./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.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_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh --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 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:20:13,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:20:13,741 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 14:20:13,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:20:13,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:20:13,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:20:13,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:20:13,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:20:13,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:20:13,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:20:13,774 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:20:13,774 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:20:13,775 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:20:13,775 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:20:13,776 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:20:13,776 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:20:13,777 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:20:13,777 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:20:13,778 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:20:13,778 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:20:13,779 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:20:13,780 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:20:13,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:20:13,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:20:13,781 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:20:13,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:20:13,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:20:13,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:20:13,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:20:13,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:20:13,784 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:20:13,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:20:13,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:20:13,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:20:13,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:20:13,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:20:13,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:20:13,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:20:13,786 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:20:13,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:20:13,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:20:13,787 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:20:13,787 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:20:13,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:20:13,787 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_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2023-12-02 14:20:14,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:20:14,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:20:14,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:20:14,052 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:20:14,052 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:20:14,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-12-02 14:20:16,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:20:17,225 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:20:17,225 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-12-02 14:20:17,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/data/60355a7ee/99bc32ddc2d3462b9646bacdcdb49ff3/FLAG82160654d [2023-12-02 14:20:17,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/data/60355a7ee/99bc32ddc2d3462b9646bacdcdb49ff3 [2023-12-02 14:20:17,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:20:17,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:20:17,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:20:17,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:20:17,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:20:17,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:17" (1/1) ... [2023-12-02 14:20:17,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b120c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:17, skipping insertion in model container [2023-12-02 14:20:17,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:17" (1/1) ... [2023-12-02 14:20:17,407 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:20:18,546 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_86bd4b56-4f89-4e45-95c0-8671196d8e3b/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-12-02 14:20:18,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:20:18,663 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:20:18,746 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3740] [2023-12-02 14:20:18,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("mov" "b " "%%" "gs" ":" "%P" "1" ",%0": "=q" (pfo_ret__): "p" (& current_task)); [3785-3792] [2023-12-02 14:20:18,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("mov" "w " "%%" "gs" ":" "%P" "1" ",%0": "=r" (pfo_ret__): "p" (& current_task)); [3795-3802] [2023-12-02 14:20:18,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("mov" "l " "%%" "gs" ":" "%P" "1" ",%0": "=r" (pfo_ret__): "p" (& current_task)); [3805-3812] [2023-12-02 14:20:18,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("mov" "q " "%%" "gs" ":" "%P" "1" ",%0": "=r" (pfo_ret__): "p" (& current_task)); [3815-3822] [2023-12-02 14:20:18,907 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_86bd4b56-4f89-4e45-95c0-8671196d8e3b/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-12-02 14:20:18,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:20:18,994 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:20:18,999 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:20:19,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19 WrapperNode [2023-12-02 14:20:19,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:20:19,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:20:19,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:20:19,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:20:19,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,179 INFO L138 Inliner]: procedures = 167, calls = 1492, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 4906 [2023-12-02 14:20:19,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:20:19,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:20:19,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:20:19,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:20:19,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:20:19,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:20:19,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:20:19,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:20:19,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (1/1) ... [2023-12-02 14:20:19,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:20:19,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:20:19,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:20:19,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:20:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-12-02 14:20:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-12-02 14:20:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_exit [2023-12-02 14:20:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_exit [2023-12-02 14:20:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 14:20:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-12-02 14:20:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-12-02 14:20:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 14:20:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 14:20:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-12-02 14:20:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-12-02 14:20:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:20:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-12-02 14:20:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-12-02 14:20:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 14:20:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 14:20:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_writememory [2023-12-02 14:20:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_writememory [2023-12-02 14:20:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 14:20:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 14:20:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 14:20:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 14:20:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure firm_send_command [2023-12-02 14:20:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_send_command [2023-12-02 14:20:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 14:20:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 14:20:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 14:20:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 14:20:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-12-02 14:20:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-12-02 14:20:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:20:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 14:20:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 14:20:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-12-02 14:20:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-12-02 14:20:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-12-02 14:20:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-12-02 14:20:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-12-02 14:20:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-12-02 14:20:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-12-02 14:20:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-12-02 14:20:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2023-12-02 14:20:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2023-12-02 14:20:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-12-02 14:20:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-12-02 14:20:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_attach [2023-12-02 14:20:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_attach [2023-12-02 14:20:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:20:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-12-02 14:20:19,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-12-02 14:20:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 14:20:19,438 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 14:20:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-12-02 14:20:19,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-12-02 14:20:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:20:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:20:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:20:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 14:20:19,439 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 14:20:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 14:20:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2023-12-02 14:20:19,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2023-12-02 14:20:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-12-02 14:20:19,439 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-12-02 14:20:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_set_reset [2023-12-02 14:20:19,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_set_reset [2023-12-02 14:20:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure urb_to_wrap [2023-12-02 14:20:19,440 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_to_wrap [2023-12-02 14:20:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:20:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 14:20:19,440 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 14:20:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure firm_setup_port [2023-12-02 14:20:19,440 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_setup_port [2023-12-02 14:20:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 14:20:19,440 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 14:20:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-12-02 14:20:19,441 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-12-02 14:20:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure list_first [2023-12-02 14:20:19,441 INFO L138 BoogieDeclarations]: Found implementation of procedure list_first [2023-12-02 14:20:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-12-02 14:20:19,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-12-02 14:20:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:20:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 14:20:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 14:20:19,441 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 14:20:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 14:20:19,441 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 14:20:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure firm_close [2023-12-02 14:20:19,442 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_close [2023-12-02 14:20:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 14:20:19,442 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 14:20:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2023-12-02 14:20:19,442 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2023-12-02 14:20:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-12-02 14:20:19,442 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-12-02 14:20:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-12-02 14:20:19,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-12-02 14:20:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 14:20:19,443 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 14:20:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure stop_command_port [2023-12-02 14:20:19,443 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_command_port [2023-12-02 14:20:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-12-02 14:20:19,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-12-02 14:20:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 14:20:19,443 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 14:20:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 14:20:19,443 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 14:20:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 14:20:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 14:20:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-12-02 14:20:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-12-02 14:20:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 14:20:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 14:20:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-12-02 14:20:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-12-02 14:20:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:20:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-12-02 14:20:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-12-02 14:20:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-12-02 14:20:19,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-12-02 14:20:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 14:20:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:20:19,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:20:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_init [2023-12-02 14:20:19,445 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_init [2023-12-02 14:20:19,975 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:20:19,978 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:20:20,250 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 14:20:20,496 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2023-12-02 14:20:20,496 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2023-12-02 14:20:20,511 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 14:20:20,633 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2023-12-02 14:20:20,633 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2023-12-02 14:20:20,815 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-12-02 14:20:21,202 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 14:20:21,217 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 14:20:22,958 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##395: assume !false; [2023-12-02 14:20:22,958 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##394: assume false; [2023-12-02 14:20:22,958 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !false; [2023-12-02 14:20:22,958 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume false; [2023-12-02 14:20:23,082 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:20:24,170 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:20:24,170 INFO L309 CfgBuilder]: Removed 94 assume(true) statements. [2023-12-02 14:20:24,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:20:24 BoogieIcfgContainer [2023-12-02 14:20:24,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:20:24,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:20:24,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:20:24,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:20:24,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:20:17" (1/3) ... [2023-12-02 14:20:24,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b494c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:20:24, skipping insertion in model container [2023-12-02 14:20:24,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:19" (2/3) ... [2023-12-02 14:20:24,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b494c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:20:24, skipping insertion in model container [2023-12-02 14:20:24,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:20:24" (3/3) ... [2023-12-02 14:20:24,181 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-12-02 14:20:24,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:20:24,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:20:24,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:20:24,278 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;@63deb3f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:20:24,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:20:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 1007 states, 632 states have (on average 1.3908227848101267) internal successors, (879), 655 states have internal predecessors, (879), 320 states have call successors, (320), 54 states have call predecessors, (320), 53 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) [2023-12-02 14:20:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 14:20:24,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:24,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:24,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:24,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash -314016749, now seen corresponding path program 1 times [2023-12-02 14:20:24,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:24,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122825435] [2023-12-02 14:20:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:24,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:20:27,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:27,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122825435] [2023-12-02 14:20:27,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122825435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:27,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:27,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:20:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040735518] [2023-12-02 14:20:27,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:27,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:20:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:27,121 INFO L87 Difference]: Start difference. First operand has 1007 states, 632 states have (on average 1.3908227848101267) internal successors, (879), 655 states have internal predecessors, (879), 320 states have call successors, (320), 54 states have call predecessors, (320), 53 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:20:29,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:29,594 INFO L93 Difference]: Finished difference Result 2927 states and 4480 transitions. [2023-12-02 14:20:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:29,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-02 14:20:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:29,625 INFO L225 Difference]: With dead ends: 2927 [2023-12-02 14:20:29,625 INFO L226 Difference]: Without dead ends: 1935 [2023-12-02 14:20:29,635 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 [2023-12-02 14:20:29,638 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 1348 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:29,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 2483 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 14:20:29,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2023-12-02 14:20:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1931. [2023-12-02 14:20:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1218 states have (on average 1.2430213464696223) internal successors, (1514), 1250 states have internal predecessors, (1514), 612 states have call successors, (612), 102 states have call predecessors, (612), 100 states have return successors, (611), 601 states have call predecessors, (611), 609 states have call successors, (611) [2023-12-02 14:20:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2737 transitions. [2023-12-02 14:20:29,825 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2737 transitions. Word has length 17 [2023-12-02 14:20:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:29,826 INFO L495 AbstractCegarLoop]: Abstraction has 1931 states and 2737 transitions. [2023-12-02 14:20:29,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:20:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2737 transitions. [2023-12-02 14:20:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 14:20:29,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:29,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:29,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:20:29,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:29,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1145179533, now seen corresponding path program 1 times [2023-12-02 14:20:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:29,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789920734] [2023-12-02 14:20:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:29,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:20:32,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:32,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789920734] [2023-12-02 14:20:32,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789920734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:32,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:32,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:20:32,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335289551] [2023-12-02 14:20:32,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:32,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:32,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:20:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:32,241 INFO L87 Difference]: Start difference. First operand 1931 states and 2737 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:20:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:33,713 INFO L93 Difference]: Finished difference Result 1933 states and 2738 transitions. [2023-12-02 14:20:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:33,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-02 14:20:33,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:33,732 INFO L225 Difference]: With dead ends: 1933 [2023-12-02 14:20:33,732 INFO L226 Difference]: Without dead ends: 1921 [2023-12-02 14:20:33,734 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 [2023-12-02 14:20:33,735 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 1411 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:33,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1411 Valid, 1250 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 14:20:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2023-12-02 14:20:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1921. [2023-12-02 14:20:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1213 states have (on average 1.2399010717230008) internal successors, (1504), 1243 states have internal predecessors, (1504), 608 states have call successors, (608), 101 states have call predecessors, (608), 99 states have return successors, (608), 598 states have call predecessors, (608), 606 states have call successors, (608) [2023-12-02 14:20:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2720 transitions. [2023-12-02 14:20:33,920 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2720 transitions. Word has length 18 [2023-12-02 14:20:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:33,920 INFO L495 AbstractCegarLoop]: Abstraction has 1921 states and 2720 transitions. [2023-12-02 14:20:33,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:20:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2720 transitions. [2023-12-02 14:20:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 14:20:33,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:33,933 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:33,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:20:33,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:33,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:33,934 INFO L85 PathProgramCache]: Analyzing trace with hash 342403367, now seen corresponding path program 1 times [2023-12-02 14:20:33,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:33,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548464893] [2023-12-02 14:20:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:33,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 14:20:36,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548464893] [2023-12-02 14:20:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548464893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:36,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:36,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:20:36,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270707682] [2023-12-02 14:20:36,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:36,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:36,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:20:36,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:36,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:36,512 INFO L87 Difference]: Start difference. First operand 1921 states and 2720 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 14:20:38,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:38,496 INFO L93 Difference]: Finished difference Result 4553 states and 6541 transitions. [2023-12-02 14:20:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:38,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 81 [2023-12-02 14:20:38,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:38,522 INFO L225 Difference]: With dead ends: 4553 [2023-12-02 14:20:38,523 INFO L226 Difference]: Without dead ends: 2654 [2023-12-02 14:20:38,534 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 [2023-12-02 14:20:38,535 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 374 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:38,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 2523 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 14:20:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2023-12-02 14:20:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2650. [2023-12-02 14:20:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 1688 states have (on average 1.2505924170616114) internal successors, (2111), 1732 states have internal predecessors, (2111), 862 states have call successors, (862), 101 states have call predecessors, (862), 99 states have return successors, (863), 846 states have call predecessors, (863), 860 states have call successors, (863) [2023-12-02 14:20:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3836 transitions. [2023-12-02 14:20:38,785 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3836 transitions. Word has length 81 [2023-12-02 14:20:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:38,786 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3836 transitions. [2023-12-02 14:20:38,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 14:20:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3836 transitions. [2023-12-02 14:20:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 14:20:38,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:38,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:38,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:20:38,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:38,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1060641176, now seen corresponding path program 1 times [2023-12-02 14:20:38,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:38,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998351077] [2023-12-02 14:20:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 14:20:41,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998351077] [2023-12-02 14:20:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998351077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:41,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:41,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:20:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580158969] [2023-12-02 14:20:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:41,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:20:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:20:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:20:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:20:41,251 INFO L87 Difference]: Start difference. First operand 2650 states and 3836 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 14:20:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:43,502 INFO L93 Difference]: Finished difference Result 5293 states and 7667 transitions. [2023-12-02 14:20:43,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:20:43,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 113 [2023-12-02 14:20:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:43,520 INFO L225 Difference]: With dead ends: 5293 [2023-12-02 14:20:43,520 INFO L226 Difference]: Without dead ends: 2666 [2023-12-02 14:20:43,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:20:43,531 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 58 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3653 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:43,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 3653 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 14:20:43,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2023-12-02 14:20:43,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2656. [2023-12-02 14:20:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 1692 states have (on average 1.25) internal successors, (2115), 1736 states have internal predecessors, (2115), 864 states have call successors, (864), 101 states have call predecessors, (864), 99 states have return successors, (865), 848 states have call predecessors, (865), 862 states have call successors, (865) [2023-12-02 14:20:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3844 transitions. [2023-12-02 14:20:43,655 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3844 transitions. Word has length 113 [2023-12-02 14:20:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:43,656 INFO L495 AbstractCegarLoop]: Abstraction has 2656 states and 3844 transitions. [2023-12-02 14:20:43,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 14:20:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3844 transitions. [2023-12-02 14:20:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 14:20:43,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:43,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:43,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:20:43,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:43,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash -285546191, now seen corresponding path program 1 times [2023-12-02 14:20:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:43,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993239064] [2023-12-02 14:20:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:43,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 14:20:46,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:46,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993239064] [2023-12-02 14:20:46,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993239064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:46,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:20:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543292286] [2023-12-02 14:20:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:20:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:20:46,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:20:46,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:20:46,327 INFO L87 Difference]: Start difference. First operand 2656 states and 3844 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:20:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:48,956 INFO L93 Difference]: Finished difference Result 3861 states and 5594 transitions. [2023-12-02 14:20:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:20:48,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 118 [2023-12-02 14:20:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:48,966 INFO L225 Difference]: With dead ends: 3861 [2023-12-02 14:20:48,967 INFO L226 Difference]: Without dead ends: 1228 [2023-12-02 14:20:48,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:20:49,000 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 9 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4063 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:49,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4063 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 14:20:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2023-12-02 14:20:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1219. [2023-12-02 14:20:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 783 states have (on average 1.251596424010217) internal successors, (980), 801 states have internal predecessors, (980), 390 states have call successors, (390), 46 states have call predecessors, (390), 45 states have return successors, (389), 383 states have call predecessors, (389), 389 states have call successors, (389) [2023-12-02 14:20:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1759 transitions. [2023-12-02 14:20:49,081 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1759 transitions. Word has length 118 [2023-12-02 14:20:49,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:49,082 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1759 transitions. [2023-12-02 14:20:49,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 14:20:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1759 transitions. [2023-12-02 14:20:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 14:20:49,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:49,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:49,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:20:49,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:49,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1558908957, now seen corresponding path program 1 times [2023-12-02 14:20:49,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:49,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871801608] [2023-12-02 14:20:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 14:20:51,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871801608] [2023-12-02 14:20:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871801608] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:20:51,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616512893] [2023-12-02 14:20:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:51,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:20:51,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:20:51,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:20:51,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd4b56-4f89-4e45-95c0-8671196d8e3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:20:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:54,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 3153 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:20:54,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:20:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 14:20:54,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:20:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 14:20:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616512893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:20:54,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1610424151] [2023-12-02 14:20:54,999 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2023-12-02 14:20:54,999 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:20:55,003 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:20:55,009 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:20:55,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:22:16,869 INFO L197 IcfgInterpreter]: Interpreting procedure whiteheat_init with input of size 2556 for LOIs [2023-12-02 14:24:12,205 INFO L197 IcfgInterpreter]: Interpreting procedure usb_serial_register with input of size 2560 for LOIs [2023-12-02 14:24:22,122 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:27:09,430 WARN L293 SmtUtils]: Spent 2.78m on a formula simplification that was a NOOP. DAG size: 2556 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:29:57,320 WARN L293 SmtUtils]: Spent 2.79m on a formula simplification that was a NOOP. DAG size: 2560 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:33:25,582 WARN L293 SmtUtils]: Spent 3.46m on a formula simplification that was a NOOP. DAG size: 2570 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)