecked, 11.6s Time] [2024-11-14 05:02:59,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2024-11-14 05:02:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 3035. [2024-11-14 05:02:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2043 states have (on average 1.412139011257954) internal successors, (2885), 2139 states have internal predecessors, (2885), 766 states have call successors, (766), 227 states have call predecessors, (766), 225 states have return successors, (762), 734 states have call predecessors, (762), 762 states have call successors, (762) [2024-11-14 05:02:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4413 transitions. [2024-11-14 05:02:59,976 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4413 transitions. Word has length 501 [2024-11-14 05:02:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:02:59,978 INFO L471 AbstractCegarLoop]: Abstraction has 3035 states and 4413 transitions. [2024-11-14 05:02:59,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:02:59,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4413 transitions. [2024-11-14 05:02:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-14 05:02:59,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:02:59,989 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:00,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:03:00,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 05:03:00,190 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:00,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:00,191 INFO L85 PathProgramCache]: Analyzing trace with hash 420370173, now seen corresponding path program 1 times [2024-11-14 05:03:00,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:00,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620393148] [2024-11-14 05:03:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:00,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4381 trivial. 0 not checked. [2024-11-14 05:03:02,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620393148] [2024-11-14 05:03:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620393148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326227765] [2024-11-14 05:03:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:02,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:02,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:02,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:03,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:03:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:08,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 8416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:03:08,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4388 trivial. 0 not checked. [2024-11-14 05:03:11,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:03:11,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326227765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:11,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:03:11,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-14 05:03:11,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958599229] [2024-11-14 05:03:11,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:11,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:03:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:11,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:03:11,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:03:11,354 INFO L87 Difference]: Start difference. First operand 3035 states and 4413 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:03:13,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:03:15,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:03:19,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:03:20,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:03:22,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:03:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:23,184 INFO L93 Difference]: Finished difference Result 3037 states and 4414 transitions. [2024-11-14 05:03:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:03:23,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 502 [2024-11-14 05:03:23,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:23,206 INFO L225 Difference]: With dead ends: 3037 [2024-11-14 05:03:23,206 INFO L226 Difference]: Without dead ends: 3034 [2024-11-14 05:03:23,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:03:23,209 INFO L432 NwaCegarLoop]: 1942 mSDtfsCounter, 1981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:23,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 1942 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 248 Invalid, 4 Unknown, 0 Unchecked, 11.7s Time] [2024-11-14 05:03:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2024-11-14 05:03:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 3034. [2024-11-14 05:03:23,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 2043 states have (on average 1.4116495349975526) internal successors, (2884), 2138 states have internal predecessors, (2884), 765 states have call successors, (765), 227 states have call predecessors, (765), 225 states have return successors, (762), 734 states have call predecessors, (762), 762 states have call successors, (762) [2024-11-14 05:03:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4411 transitions. [2024-11-14 05:03:23,433 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4411 transitions. Word has length 502 [2024-11-14 05:03:23,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:23,435 INFO L471 AbstractCegarLoop]: Abstraction has 3034 states and 4411 transitions. [2024-11-14 05:03:23,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:03:23,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4411 transitions. [2024-11-14 05:03:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-14 05:03:23,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:23,448 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:23,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:03:23,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 05:03:23,649 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:23,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash 146060194, now seen corresponding path program 1 times [2024-11-14 05:03:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386076770] [2024-11-14 05:03:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4381 trivial. 0 not checked. [2024-11-14 05:03:26,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:26,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386076770] [2024-11-14 05:03:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386076770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:26,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378205910] [2024-11-14 05:03:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:26,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:26,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:26,582 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:26,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:03:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:31,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 8418 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:03:31,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4388 trivial. 0 not checked. [2024-11-14 05:03:34,840 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:03:34,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378205910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:34,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:03:34,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-14 05:03:34,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785951704] [2024-11-14 05:03:34,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:34,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:03:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:34,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:03:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:03:34,843 INFO L87 Difference]: Start difference. First operand 3034 states and 4411 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:03:36,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:03:39,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:03:42,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:03:44,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:03:46,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:03:47,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:47,253 INFO L93 Difference]: Finished difference Result 3036 states and 4412 transitions. [2024-11-14 05:03:47,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:03:47,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 503 [2024-11-14 05:03:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:47,275 INFO L225 Difference]: With dead ends: 3036 [2024-11-14 05:03:47,275 INFO L226 Difference]: Without dead ends: 2968 [2024-11-14 05:03:47,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:03:47,281 INFO L432 NwaCegarLoop]: 1941 mSDtfsCounter, 1978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:47,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1978 Valid, 1941 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 5 Unknown, 0 Unchecked, 12.2s Time] [2024-11-14 05:03:47,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2024-11-14 05:03:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2968. [2024-11-14 05:03:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2000 states have (on average 1.4135) internal successors, (2827), 2093 states have internal predecessors, (2827), 747 states have call successors, (747), 222 states have call predecessors, (747), 220 states have return successors, (745), 718 states have call predecessors, (745), 745 states have call successors, (745) [2024-11-14 05:03:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 4319 transitions. [2024-11-14 05:03:47,548 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 4319 transitions. Word has length 503 [2024-11-14 05:03:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:47,549 INFO L471 AbstractCegarLoop]: Abstraction has 2968 states and 4319 transitions. [2024-11-14 05:03:47,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-14 05:03:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 4319 transitions. [2024-11-14 05:03:47,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2024-11-14 05:03:47,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:47,571 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:47,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 05:03:47,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:47,772 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:47,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash 784812985, now seen corresponding path program 1 times [2024-11-14 05:03:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625076483] [2024-11-14 05:03:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:47,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4382 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2024-11-14 05:03:50,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:50,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625076483] [2024-11-14 05:03:50,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625076483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:50,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171861941] [2024-11-14 05:03:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:50,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:50,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:50,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:50,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dd48a2-5e3e-4f79-8812-58f316409dc7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:03:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:55,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 8624 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:03:55,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4382 backedges. 162 proven. 1 refuted. 0 times theorem prover too weak. 4219 trivial. 0 not checked. [2024-11-14 05:03:55,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:03:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4382 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2024-11-14 05:03:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171861941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:03:57,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [60093908] [2024-11-14 05:03:57,889 INFO L159 IcfgInterpreter]: Started Sifa with 195 locations of interest [2024-11-14 05:03:57,889 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:03:57,894 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:03:57,901 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:03:57,902 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:06:03,787 WARN L286 SmtUtils]: Spent 9.91s on a formula simplification that was a NOOP. DAG size: 6109 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:07:26,446 WARN L286 SmtUtils]: Spent 9.89s on a formula simplification that was a NOOP. DAG size: 6109 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:08:44,219 WARN L286 SmtUtils]: Spent 8.81s on a formula simplification that was a NOOP. DAG size: 6109 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:09:57,798 WARN L286 SmtUtils]: Spent 8.80s on a formula simplification that was a NOOP. DAG size: 6109 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:10:58,798 WARN L286 SmtUtils]: Spent 17.81s on a formula simplification that was a NOOP. DAG size: 7912 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 05:11:16,719 WARN L286 SmtUtils]: Spent 17.91s on a formula simplification that was a NOOP. DAG size: 7912 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 05:11:43,754 WARN L286 SmtUtils]: Spent 26.99s on a formula simplification. DAG size of input: 7947 DAG size of output: 7879 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 05:12:01,773 WARN L286 SmtUtils]: Spent 18.01s on a formula simplification that was a NOOP. DAG size: 7912 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 05:12:19,822 WARN L286 SmtUtils]: Spent 18.04s on a formula simplification that was a NOOP. DAG size: 7912 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 05:12:46,819 WARN L286 SmtUtils]: Spent 26.95s on a formula simplification. DAG size of input: 7947 DAG size of output: 7879 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)