./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:30:59,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:30:59,870 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-06 20:30:59,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:30:59,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:30:59,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:30:59,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:30:59,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:30:59,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:30:59,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:30:59,908 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:30:59,909 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:30:59,909 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:30:59,910 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:30:59,910 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:30:59,911 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:30:59,911 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:30:59,912 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:30:59,912 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:30:59,913 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:30:59,913 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:30:59,914 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:30:59,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:30:59,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:30:59,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:30:59,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:30:59,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:30:59,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:30:59,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:30:59,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:30:59,918 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:30:59,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:30:59,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:30:59,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:30:59,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:30:59,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:30:59,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:30:59,920 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:30:59,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:30:59,920 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:30:59,921 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:30:59,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:30:59,921 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_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 [2023-11-06 20:31:00,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:31:00,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:31:00,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:31:00,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:31:00,179 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:31:00,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2023-11-06 20:31:03,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:31:03,819 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:31:03,821 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2023-11-06 20:31:03,872 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/data/425f6b801/a33be68f04414dceb194f79f94cc5763/FLAGae34829b9 [2023-11-06 20:31:03,893 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/data/425f6b801/a33be68f04414dceb194f79f94cc5763 [2023-11-06 20:31:03,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:31:03,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:31:03,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:03,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:31:03,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:31:03,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:03" (1/1) ... [2023-11-06 20:31:03,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70afe755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:03, skipping insertion in model container [2023-11-06 20:31:03,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:03" (1/1) ... [2023-11-06 20:31:04,024 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:04,864 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_395900df-1bae-4293-86d1-22a5db343bba/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2023-11-06 20:31:04,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:04,973 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:31:05,264 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_395900df-1bae-4293-86d1-22a5db343bba/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2023-11-06 20:31:05,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:05,319 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:31:05,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05 WrapperNode [2023-11-06 20:31:05,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:05,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:05,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:31:05,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:31:05,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,462 INFO L138 Inliner]: procedures = 81, calls = 541, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 1873 [2023-11-06 20:31:05,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:05,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:31:05,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:31:05,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:31:05,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:31:05,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:31:05,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:31:05,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:31:05,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (1/1) ... [2023-11-06 20:31:05,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:31:05,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:31:05,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_395900df-1bae-4293-86d1-22a5db343bba/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:31:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:31:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2023-11-06 20:31:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2023-11-06 20:31:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:31:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2023-11-06 20:31:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2023-11-06 20:31:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:31:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:31:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-06 20:31:05,714 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-06 20:31:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-06 20:31:05,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-06 20:31:05,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 20:31:05,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 20:31:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-06 20:31:05,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-06 20:31:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:31:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 20:31:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-06 20:31:05,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-06 20:31:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 20:31:05,717 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 20:31:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-06 20:31:05,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-06 20:31:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:31:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-06 20:31:05,718 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-06 20:31:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-06 20:31:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-06 20:31:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-06 20:31:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-06 20:31:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2023-11-06 20:31:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2023-11-06 20:31:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-06 20:31:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-06 20:31:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-11-06 20:31:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-11-06 20:31:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:31:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:31:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:31:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:31:06,123 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:31:06,125 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:31:06,245 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-06 20:31:06,256 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:31:06,313 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-11-06 20:31:06,313 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-11-06 20:31:06,398 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:31:06,403 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:31:06,452 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:31:08,177 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##324: assume false; [2023-11-06 20:31:08,177 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume !false; [2023-11-06 20:31:08,177 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##73: assume false; [2023-11-06 20:31:08,177 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2023-11-06 20:31:08,178 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2023-11-06 20:31:08,178 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##325: assume !false; [2023-11-06 20:31:08,190 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:31:08,943 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:31:08,944 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-06 20:31:08,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:31:08 BoogieIcfgContainer [2023-11-06 20:31:08,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:31:08,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:31:08,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:31:08,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:31:08,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:31:03" (1/3) ... [2023-11-06 20:31:08,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ab6356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:31:08, skipping insertion in model container [2023-11-06 20:31:08,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:05" (2/3) ... [2023-11-06 20:31:08,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ab6356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:31:08, skipping insertion in model container [2023-11-06 20:31:08,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:31:08" (3/3) ... [2023-11-06 20:31:08,957 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2023-11-06 20:31:08,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:31:08,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:31:09,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:31:09,044 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=LoopsAndPotentialCycles, 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;@7c50c93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:31:09,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 20:31:09,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 142 states have (on average 1.4929577464788732) internal successors, (212), 152 states have internal predecessors, (212), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 20:31:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:31:09,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:09,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:09,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:31:09,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:09,066 INFO L85 PathProgramCache]: Analyzing trace with hash 907869214, now seen corresponding path program 1 times [2023-11-06 20:31:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:09,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684179595] [2023-11-06 20:31:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:12,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684179595] [2023-11-06 20:31:12,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684179595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:12,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:12,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:31:12,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659233442] [2023-11-06 20:31:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:12,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:31:12,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:12,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:31:12,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:31:12,547 INFO L87 Difference]: Start difference. First operand has 204 states, 142 states have (on average 1.4929577464788732) internal successors, (212), 152 states have internal predecessors, (212), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) 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) [2023-11-06 20:31:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:13,212 INFO L93 Difference]: Finished difference Result 550 states and 824 transitions. [2023-11-06 20:31:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:31:13,215 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 [2023-11-06 20:31:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:13,259 INFO L225 Difference]: With dead ends: 550 [2023-11-06 20:31:13,259 INFO L226 Difference]: Without dead ends: 355 [2023-11-06 20:31:13,264 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 [2023-11-06 20:31:13,268 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 229 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:13,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 426 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 20:31:13,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-06 20:31:13,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 352. [2023-11-06 20:31:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 251 states have (on average 1.3386454183266931) internal successors, (336), 259 states have internal predecessors, (336), 76 states have call successors, (76), 25 states have call predecessors, (76), 24 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-06 20:31:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2023-11-06 20:31:13,363 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 485 transitions. Word has length 13 [2023-11-06 20:31:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:13,364 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 485 transitions. [2023-11-06 20:31:13,364 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) [2023-11-06 20:31:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 485 transitions. [2023-11-06 20:31:13,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:31:13,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:13,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:31:13,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:31:13,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1920976060, now seen corresponding path program 1 times [2023-11-06 20:31:13,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:13,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475736491] [2023-11-06 20:31:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:13,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:15,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:15,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475736491] [2023-11-06 20:31:15,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475736491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:15,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:15,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:31:15,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917094984] [2023-11-06 20:31:15,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:15,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:31:15,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:31:15,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:31:15,500 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-06 20:31:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:16,000 INFO L93 Difference]: Finished difference Result 354 states and 486 transitions. [2023-11-06 20:31:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:31:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 14 [2023-11-06 20:31:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:16,005 INFO L225 Difference]: With dead ends: 354 [2023-11-06 20:31:16,006 INFO L226 Difference]: Without dead ends: 343 [2023-11-06 20:31:16,006 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 [2023-11-06 20:31:16,008 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 266 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:16,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 219 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 20:31:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-06 20:31:16,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-06 20:31:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 246 states have (on average 1.329268292682927) internal successors, (327), 252 states have internal predecessors, (327), 73 states have call successors, (73), 24 states have call predecessors, (73), 23 states have return successors, (71), 69 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-06 20:31:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 471 transitions. [2023-11-06 20:31:16,054 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 471 transitions. Word has length 14 [2023-11-06 20:31:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:16,055 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 471 transitions. [2023-11-06 20:31:16,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-06 20:31:16,055 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 471 transitions. [2023-11-06 20:31:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 20:31:16,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:16,068 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:16,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:31:16,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:31:16,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash -515760615, now seen corresponding path program 1 times [2023-11-06 20:31:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:16,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933022719] [2023-11-06 20:31:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:31:19,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933022719] [2023-11-06 20:31:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933022719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:19,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:19,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:31:19,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476108969] [2023-11-06 20:31:19,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:19,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:31:19,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:19,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:31:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:19,077 INFO L87 Difference]: Start difference. First operand 343 states and 471 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 20:31:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:20,087 INFO L93 Difference]: Finished difference Result 518 states and 714 transitions. [2023-11-06 20:31:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:31:20,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2023-11-06 20:31:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:20,093 INFO L225 Difference]: With dead ends: 518 [2023-11-06 20:31:20,093 INFO L226 Difference]: Without dead ends: 506 [2023-11-06 20:31:20,094 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 [2023-11-06 20:31:20,095 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 374 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:20,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 579 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 20:31:20,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-06 20:31:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 493. [2023-11-06 20:31:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 357 states have (on average 1.330532212885154) internal successors, (475), 363 states have internal predecessors, (475), 103 states have call successors, (103), 33 states have call predecessors, (103), 32 states have return successors, (101), 99 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-06 20:31:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 679 transitions. [2023-11-06 20:31:20,147 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 679 transitions. Word has length 54 [2023-11-06 20:31:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:20,147 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 679 transitions. [2023-11-06 20:31:20,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 20:31:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 679 transitions. [2023-11-06 20:31:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 20:31:20,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:20,153 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:31:20,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:31:20,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2009462673, now seen corresponding path program 1 times [2023-11-06 20:31:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295560027] [2023-11-06 20:31:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:20,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:31:22,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:22,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295560027] [2023-11-06 20:31:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295560027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:22,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:22,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:31:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459235294] [2023-11-06 20:31:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:22,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:31:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:31:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:22,471 INFO L87 Difference]: Start difference. First operand 493 states and 679 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 20:31:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:23,645 INFO L93 Difference]: Finished difference Result 1320 states and 1819 transitions. [2023-11-06 20:31:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:31:23,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2023-11-06 20:31:23,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:23,657 INFO L225 Difference]: With dead ends: 1320 [2023-11-06 20:31:23,657 INFO L226 Difference]: Without dead ends: 977 [2023-11-06 20:31:23,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 20:31:23,661 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 284 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:23,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 815 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 20:31:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-11-06 20:31:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 952. [2023-11-06 20:31:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 692 states have (on average 1.3381502890173411) internal successors, (926), 708 states have internal predecessors, (926), 196 states have call successors, (196), 61 states have call predecessors, (196), 63 states have return successors, (197), 187 states have call predecessors, (197), 194 states have call successors, (197) [2023-11-06 20:31:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1319 transitions. [2023-11-06 20:31:23,817 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1319 transitions. Word has length 56 [2023-11-06 20:31:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:23,818 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1319 transitions. [2023-11-06 20:31:23,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 20:31:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1319 transitions. [2023-11-06 20:31:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 20:31:23,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:23,827 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:23,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:31:23,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:31:23,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash -528378125, now seen corresponding path program 1 times [2023-11-06 20:31:23,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:23,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554244603] [2023-11-06 20:31:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:23,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:31:26,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:26,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554244603] [2023-11-06 20:31:26,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554244603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:26,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:26,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 20:31:26,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226471952] [2023-11-06 20:31:26,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:26,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 20:31:26,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 20:31:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:31:26,740 INFO L87 Difference]: Start difference. First operand 952 states and 1319 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 20:31:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:28,625 INFO L93 Difference]: Finished difference Result 2520 states and 3489 transitions. [2023-11-06 20:31:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:31:28,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2023-11-06 20:31:28,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:28,644 INFO L225 Difference]: With dead ends: 2520 [2023-11-06 20:31:28,644 INFO L226 Difference]: Without dead ends: 1815 [2023-11-06 20:31:28,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 20:31:28,653 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 444 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:28,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 580 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 20:31:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2023-11-06 20:31:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1802. [2023-11-06 20:31:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1329 states have (on average 1.3333333333333333) internal successors, (1772), 1352 states have internal predecessors, (1772), 359 states have call successors, (359), 111 states have call predecessors, (359), 113 states have return successors, (360), 345 states have call predecessors, (360), 357 states have call successors, (360) [2023-11-06 20:31:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2491 transitions. [2023-11-06 20:31:28,864 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2491 transitions. Word has length 56 [2023-11-06 20:31:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:28,866 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2491 transitions. [2023-11-06 20:31:28,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 20:31:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2491 transitions. [2023-11-06 20:31:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 20:31:28,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:28,872 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:28,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:31:28,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:31:28,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2128187919, now seen corresponding path program 1 times [2023-11-06 20:31:28,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874856643] [2023-11-06 20:31:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:28,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat