./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 527bcce2 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_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/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_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5 --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 0.2.3-dev-527bcce [2023-11-21 19:04:27,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:04:28,029 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:04:28,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:04:28,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:04:28,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:04:28,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:04:28,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:04:28,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:04:28,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:04:28,085 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:04:28,086 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:04:28,087 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:04:28,087 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:04:28,088 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:04:28,088 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:04:28,095 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:04:28,101 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:04:28,101 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:04:28,104 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:04:28,105 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:04:28,106 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:04:28,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:04:28,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:04:28,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:04:28,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:04:28,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:04:28,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:04:28,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:04:28,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:04:28,112 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:04:28,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:04:28,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:04:28,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:04:28,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:04:28,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:04:28,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:04:28,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:04:28,115 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:04:28,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:04:28,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:04:28,116 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:04:28,116 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:04:28,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:04:28,117 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_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2023-11-21 19:04:28,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:04:28,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:04:28,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:04:28,499 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:04:28,500 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:04:28,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-21 19:04:31,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:04:32,458 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:04:32,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-21 19:04:32,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/data/7c5c40d41/1366c1f5e7e44e34aeb1cbd71164b0cf/FLAG33c56802d [2023-11-21 19:04:32,526 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/data/7c5c40d41/1366c1f5e7e44e34aeb1cbd71164b0cf [2023-11-21 19:04:32,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:04:32,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:04:32,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:04:32,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:04:32,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:04:32,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:04:32" (1/1) ... [2023-11-21 19:04:32,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0d654e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:32, skipping insertion in model container [2023-11-21 19:04:32,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:04:32" (1/1) ... [2023-11-21 19:04:32,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:04:34,387 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_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-11-21 19:04:34,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:04:34,515 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:04:34,633 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3740] [2023-11-21 19:04:34,639 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] [2023-11-21 19:04:34,639 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] [2023-11-21 19:04:34,640 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] [2023-11-21 19:04:34,640 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] [2023-11-21 19:04:34,984 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_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-11-21 19:04:35,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:04:35,106 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:35,115 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:04:35,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35 WrapperNode [2023-11-21 19:04:35,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:04:35,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:04:35,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:04:35,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:04:35,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,436 INFO L138 Inliner]: procedures = 167, calls = 1492, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 4762 [2023-11-21 19:04:35,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:04:35,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:04:35,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:04:35,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:04:35,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:04:35,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:04:35,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:04:35,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:04:35,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (1/1) ... [2023-11-21 19:04:35,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:04:35,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:35,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:04:35,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:04:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-21 19:04:35,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-21 19:04:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_exit [2023-11-21 19:04:35,792 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_exit [2023-11-21 19:04:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:04:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-21 19:04:35,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-21 19:04:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 19:04:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:04:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-21 19:04:35,794 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-21 19:04:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:04:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-21 19:04:35,795 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-21 19:04:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-21 19:04:35,795 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-21 19:04:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_writememory [2023-11-21 19:04:35,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_writememory [2023-11-21 19:04:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-21 19:04:35,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-21 19:04:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 19:04:35,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 19:04:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure firm_send_command [2023-11-21 19:04:35,799 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_send_command [2023-11-21 19:04:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-21 19:04:35,800 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-21 19:04:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 19:04:35,800 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 19:04:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-21 19:04:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-21 19:04:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:04:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-21 19:04:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-21 19:04:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-21 19:04:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-21 19:04:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-21 19:04:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-21 19:04:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-21 19:04:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-21 19:04:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-21 19:04:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-21 19:04:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2023-11-21 19:04:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2023-11-21 19:04:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-11-21 19:04:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-11-21 19:04:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_attach [2023-11-21 19:04:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_attach [2023-11-21 19:04:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:04:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-21 19:04:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-21 19:04:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 19:04:35,806 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 19:04:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-21 19:04:35,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-21 19:04:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:04:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:04:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:04:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-21 19:04:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-21 19:04:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-21 19:04:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2023-11-21 19:04:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2023-11-21 19:04:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-21 19:04:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-21 19:04:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_set_reset [2023-11-21 19:04:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_set_reset [2023-11-21 19:04:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure urb_to_wrap [2023-11-21 19:04:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_to_wrap [2023-11-21 19:04:35,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:04:35,811 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-21 19:04:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-21 19:04:35,811 INFO L130 BoogieDeclarations]: Found specification of procedure firm_setup_port [2023-11-21 19:04:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_setup_port [2023-11-21 19:04:35,812 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 19:04:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 19:04:35,812 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-21 19:04:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-21 19:04:35,812 INFO L130 BoogieDeclarations]: Found specification of procedure list_first [2023-11-21 19:04:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure list_first [2023-11-21 19:04:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-21 19:04:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-21 19:04:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:04:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:04:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 19:04:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 19:04:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 19:04:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 19:04:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure firm_close [2023-11-21 19:04:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_close [2023-11-21 19:04:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-21 19:04:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-21 19:04:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2023-11-21 19:04:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2023-11-21 19:04:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-21 19:04:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-21 19:04:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-21 19:04:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-21 19:04:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-21 19:04:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-21 19:04:35,817 INFO L130 BoogieDeclarations]: Found specification of procedure stop_command_port [2023-11-21 19:04:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_command_port [2023-11-21 19:04:35,817 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-21 19:04:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-21 19:04:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-21 19:04:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-21 19:04:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-21 19:04:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-21 19:04:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-21 19:04:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-21 19:04:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-21 19:04:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-21 19:04:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-21 19:04:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-21 19:04:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-11-21 19:04:35,821 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-11-21 19:04:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:04:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-21 19:04:35,821 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-21 19:04:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-21 19:04:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-21 19:04:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 19:04:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:04:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:04:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_init [2023-11-21 19:04:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_init [2023-11-21 19:04:36,401 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:04:36,404 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:04:36,916 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 19:04:37,172 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2023-11-21 19:04:37,173 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2023-11-21 19:04:37,187 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 19:04:37,320 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2023-11-21 19:04:37,320 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2023-11-21 19:04:37,405 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-21 19:04:37,895 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 19:04:37,909 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 19:04:40,422 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##395: assume !false; [2023-11-21 19:04:40,422 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##394: assume false; [2023-11-21 19:04:40,423 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !false; [2023-11-21 19:04:40,423 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume false; [2023-11-21 19:04:40,554 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:04:41,858 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:04:41,858 INFO L308 CfgBuilder]: Removed 94 assume(true) statements. [2023-11-21 19:04:41,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:04:41 BoogieIcfgContainer [2023-11-21 19:04:41,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:04:41,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:04:41,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:04:41,869 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:04:41,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:04:32" (1/3) ... [2023-11-21 19:04:41,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fec4270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:04:41, skipping insertion in model container [2023-11-21 19:04:41,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:35" (2/3) ... [2023-11-21 19:04:41,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fec4270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:04:41, skipping insertion in model container [2023-11-21 19:04:41,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:04:41" (3/3) ... [2023-11-21 19:04:41,879 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-21 19:04:41,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:04:41,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:04:42,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:04:42,015 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;@56931afa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:04:42,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:04:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 1003 states, 628 states have (on average 1.393312101910828) internal successors, (875), 653 states have internal predecessors, (875), 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) [2023-11-21 19:04:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 19:04:42,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:42,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:42,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:04:42,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:42,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1852417872, now seen corresponding path program 1 times [2023-11-21 19:04:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442716583] [2023-11-21 19:04:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:46,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:46,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442716583] [2023-11-21 19:04:46,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442716583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:46,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:04:46,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:04:46,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049382894] [2023-11-21 19:04:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:46,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:46,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:46,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:04:46,355 INFO L87 Difference]: Start difference. First operand has 1003 states, 628 states have (on average 1.393312101910828) internal successors, (875), 653 states have internal predecessors, (875), 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) [2023-11-21 19:04:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:48,481 INFO L93 Difference]: Finished difference Result 2915 states and 4468 transitions. [2023-11-21 19:04:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:48,485 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 [2023-11-21 19:04:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:48,525 INFO L225 Difference]: With dead ends: 2915 [2023-11-21 19:04:48,526 INFO L226 Difference]: Without dead ends: 1927 [2023-11-21 19:04:48,608 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 [2023-11-21 19:04:48,612 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 1344 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:48,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2479 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 19:04:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2023-11-21 19:04:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1923. [2023-11-21 19:04:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1210 states have (on average 1.2446280991735537) internal successors, (1506), 1242 states have internal predecessors, (1506), 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) [2023-11-21 19:04:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2729 transitions. [2023-11-21 19:04:48,833 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2729 transitions. Word has length 17 [2023-11-21 19:04:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:48,834 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2729 transitions. [2023-11-21 19:04:48,834 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) [2023-11-21 19:04:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2729 transitions. [2023-11-21 19:04:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:04:48,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:48,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:48,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:04:48,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:04:48,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1589784091, now seen corresponding path program 1 times [2023-11-21 19:04:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:48,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730276046] [2023-11-21 19:04:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:51,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730276046] [2023-11-21 19:04:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730276046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:51,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:04:51,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:04:51,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567247270] [2023-11-21 19:04:51,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:51,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:51,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:51,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:04:51,807 INFO L87 Difference]: Start difference. First operand 1923 states and 2729 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) [2023-11-21 19:04:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:52,772 INFO L93 Difference]: Finished difference Result 1925 states and 2730 transitions. [2023-11-21 19:04:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:52,773 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 [2023-11-21 19:04:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:52,788 INFO L225 Difference]: With dead ends: 1925 [2023-11-21 19:04:52,788 INFO L226 Difference]: Without dead ends: 1913 [2023-11-21 19:04:52,790 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 [2023-11-21 19:04:52,792 INFO L413 NwaCegarLoop]: 1248 mSDtfsCounter, 1407 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:52,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1248 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 19:04:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2023-11-21 19:04:52,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913. [2023-11-21 19:04:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1205 states have (on average 1.24149377593361) internal successors, (1496), 1235 states have internal predecessors, (1496), 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) [2023-11-21 19:04:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2712 transitions. [2023-11-21 19:04:52,942 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2712 transitions. Word has length 18 [2023-11-21 19:04:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:52,943 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 2712 transitions. [2023-11-21 19:04:52,943 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) [2023-11-21 19:04:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2712 transitions. [2023-11-21 19:04:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-21 19:04:52,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:52,956 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] [2023-11-21 19:04:52,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:04:52,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:04:52,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:52,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1608255110, now seen corresponding path program 1 times [2023-11-21 19:04:52,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:52,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816287596] [2023-11-21 19:04:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:52,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 19:04:56,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816287596] [2023-11-21 19:04:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816287596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:56,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:04:56,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:04:56,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745822024] [2023-11-21 19:04:56,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:56,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:56,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:04:56,026 INFO L87 Difference]: Start difference. First operand 1913 states and 2712 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) [2023-11-21 19:04:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:57,890 INFO L93 Difference]: Finished difference Result 4533 states and 6521 transitions. [2023-11-21 19:04:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:57,891 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 [2023-11-21 19:04:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:57,914 INFO L225 Difference]: With dead ends: 4533 [2023-11-21 19:04:57,914 INFO L226 Difference]: Without dead ends: 2642 [2023-11-21 19:04:57,924 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 [2023-11-21 19:04:57,925 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 372 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:57,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 2496 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 19:04:57,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2023-11-21 19:04:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2638. [2023-11-21 19:04:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 1676 states have (on average 1.2523866348448687) internal successors, (2099), 1720 states have internal predecessors, (2099), 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) [2023-11-21 19:04:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3824 transitions. [2023-11-21 19:04:58,156 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3824 transitions. Word has length 81 [2023-11-21 19:04:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:58,156 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 3824 transitions. [2023-11-21 19:04:58,157 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) [2023-11-21 19:04:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3824 transitions. [2023-11-21 19:04:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-21 19:04:58,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:58,167 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] [2023-11-21 19:04:58,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:04:58,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:04:58,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash 62967617, now seen corresponding path program 1 times [2023-11-21 19:04:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:58,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408537435] [2023-11-21 19:04:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:58,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 19:05:01,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:01,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408537435] [2023-11-21 19:05:01,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408537435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:01,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:01,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:05:01,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611535416] [2023-11-21 19:05:01,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:01,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:05:01,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:01,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:05:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:05:01,521 INFO L87 Difference]: Start difference. First operand 2638 states and 3824 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) [2023-11-21 19:05:03,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:03,680 INFO L93 Difference]: Finished difference Result 5269 states and 7643 transitions. [2023-11-21 19:05:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:05:03,681 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 [2023-11-21 19:05:03,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:03,704 INFO L225 Difference]: With dead ends: 5269 [2023-11-21 19:05:03,704 INFO L226 Difference]: Without dead ends: 2654 [2023-11-21 19:05:03,716 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 [2023-11-21 19:05:03,724 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 58 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:03,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 3647 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 19:05:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2023-11-21 19:05:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2644. [2023-11-21 19:05:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1680 states have (on average 1.2517857142857143) internal successors, (2103), 1724 states have internal predecessors, (2103), 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) [2023-11-21 19:05:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3832 transitions. [2023-11-21 19:05:03,938 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3832 transitions. Word has length 113 [2023-11-21 19:05:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:03,941 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 3832 transitions. [2023-11-21 19:05:03,941 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) [2023-11-21 19:05:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3832 transitions. [2023-11-21 19:05:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-21 19:05:03,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:03,956 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] [2023-11-21 19:05:03,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:05:03,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:05:03,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1907735153, now seen corresponding path program 1 times [2023-11-21 19:05:03,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:03,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743815794] [2023-11-21 19:05:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:03,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-21 19:05:07,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743815794] [2023-11-21 19:05:07,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743815794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:07,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:07,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:05:07,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073855499] [2023-11-21 19:05:07,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:07,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:05:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:05:07,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:07,523 INFO L87 Difference]: Start difference. First operand 2644 states and 3832 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) [2023-11-21 19:05:09,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:05:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:11,015 INFO L93 Difference]: Finished difference Result 3845 states and 5578 transitions. [2023-11-21 19:05:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:05:11,015 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 [2023-11-21 19:05:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:11,029 INFO L225 Difference]: With dead ends: 3845 [2023-11-21 19:05:11,029 INFO L226 Difference]: Without dead ends: 1224 [2023-11-21 19:05:11,043 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 [2023-11-21 19:05:11,046 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 9 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4055 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:11,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4055 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-21 19:05:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-11-21 19:05:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1215. [2023-11-21 19:05:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 779 states have (on average 1.2528883183568678) internal successors, (976), 797 states have internal predecessors, (976), 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) [2023-11-21 19:05:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1755 transitions. [2023-11-21 19:05:11,135 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1755 transitions. Word has length 118 [2023-11-21 19:05:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:11,136 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1755 transitions. [2023-11-21 19:05:11,137 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) [2023-11-21 19:05:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1755 transitions. [2023-11-21 19:05:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-21 19:05:11,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:11,146 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] [2023-11-21 19:05:11,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:05:11,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:05:11,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash 372619188, now seen corresponding path program 1 times [2023-11-21 19:05:11,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:11,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083545544] [2023-11-21 19:05:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:11,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 19:05:14,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083545544] [2023-11-21 19:05:14,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083545544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247701876] [2023-11-21 19:05:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:14,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:14,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:14,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:14,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b3200ec-2bb7-48c3-a287-6d7a4f6ea821/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:05:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:17,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 3153 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:05:17,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 19:05:17,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:05:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 19:05:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247701876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:05:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [192676795] [2023-11-21 19:05:17,811 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2023-11-21 19:05:17,811 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:05:17,815 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:05:17,820 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:05:17,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs