./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91 --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 7325716246446e6137919cda7fc42ef01fc613ff512d250d81e88f25c6debe0a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:19:04,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:19:04,713 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:19:04,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:19:04,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:19:04,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:19:04,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:19:04,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:19:04,767 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:19:04,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:19:04,774 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:19:04,774 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:19:04,774 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:19:04,776 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:19:04,777 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:19:04,777 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:19:04,777 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:19:04,778 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:19:04,778 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:19:04,779 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:19:04,779 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:19:04,780 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:19:04,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:19:04,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:19:04,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:19:04,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:19:04,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:19:04,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:19:04,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:19:04,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:19:04,785 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:19:04,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:19:04,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:19:04,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:19:04,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:19:04,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:19:04,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:19:04,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:19:04,787 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:19:04,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:19:04,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:19:04,788 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:19:04,788 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:19:04,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:19:04,789 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_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7325716246446e6137919cda7fc42ef01fc613ff512d250d81e88f25c6debe0a [2023-11-24 23:19:05,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:19:05,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:19:05,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:19:05,198 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:19:05,198 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:19:05,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2023-11-24 23:19:08,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:19:08,760 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:19:08,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2023-11-24 23:19:08,788 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/data/60b6f9fbd/8a56ad1812c64d15bb9eb28ffb788029/FLAG5a4248539 [2023-11-24 23:19:08,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/data/60b6f9fbd/8a56ad1812c64d15bb9eb28ffb788029 [2023-11-24 23:19:08,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:19:08,812 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:19:08,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:19:08,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:19:08,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:19:08,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:19:08" (1/1) ... [2023-11-24 23:19:08,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359bed7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:08, skipping insertion in model container [2023-11-24 23:19:08,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:19:08" (1/1) ... [2023-11-24 23:19:08,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:19:09,807 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_b6c29f0f-62b1-4945-b790-a0683bee03ea/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2023-11-24 23:19:09,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:19:09,895 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:19:10,135 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_b6c29f0f-62b1-4945-b790-a0683bee03ea/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2023-11-24 23:19:10,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:19:10,227 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:19:10,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10 WrapperNode [2023-11-24 23:19:10,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:19:10,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:19:10,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:19:10,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:19:10,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,375 INFO L138 Inliner]: procedures = 77, calls = 266, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 823 [2023-11-24 23:19:10,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:19:10,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:19:10,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:19:10,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:19:10,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:19:10,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:19:10,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:19:10,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:19:10,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (1/1) ... [2023-11-24 23:19:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:19:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:10,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:19:10,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c29f0f-62b1-4945-b790-a0683bee03ea/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:19:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_init [2023-11-24 23:19:10,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_init [2023-11-24 23:19:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:19:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-24 23:19:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-24 23:19:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:19:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-24 23:19:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-24 23:19:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_exit [2023-11-24 23:19:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_exit [2023-11-24 23:19:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-24 23:19:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-24 23:19:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:19:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:19:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-24 23:19:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-24 23:19:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:19:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:19:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-24 23:19:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-24 23:19:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:19:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-24 23:19:10,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-24 23:19:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:19:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-24 23:19:10,603 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-24 23:19:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:19:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:19:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:19:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-24 23:19:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-24 23:19:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-24 23:19:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-24 23:19:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-24 23:19:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-24 23:19:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-24 23:19:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-24 23:19:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:19:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:19:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:19:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:19:10,909 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:19:10,913 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:19:11,211 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-24 23:19:11,299 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 23:19:12,205 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2023-11-24 23:19:12,205 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2023-11-24 23:19:12,221 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:19:12,645 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:19:12,645 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-24 23:19:12,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:19:12 BoogieIcfgContainer [2023-11-24 23:19:12,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:19:12,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:19:12,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:19:12,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:19:12,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:19:08" (1/3) ... [2023-11-24 23:19:12,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437fbfb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:19:12, skipping insertion in model container [2023-11-24 23:19:12,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:10" (2/3) ... [2023-11-24 23:19:12,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437fbfb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:19:12, skipping insertion in model container [2023-11-24 23:19:12,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:19:12" (3/3) ... [2023-11-24 23:19:12,661 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2023-11-24 23:19:12,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:19:12,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:19:12,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:19:12,835 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;@54b5d90e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:19:12,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:19:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 85 states have internal predecessors, (106), 30 states have call successors, (30), 15 states have call predecessors, (30), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-24 23:19:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:19:12,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:12,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:12,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:12,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1001973851, now seen corresponding path program 1 times [2023-11-24 23:19:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625830864] [2023-11-24 23:19:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:19:14,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625830864] [2023-11-24 23:19:14,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625830864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:14,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:14,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:14,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831206308] [2023-11-24 23:19:14,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:14,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:14,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:14,755 INFO L87 Difference]: Start difference. First operand has 123 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 85 states have internal predecessors, (106), 30 states have call successors, (30), 15 states have call predecessors, (30), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:19:17,324 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 [] [2023-11-24 23:19:18,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:19,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:19,025 INFO L93 Difference]: Finished difference Result 318 states and 434 transitions. [2023-11-24 23:19:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-24 23:19:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:19,038 INFO L225 Difference]: With dead ends: 318 [2023-11-24 23:19:19,038 INFO L226 Difference]: Without dead ends: 199 [2023-11-24 23:19:19,056 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 [2023-11-24 23:19:19,059 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 116 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:19,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 232 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-11-24 23:19:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-24 23:19:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 194. [2023-11-24 23:19:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 127 states have (on average 1.2598425196850394) internal successors, (160), 132 states have internal predecessors, (160), 43 states have call successors, (43), 24 states have call predecessors, (43), 23 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-24 23:19:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 242 transitions. [2023-11-24 23:19:19,150 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 242 transitions. Word has length 12 [2023-11-24 23:19:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:19,151 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 242 transitions. [2023-11-24 23:19:19,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:19:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 242 transitions. [2023-11-24 23:19:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:19:19,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:19,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:19:19,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:19,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash 996294858, now seen corresponding path program 1 times [2023-11-24 23:19:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:19,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789533] [2023-11-24 23:19:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:19:20,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:20,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789533] [2023-11-24 23:19:20,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:20,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:20,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:20,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061368689] [2023-11-24 23:19:20,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:20,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:20,262 INFO L87 Difference]: Start difference. First operand 194 states and 242 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:19:21,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:23,823 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 [] [2023-11-24 23:19:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:23,853 INFO L93 Difference]: Finished difference Result 453 states and 563 transitions. [2023-11-24 23:19:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:23,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-24 23:19:23,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:23,860 INFO L225 Difference]: With dead ends: 453 [2023-11-24 23:19:23,860 INFO L226 Difference]: Without dead ends: 265 [2023-11-24 23:19:23,863 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 [2023-11-24 23:19:23,865 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 97 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:23,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 225 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 23:19:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-24 23:19:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2023-11-24 23:19:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 170 states have (on average 1.2411764705882353) internal successors, (211), 175 states have internal predecessors, (211), 56 states have call successors, (56), 33 states have call predecessors, (56), 32 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-24 23:19:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 319 transitions. [2023-11-24 23:19:23,914 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 319 transitions. Word has length 13 [2023-11-24 23:19:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:23,915 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 319 transitions. [2023-11-24 23:19:23,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:19:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 319 transitions. [2023-11-24 23:19:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:19:23,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:23,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:23,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:19:23,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:23,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:23,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1422597334, now seen corresponding path program 1 times [2023-11-24 23:19:23,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:23,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194440252] [2023-11-24 23:19:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:23,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:19:24,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194440252] [2023-11-24 23:19:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194440252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259660578] [2023-11-24 23:19:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:24,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:24,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:24,965 INFO L87 Difference]: Start difference. First operand 259 states and 319 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 23:19:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:26,223 INFO L93 Difference]: Finished difference Result 530 states and 666 transitions. [2023-11-24 23:19:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-11-24 23:19:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:26,227 INFO L225 Difference]: With dead ends: 530 [2023-11-24 23:19:26,227 INFO L226 Difference]: Without dead ends: 282 [2023-11-24 23:19:26,228 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 [2023-11-24 23:19:26,230 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 39 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:26,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 190 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:19:26,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-24 23:19:26,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-11-24 23:19:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 193 states have (on average 1.2538860103626943) internal successors, (242), 198 states have internal predecessors, (242), 56 states have call successors, (56), 33 states have call predecessors, (56), 32 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-24 23:19:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 350 transitions. [2023-11-24 23:19:26,299 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 350 transitions. Word has length 38 [2023-11-24 23:19:26,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:26,300 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 350 transitions. [2023-11-24 23:19:26,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 23:19:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 350 transitions. [2023-11-24 23:19:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-24 23:19:26,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:26,306 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-24 23:19:26,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:19:26,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:26,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -932600488, now seen corresponding path program 1 times [2023-11-24 23:19:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:26,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779516779] [2023-11-24 23:19:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:19:28,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:28,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779516779] [2023-11-24 23:19:28,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779516779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:28,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:28,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:19:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804405643] [2023-11-24 23:19:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:28,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:19:28,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:19:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:19:28,009 INFO L87 Difference]: Start difference. First operand 282 states and 350 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:19:30,960 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 [] [2023-11-24 23:19:32,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:34,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:36,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:38,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:38,124 INFO L93 Difference]: Finished difference Result 556 states and 691 transitions. [2023-11-24 23:19:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:19:38,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-24 23:19:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:38,129 INFO L225 Difference]: With dead ends: 556 [2023-11-24 23:19:38,129 INFO L226 Difference]: Without dead ends: 282 [2023-11-24 23:19:38,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:19:38,132 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:38,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 587 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2023-11-24 23:19:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-24 23:19:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-11-24 23:19:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 193 states have (on average 1.2487046632124352) internal successors, (241), 198 states have internal predecessors, (241), 56 states have call successors, (56), 33 states have call predecessors, (56), 32 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-24 23:19:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 349 transitions. [2023-11-24 23:19:38,166 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 349 transitions. Word has length 56 [2023-11-24 23:19:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:38,167 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 349 transitions. [2023-11-24 23:19:38,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:19:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 349 transitions. [2023-11-24 23:19:38,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-24 23:19:38,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:38,171 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-24 23:19:38,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:19:38,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:38,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1229353319, now seen corresponding path program 1 times [2023-11-24 23:19:38,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:38,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113094897] [2023-11-24 23:19:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:38,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:19:40,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:40,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113094897] [2023-11-24 23:19:40,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113094897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:40,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:40,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:19:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652253605] [2023-11-24 23:19:40,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:40,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:19:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:19:40,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:19:40,362 INFO L87 Difference]: Start difference. First operand 282 states and 349 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:19:44,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:46,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:48,380 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 [] [2023-11-24 23:19:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:48,402 INFO L93 Difference]: Finished difference Result 538 states and 684 transitions. [2023-11-24 23:19:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:19:48,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2023-11-24 23:19:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:48,407 INFO L225 Difference]: With dead ends: 538 [2023-11-24 23:19:48,407 INFO L226 Difference]: Without dead ends: 333 [2023-11-24 23:19:48,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:19:48,410 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 171 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:48,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 365 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 181 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2023-11-24 23:19:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-24 23:19:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 208. [2023-11-24 23:19:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 140 states have (on average 1.2357142857142858) internal successors, (173), 144 states have internal predecessors, (173), 43 states have call successors, (43), 25 states have call predecessors, (43), 24 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-24 23:19:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 255 transitions. [2023-11-24 23:19:48,436 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 255 transitions. Word has length 60 [2023-11-24 23:19:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:48,437 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 255 transitions. [2023-11-24 23:19:48,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:19:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 255 transitions. [2023-11-24 23:19:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-24 23:19:48,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:48,440 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-24 23:19:48,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:19:48,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:48,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1264503498, now seen corresponding path program 1 times [2023-11-24 23:19:48,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:48,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256355046] [2023-11-24 23:19:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:48,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 23:19:50,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:50,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256355046] [2023-11-24 23:19:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256355046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 23:19:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026684548] [2023-11-24 23:19:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:50,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:19:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:50,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:19:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:19:50,840 INFO L87 Difference]: Start difference. First operand 208 states and 255 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:19:54,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:56,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:20:00,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:20:01,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []