./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ --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 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:10:22,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:10:22,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:10:22,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:10:22,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:10:22,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:10:22,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:10:22,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:10:22,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:10:22,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:10:22,637 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:10:22,637 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:10:22,638 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:10:22,639 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:10:22,639 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:10:22,640 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:10:22,640 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:10:22,641 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:10:22,642 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:10:22,642 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:10:22,643 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:10:22,650 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:10:22,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:10:22,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:10:22,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:10:22,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:10:22,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:10:22,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:10:22,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:10:22,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:10:22,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:10:22,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:10:22,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:10:22,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:22,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:10:22,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:10:22,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:10:22,658 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:10:22,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:10:22,658 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:10:22,659 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:10:22,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:10:22,659 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2023-11-19 04:10:22,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:10:22,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:10:23,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:10:23,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:10:23,004 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:10:23,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-19 04:10:26,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:10:26,832 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:10:26,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-19 04:10:26,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/data/e383f2bd8/9ba12c221e4e47bfa5e0cb5583df164b/FLAGc708966cb [2023-11-19 04:10:26,897 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/data/e383f2bd8/9ba12c221e4e47bfa5e0cb5583df164b [2023-11-19 04:10:26,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:10:26,906 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:10:26,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:26,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:10:26,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:10:26,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:26" (1/1) ... [2023-11-19 04:10:26,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4bd6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:26, skipping insertion in model container [2023-11-19 04:10:26,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:26" (1/1) ... [2023-11-19 04:10:27,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:10:28,415 WARN L240 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_4179e3c2-c801-479a-b729-30c375a7db49/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2023-11-19 04:10:28,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:28,648 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:10:28,777 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3881-3882] [2023-11-19 04:10:28,946 WARN L240 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_4179e3c2-c801-479a-b729-30c375a7db49/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2023-11-19 04:10:28,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:29,162 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:10:29,170 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:10:29,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29 WrapperNode [2023-11-19 04:10:29,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:29,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:10:29,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:10:29,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:10:29,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,425 INFO L138 Inliner]: procedures = 196, calls = 1051, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2643 [2023-11-19 04:10:29,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:10:29,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:10:29,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:10:29,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:10:29,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:10:29,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:10:29,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:10:29,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:10:29,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (1/1) ... [2023-11-19 04:10:29,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:29,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:29,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:10:29,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4179e3c2-c801-479a-b729-30c375a7db49/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:10:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:10:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2023-11-19 04:10:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2023-11-19 04:10:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-11-19 04:10:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-11-19 04:10:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:10:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:10:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2023-11-19 04:10:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2023-11-19 04:10:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2023-11-19 04:10:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2023-11-19 04:10:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 04:10:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 04:10:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:10:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:10:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 04:10:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 04:10:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2023-11-19 04:10:29,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2023-11-19 04:10:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:10:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 04:10:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:10:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2023-11-19 04:10:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2023-11-19 04:10:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:10:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-19 04:10:29,771 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-19 04:10:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2023-11-19 04:10:29,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2023-11-19 04:10:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:10:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:10:29,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:10:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 04:10:29,772 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 04:10:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2023-11-19 04:10:29,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2023-11-19 04:10:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2023-11-19 04:10:29,774 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2023-11-19 04:10:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-19 04:10:29,774 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-19 04:10:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2023-11-19 04:10:29,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2023-11-19 04:10:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 04:10:29,775 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 04:10:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:10:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2023-11-19 04:10:29,775 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2023-11-19 04:10:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:10:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2023-11-19 04:10:29,776 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2023-11-19 04:10:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2023-11-19 04:10:29,776 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2023-11-19 04:10:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2023-11-19 04:10:29,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2023-11-19 04:10:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2023-11-19 04:10:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2023-11-19 04:10:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 04:10:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 04:10:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2023-11-19 04:10:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2023-11-19 04:10:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:10:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:10:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2023-11-19 04:10:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2023-11-19 04:10:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:10:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-11-19 04:10:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2023-11-19 04:10:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2023-11-19 04:10:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2023-11-19 04:10:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2023-11-19 04:10:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2023-11-19 04:10:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:10:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2023-11-19 04:10:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2023-11-19 04:10:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2023-11-19 04:10:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2023-11-19 04:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2023-11-19 04:10:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2023-11-19 04:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2023-11-19 04:10:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2023-11-19 04:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:10:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 04:10:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 04:10:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2023-11-19 04:10:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2023-11-19 04:10:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2023-11-19 04:10:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2023-11-19 04:10:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2023-11-19 04:10:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2023-11-19 04:10:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2023-11-19 04:10:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2023-11-19 04:10:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:10:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:10:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:10:30,250 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:10:30,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:10:44,450 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:10:46,150 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:10:46,150 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:10:46,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:46 BoogieIcfgContainer [2023-11-19 04:10:46,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:10:46,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:10:46,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:10:46,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:10:46,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:10:26" (1/3) ... [2023-11-19 04:10:46,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd5b013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:46, skipping insertion in model container [2023-11-19 04:10:46,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:29" (2/3) ... [2023-11-19 04:10:46,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd5b013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:46, skipping insertion in model container [2023-11-19 04:10:46,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:46" (3/3) ... [2023-11-19 04:10:46,178 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-19 04:10:46,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:10:46,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:10:46,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:10:46,292 INFO L357 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, mHoare=true, 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;@78d8cca0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:10:46,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:10:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 497 states, 329 states have (on average 1.4620060790273557) internal successors, (481), 348 states have internal predecessors, (481), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2023-11-19 04:10:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 04:10:46,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:46,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:46,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:46,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1140806136, now seen corresponding path program 1 times [2023-11-19 04:10:46,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:46,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797372317] [2023-11-19 04:10:46,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:46,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:47,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:47,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797372317] [2023-11-19 04:10:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797372317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:47,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:47,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:10:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602523669] [2023-11-19 04:10:47,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:47,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:47,725 INFO L87 Difference]: Start difference. First operand has 497 states, 329 states have (on average 1.4620060790273557) internal successors, (481), 348 states have internal predecessors, (481), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:49,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:10:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:50,753 INFO L93 Difference]: Finished difference Result 1473 states and 2183 transitions. [2023-11-19 04:10:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:50,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-19 04:10:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:50,784 INFO L225 Difference]: With dead ends: 1473 [2023-11-19 04:10:50,784 INFO L226 Difference]: Without dead ends: 975 [2023-11-19 04:10:50,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:50,799 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 689 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:50,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1248 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 04:10:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-11-19 04:10:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 971. [2023-11-19 04:10:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 647 states have (on average 1.4513137557959814) internal successors, (939), 675 states have internal predecessors, (939), 245 states have call successors, (245), 79 states have call predecessors, (245), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-19 04:10:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1422 transitions. [2023-11-19 04:10:50,998 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1422 transitions. Word has length 18 [2023-11-19 04:10:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:51,005 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1422 transitions. [2023-11-19 04:10:51,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1422 transitions. [2023-11-19 04:10:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:10:51,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:51,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:51,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:10:51,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:51,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1810786739, now seen corresponding path program 1 times [2023-11-19 04:10:51,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:51,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924721796] [2023-11-19 04:10:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:51,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:51,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924721796] [2023-11-19 04:10:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924721796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:51,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:51,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:10:51,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448603532] [2023-11-19 04:10:51,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:51,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:51,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:51,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:51,902 INFO L87 Difference]: Start difference. First operand 971 states and 1422 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:53,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:10:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:54,554 INFO L93 Difference]: Finished difference Result 973 states and 1423 transitions. [2023-11-19 04:10:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:54,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 04:10:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:54,566 INFO L225 Difference]: With dead ends: 973 [2023-11-19 04:10:54,566 INFO L226 Difference]: Without dead ends: 970 [2023-11-19 04:10:54,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:54,570 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 704 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:54,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 623 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 04:10:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-19 04:10:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2023-11-19 04:10:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 647 states have (on average 1.4497681607418855) internal successors, (938), 674 states have internal predecessors, (938), 244 states have call successors, (244), 79 states have call predecessors, (244), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-19 04:10:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1420 transitions. [2023-11-19 04:10:54,662 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1420 transitions. Word has length 20 [2023-11-19 04:10:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:54,665 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1420 transitions. [2023-11-19 04:10:54,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1420 transitions. [2023-11-19 04:10:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:10:54,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:54,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:54,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:10:54,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:54,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash -300085533, now seen corresponding path program 1 times [2023-11-19 04:10:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:54,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117958904] [2023-11-19 04:10:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:54,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:55,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:55,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117958904] [2023-11-19 04:10:55,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117958904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:55,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:55,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:10:55,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991981875] [2023-11-19 04:10:55,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:55,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:55,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:55,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:55,488 INFO L87 Difference]: Start difference. First operand 970 states and 1420 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:57,532 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 [] [2023-11-19 04:10:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:57,957 INFO L93 Difference]: Finished difference Result 972 states and 1421 transitions. [2023-11-19 04:10:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 04:10:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:57,967 INFO L225 Difference]: With dead ends: 972 [2023-11-19 04:10:57,967 INFO L226 Difference]: Without dead ends: 969 [2023-11-19 04:10:57,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:57,972 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 701 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:57,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 621 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 04:10:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-11-19 04:10:58,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2023-11-19 04:10:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 647 states have (on average 1.4482225656877898) internal successors, (937), 673 states have internal predecessors, (937), 243 states have call successors, (243), 79 states have call predecessors, (243), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-19 04:10:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1418 transitions. [2023-11-19 04:10:58,050 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1418 transitions. Word has length 21 [2023-11-19 04:10:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:58,050 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1418 transitions. [2023-11-19 04:10:58,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1418 transitions. [2023-11-19 04:10:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 04:10:58,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:58,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:58,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:10:58,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:58,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash -712983536, now seen corresponding path program 1 times [2023-11-19 04:10:58,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:58,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335642351] [2023-11-19 04:10:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:58,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:58,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335642351] [2023-11-19 04:10:58,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335642351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:58,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:58,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:10:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601560850] [2023-11-19 04:10:58,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:58,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:58,889 INFO L87 Difference]: Start difference. First operand 969 states and 1418 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:00,933 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 [] [2023-11-19 04:11:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:01,325 INFO L93 Difference]: Finished difference Result 971 states and 1419 transitions. [2023-11-19 04:11:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:01,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-19 04:11:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:01,334 INFO L225 Difference]: With dead ends: 971 [2023-11-19 04:11:01,334 INFO L226 Difference]: Without dead ends: 968 [2023-11-19 04:11:01,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:01,336 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 698 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:01,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 619 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 04:11:01,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-19 04:11:01,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2023-11-19 04:11:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 647 states have (on average 1.446676970633694) internal successors, (936), 672 states have internal predecessors, (936), 242 states have call successors, (242), 79 states have call predecessors, (242), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-19 04:11:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1416 transitions. [2023-11-19 04:11:01,456 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1416 transitions. Word has length 22 [2023-11-19 04:11:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:01,456 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1416 transitions. [2023-11-19 04:11:01,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1416 transitions. [2023-11-19 04:11:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:11:01,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:01,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:11:01,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:11:01,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:01,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash -627914874, now seen corresponding path program 1 times [2023-11-19 04:11:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:01,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086167285] [2023-11-19 04:11:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:02,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086167285] [2023-11-19 04:11:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086167285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:02,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:02,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:11:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382114155] [2023-11-19 04:11:02,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:02,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:02,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:02,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:02,137 INFO L87 Difference]: Start difference. First operand 968 states and 1416 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:04,176 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 [] [2023-11-19 04:11:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:04,582 INFO L93 Difference]: Finished difference Result 970 states and 1417 transitions. [2023-11-19 04:11:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:04,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 04:11:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:04,590 INFO L225 Difference]: With dead ends: 970 [2023-11-19 04:11:04,591 INFO L226 Difference]: Without dead ends: 967 [2023-11-19 04:11:04,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:04,593 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 695 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:04,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 617 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 04:11:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-19 04:11:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2023-11-19 04:11:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 647 states have (on average 1.4451313755795983) internal successors, (935), 671 states have internal predecessors, (935), 241 states have call successors, (241), 79 states have call predecessors, (241), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-19 04:11:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1414 transitions. [2023-11-19 04:11:04,669 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1414 transitions. Word has length 23 [2023-11-19 04:11:04,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:04,670 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1414 transitions. [2023-11-19 04:11:04,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1414 transitions. [2023-11-19 04:11:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 04:11:04,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:04,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:11:04,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:11:04,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:04,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2009218515, now seen corresponding path program 1 times [2023-11-19 04:11:04,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:04,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134499979] [2023-11-19 04:11:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:04,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:05,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134499979] [2023-11-19 04:11:05,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134499979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:05,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:05,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:11:05,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169020628] [2023-11-19 04:11:05,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:05,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:05,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:05,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:05,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:05,307 INFO L87 Difference]: Start difference. First operand 967 states and 1414 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:07,345 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 [] [2023-11-19 04:11:07,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:07,958 INFO L93 Difference]: Finished difference Result 2425 states and 3494 transitions. [2023-11-19 04:11:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:07,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 04:11:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:07,969 INFO L225 Difference]: With dead ends: 2425 [2023-11-19 04:11:07,969 INFO L226 Difference]: Without dead ends: 1453 [2023-11-19 04:11:07,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:07,975 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 665 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:07,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 917 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 04:11:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2023-11-19 04:11:08,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1447. [2023-11-19 04:11:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 940 states have (on average 1.3936170212765957) internal successors, (1310), 972 states have internal predecessors, (1310), 368 states have call successors, (368), 139 states have call predecessors, (368), 138 states have return successors, (372), 359 states have call predecessors, (372), 366 states have call successors, (372) [2023-11-19 04:11:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2050 transitions. [2023-11-19 04:11:08,102 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2050 transitions. Word has length 24 [2023-11-19 04:11:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:08,102 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 2050 transitions. [2023-11-19 04:11:08,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:08,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2050 transitions. [2023-11-19 04:11:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-19 04:11:08,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:08,112 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-19 04:11:08,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:11:08,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:08,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash 615801339, now seen corresponding path program 1 times [2023-11-19 04:11:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:08,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963484822] [2023-11-19 04:11:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:08,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-19 04:11:09,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:09,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963484822] [2023-11-19 04:11:09,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963484822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:09,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:09,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:11:09,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764887066] [2023-11-19 04:11:09,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:09,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:09,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:09,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:09,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:09,077 INFO L87 Difference]: Start difference. First operand 1447 states and 2050 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 04:11:11,117 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 [] [2023-11-19 04:11:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:11,884 INFO L93 Difference]: Finished difference Result 2598 states and 3707 transitions. [2023-11-19 04:11:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:11,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2023-11-19 04:11:11,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:11,896 INFO L225 Difference]: With dead ends: 2598 [2023-11-19 04:11:11,896 INFO L226 Difference]: Without dead ends: 1152 [2023-11-19 04:11:11,903 INFO L412 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 [2023-11-19 04:11:11,904 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 305 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:11,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1209 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 04:11:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-11-19 04:11:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2023-11-19 04:11:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 773 states have (on average 1.445019404915912) internal successors, (1117), 791 states have internal predecessors, (1117), 269 states have call successors, (269), 110 states have call predecessors, (269), 109 states have return successors, (270), 264 states have call predecessors, (270), 267 states have call successors, (270) [2023-11-19 04:11:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1656 transitions. [2023-11-19 04:11:12,000 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1656 transitions. Word has length 160 [2023-11-19 04:11:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:12,001 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1656 transitions. [2023-11-19 04:11:12,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 04:11:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1656 transitions. [2023-11-19 04:11:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 04:11:12,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:12,009 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:11:12,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:11:12,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:12,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1791538521, now seen corresponding path program 1 times [2023-11-19 04:11:12,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:12,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340249164] [2023-11-19 04:11:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:12,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-19 04:11:13,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:13,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340249164] [2023-11-19 04:11:13,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340249164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:13,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:13,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:11:13,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874059999] [2023-11-19 04:11:13,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:13,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:11:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:13,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:11:13,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:11:13,415 INFO L87 Difference]: Start difference. First operand 1152 states and 1656 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 04:11:15,461 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 []