./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/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_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/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_4bd06345-bf09-488c-8b68-5b153fc97947/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 9e6cb9575d01b247a38f631016ebb8c3cacd422c61aaebbf8be9e6e4657d498f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:33:57,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:33:57,477 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:33:57,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:33:57,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:33:57,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:33:57,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:33:57,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:33:57,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:33:57,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:33:57,539 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:33:57,540 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:33:57,540 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:33:57,542 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:33:57,543 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:33:57,543 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:33:57,544 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:33:57,544 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:33:57,545 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:33:57,545 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:33:57,547 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:33:57,548 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:33:57,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:33:57,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:33:57,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:33:57,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:33:57,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:33:57,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:33:57,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:33:57,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:33:57,552 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:33:57,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:33:57,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:33:57,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:33:57,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:33:57,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:33:57,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:33:57,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:33:57,554 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:33:57,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:33:57,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:33:57,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:33:57,556 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:33:57,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:33:57,556 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_4bd06345-bf09-488c-8b68-5b153fc97947/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e6cb9575d01b247a38f631016ebb8c3cacd422c61aaebbf8be9e6e4657d498f [2023-11-21 19:33:57,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:33:57,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:33:57,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:33:57,956 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:33:57,957 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:33:57,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i [2023-11-21 19:34:01,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:34:01,689 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:34:01,690 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i [2023-11-21 19:34:01,743 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/data/594ece63b/10b27ebcb0b74a4ea5576dd4a1c93a46/FLAG5c181a118 [2023-11-21 19:34:01,761 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/data/594ece63b/10b27ebcb0b74a4ea5576dd4a1c93a46 [2023-11-21 19:34:01,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:34:01,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:34:01,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:34:01,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:34:01,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:34:01,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:34:01" (1/1) ... [2023-11-21 19:34:01,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbdbcfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:01, skipping insertion in model container [2023-11-21 19:34:01,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:34:01" (1/1) ... [2023-11-21 19:34:01,923 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:34:03,655 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_4bd06345-bf09-488c-8b68-5b153fc97947/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i[172920,172933] [2023-11-21 19:34:03,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:34:03,827 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:34:04,130 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_4bd06345-bf09-488c-8b68-5b153fc97947/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i[172920,172933] [2023-11-21 19:34:04,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:34:04,252 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:34:04,261 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:34:04,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04 WrapperNode [2023-11-21 19:34:04,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:34:04,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:34:04,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:34:04,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:34:04,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,554 INFO L138 Inliner]: procedures = 262, calls = 943, calls flagged for inlining = 102, calls inlined = 94, statements flattened = 2428 [2023-11-21 19:34:04,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:34:04,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:34:04,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:34:04,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:34:04,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:34:04,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:34:04,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:34:04,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:34:04,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (1/1) ... [2023-11-21 19:34:04,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:34:04,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:34:04,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:34:04,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd06345-bf09-488c-8b68-5b153fc97947/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:34:04,898 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_read [2023-11-21 19:34:04,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_read [2023-11-21 19:34:04,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 19:34:04,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 19:34:04,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-21 19:34:04,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-21 19:34:04,901 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2023-11-21 19:34:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2023-11-21 19:34:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 19:34:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 19:34:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2023-11-21 19:34:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2023-11-21 19:34:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2023-11-21 19:34:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2023-11-21 19:34:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2023-11-21 19:34:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2023-11-21 19:34:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-21 19:34:04,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-21 19:34:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure of_property_read_u32 [2023-11-21 19:34:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure of_property_read_u32 [2023-11-21 19:34:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_tsc2005 [2023-11-21 19:34:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_tsc2005 [2023-11-21 19:34:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 19:34:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 19:34:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-11-21 19:34:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-11-21 19:34:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2023-11-21 19:34:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2023-11-21 19:34:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 19:34:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 19:34:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2023-11-21 19:34:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2023-11-21 19:34:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:34:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:34:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-21 19:34:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-21 19:34:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 19:34:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 19:34:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2023-11-21 19:34:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2023-11-21 19:34:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tsc2005 [2023-11-21 19:34:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tsc2005 [2023-11-21 19:34:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:34:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-21 19:34:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-21 19:34:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-21 19:34:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-21 19:34:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-21 19:34:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:34:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_stop_scan [2023-11-21 19:34:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_stop_scan [2023-11-21 19:34:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_write [2023-11-21 19:34:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_write [2023-11-21 19:34:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-21 19:34:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-21 19:34:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 19:34:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 19:34:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_cmd [2023-11-21 19:34:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_cmd [2023-11-21 19:34:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:34:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-21 19:34:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-21 19:34:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:34:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2023-11-21 19:34:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2023-11-21 19:34:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 19:34:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 19:34:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_esd_work [2023-11-21 19:34:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_esd_work [2023-11-21 19:34:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-21 19:34:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-21 19:34:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2023-11-21 19:34:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2023-11-21 19:34:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_suspend [2023-11-21 19:34:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_suspend [2023-11-21 19:34:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-21 19:34:04,919 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-21 19:34:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2023-11-21 19:34:04,919 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2023-11-21 19:34:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-21 19:34:04,919 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-21 19:34:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-21 19:34:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-21 19:34:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2023-11-21 19:34:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2023-11-21 19:34:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:34:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-21 19:34:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-21 19:34:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-21 19:34:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-21 19:34:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2023-11-21 19:34:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2023-11-21 19:34:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2023-11-21 19:34:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2023-11-21 19:34:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_4 [2023-11-21 19:34:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_4 [2023-11-21 19:34:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_start_scan [2023-11-21 19:34:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_start_scan [2023-11-21 19:34:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_resume [2023-11-21 19:34:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_resume [2023-11-21 19:34:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:34:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 19:34:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 19:34:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-21 19:34:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-21 19:34:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2023-11-21 19:34:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2023-11-21 19:34:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:34:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2023-11-21 19:34:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2023-11-21 19:34:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:34:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-21 19:34:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-21 19:34:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:34:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-21 19:34:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-21 19:34:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-21 19:34:04,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-21 19:34:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2023-11-21 19:34:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2023-11-21 19:34:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2023-11-21 19:34:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2023-11-21 19:34:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_setup_read [2023-11-21 19:34:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_setup_read [2023-11-21 19:34:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure __tsc2005_enable [2023-11-21 19:34:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __tsc2005_enable [2023-11-21 19:34:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2023-11-21 19:34:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2023-11-21 19:34:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tsc2005 [2023-11-21 19:34:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tsc2005 [2023-11-21 19:34:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_irq_thread [2023-11-21 19:34:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_irq_thread [2023-11-21 19:34:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure __tsc2005_disable [2023-11-21 19:34:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __tsc2005_disable [2023-11-21 19:34:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_update_pen_state [2023-11-21 19:34:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_update_pen_state [2023-11-21 19:34:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-21 19:34:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-21 19:34:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-11-21 19:34:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-11-21 19:34:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_set_reset [2023-11-21 19:34:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_set_reset [2023-11-21 19:34:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-21 19:34:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-21 19:34:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:34:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:34:04,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:34:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-21 19:34:04,937 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-21 19:34:05,437 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:34:05,443 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:34:05,847 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 19:34:12,351 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:34:13,388 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:34:13,389 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:34:13,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:34:13 BoogieIcfgContainer [2023-11-21 19:34:13,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:34:13,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:34:13,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:34:13,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:34:13,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:34:01" (1/3) ... [2023-11-21 19:34:13,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cfb771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:34:13, skipping insertion in model container [2023-11-21 19:34:13,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:04" (2/3) ... [2023-11-21 19:34:13,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cfb771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:34:13, skipping insertion in model container [2023-11-21 19:34:13,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:34:13" (3/3) ... [2023-11-21 19:34:13,406 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i [2023-11-21 19:34:13,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:34:13,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:34:13,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:34:13,521 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;@5b387805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:34:13,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:34:13,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 700 states, 421 states have (on average 1.3847980997624703) internal successors, (583), 452 states have internal predecessors, (583), 210 states have call successors, (210), 68 states have call predecessors, (210), 67 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2023-11-21 19:34:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-21 19:34:13,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:13,549 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:13,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:34:13,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash -844855809, now seen corresponding path program 1 times [2023-11-21 19:34:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451845748] [2023-11-21 19:34:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:13,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-21 19:34:14,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:14,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451845748] [2023-11-21 19:34:14,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451845748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:14,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:14,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:34:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830272617] [2023-11-21 19:34:14,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:14,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:14,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:14,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:14,622 INFO L87 Difference]: Start difference. First operand has 700 states, 421 states have (on average 1.3847980997624703) internal successors, (583), 452 states have internal predecessors, (583), 210 states have call successors, (210), 68 states have call predecessors, (210), 67 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-21 19:34:16,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:18,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:21,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:23,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:25,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:25,517 INFO L93 Difference]: Finished difference Result 1896 states and 2740 transitions. [2023-11-21 19:34:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2023-11-21 19:34:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:25,584 INFO L225 Difference]: With dead ends: 1896 [2023-11-21 19:34:25,584 INFO L226 Difference]: Without dead ends: 1180 [2023-11-21 19:34:25,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 19:34:25,601 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 750 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:25,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1735 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 259 Invalid, 4 Unknown, 0 Unchecked, 10.7s Time] [2023-11-21 19:34:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2023-11-21 19:34:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1175. [2023-11-21 19:34:25,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 740 states have (on average 1.3756756756756756) internal successors, (1018), 771 states have internal predecessors, (1018), 322 states have call successors, (322), 117 states have call predecessors, (322), 112 states have return successors, (323), 297 states have call predecessors, (323), 315 states have call successors, (323) [2023-11-21 19:34:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1663 transitions. [2023-11-21 19:34:25,786 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1663 transitions. Word has length 83 [2023-11-21 19:34:25,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:25,787 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1663 transitions. [2023-11-21 19:34:25,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-21 19:34:25,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1663 transitions. [2023-11-21 19:34:25,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-21 19:34:25,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:25,794 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:34:25,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:34:25,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2033300393, now seen corresponding path program 1 times [2023-11-21 19:34:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427134266] [2023-11-21 19:34:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-21 19:34:26,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427134266] [2023-11-21 19:34:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427134266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:26,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:34:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908724021] [2023-11-21 19:34:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:26,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:26,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:26,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:26,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:26,039 INFO L87 Difference]: Start difference. First operand 1175 states and 1663 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-21 19:34:28,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:30,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:32,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:34,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:37,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:39,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:39,315 INFO L93 Difference]: Finished difference Result 3458 states and 4897 transitions. [2023-11-21 19:34:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:39,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 82 [2023-11-21 19:34:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:39,338 INFO L225 Difference]: With dead ends: 3458 [2023-11-21 19:34:39,338 INFO L226 Difference]: Without dead ends: 2296 [2023-11-21 19:34:39,345 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 19:34:39,350 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 895 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:39,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1651 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 6 Unknown, 0 Unchecked, 13.1s Time] [2023-11-21 19:34:39,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2023-11-21 19:34:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2291. [2023-11-21 19:34:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1447 states have (on average 1.373876986869385) internal successors, (1988), 1503 states have internal predecessors, (1988), 623 states have call successors, (623), 229 states have call predecessors, (623), 220 states have return successors, (632), 580 states have call predecessors, (632), 616 states have call successors, (632) [2023-11-21 19:34:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3243 transitions. [2023-11-21 19:34:39,593 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3243 transitions. Word has length 82 [2023-11-21 19:34:39,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:39,596 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3243 transitions. [2023-11-21 19:34:39,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-21 19:34:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3243 transitions. [2023-11-21 19:34:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-21 19:34:39,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:39,604 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:39,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:34:39,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:34:39,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 845909991, now seen corresponding path program 1 times [2023-11-21 19:34:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:39,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788094105] [2023-11-21 19:34:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:39,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-21 19:34:39,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:39,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788094105] [2023-11-21 19:34:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788094105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:39,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:39,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:34:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722585339] [2023-11-21 19:34:39,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:39,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:39,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:39,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:39,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:39,846 INFO L87 Difference]: Start difference. First operand 2291 states and 3243 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:34:42,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:44,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:44,545 INFO L93 Difference]: Finished difference Result 2293 states and 3244 transitions. [2023-11-21 19:34:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:44,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2023-11-21 19:34:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:44,566 INFO L225 Difference]: With dead ends: 2293 [2023-11-21 19:34:44,566 INFO L226 Difference]: Without dead ends: 2290 [2023-11-21 19:34:44,568 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 19:34:44,569 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 926 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:44,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 826 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2023-11-21 19:34:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2023-11-21 19:34:44,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2290. [2023-11-21 19:34:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2290 states, 1447 states have (on average 1.372494816862474) internal successors, (1986), 1502 states have internal predecessors, (1986), 622 states have call successors, (622), 229 states have call predecessors, (622), 220 states have return successors, (632), 580 states have call predecessors, (632), 616 states have call successors, (632) [2023-11-21 19:34:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3240 transitions. [2023-11-21 19:34:44,792 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3240 transitions. Word has length 84 [2023-11-21 19:34:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:44,794 INFO L495 AbstractCegarLoop]: Abstraction has 2290 states and 3240 transitions. [2023-11-21 19:34:44,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:34:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3240 transitions. [2023-11-21 19:34:44,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-21 19:34:44,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:44,800 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:44,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:34:44,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:34:44,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:44,801 INFO L85 PathProgramCache]: Analyzing trace with hash 453114753, now seen corresponding path program 1 times [2023-11-21 19:34:44,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:44,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682136643] [2023-11-21 19:34:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:44,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-21 19:34:45,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:45,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682136643] [2023-11-21 19:34:45,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682136643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:45,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:45,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:34:45,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159128327] [2023-11-21 19:34:45,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:45,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:45,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:45,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:45,037 INFO L87 Difference]: Start difference. First operand 2290 states and 3240 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:34:47,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:49,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:49,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:49,895 INFO L93 Difference]: Finished difference Result 2292 states and 3241 transitions. [2023-11-21 19:34:49,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:49,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2023-11-21 19:34:49,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:49,919 INFO L225 Difference]: With dead ends: 2292 [2023-11-21 19:34:49,920 INFO L226 Difference]: Without dead ends: 2289 [2023-11-21 19:34:49,921 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 19:34:49,927 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 923 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:49,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 824 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2023-11-21 19:34:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2023-11-21 19:34:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2023-11-21 19:34:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 1447 states have (on average 1.3711126468555632) internal successors, (1984), 1501 states have internal predecessors, (1984), 621 states have call successors, (621), 229 states have call predecessors, (621), 220 states have return successors, (632), 580 states have call predecessors, (632), 616 states have call successors, (632) [2023-11-21 19:34:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3237 transitions. [2023-11-21 19:34:50,129 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3237 transitions. Word has length 85 [2023-11-21 19:34:50,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:50,130 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3237 transitions. [2023-11-21 19:34:50,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:34:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3237 transitions. [2023-11-21 19:34:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-21 19:34:50,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:50,139 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:50,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:34:50,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:34:50,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:50,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1161369130, now seen corresponding path program 1 times [2023-11-21 19:34:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:50,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818585283] [2023-11-21 19:34:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:50,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-21 19:34:50,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:50,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818585283] [2023-11-21 19:34:50,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818585283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:50,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:50,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:34:50,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867096036] [2023-11-21 19:34:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:50,377 INFO L87 Difference]: Start difference. First operand 2289 states and 3237 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:34:52,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:55,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:34:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:55,148 INFO L93 Difference]: Finished difference Result 2291 states and 3238 transitions. [2023-11-21 19:34:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:55,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2023-11-21 19:34:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:55,167 INFO L225 Difference]: With dead ends: 2291 [2023-11-21 19:34:55,167 INFO L226 Difference]: Without dead ends: 2284 [2023-11-21 19:34:55,169 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 19:34:55,170 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 920 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:55,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 822 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2023-11-21 19:34:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2023-11-21 19:34:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2284. [2023-11-21 19:34:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 1443 states have (on average 1.37006237006237) internal successors, (1977), 1496 states have internal predecessors, (1977), 620 states have call successors, (620), 229 states have call predecessors, (620), 220 states have return successors, (632), 580 states have call predecessors, (632), 616 states have call successors, (632) [2023-11-21 19:34:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3229 transitions. [2023-11-21 19:34:55,349 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3229 transitions. Word has length 86 [2023-11-21 19:34:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:55,350 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3229 transitions. [2023-11-21 19:34:55,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:34:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3229 transitions. [2023-11-21 19:34:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-21 19:34:55,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:55,353 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:55,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:34:55,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:34:55,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:55,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1883811990, now seen corresponding path program 1 times [2023-11-21 19:34:55,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:55,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414933784] [2023-11-21 19:34:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:55,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-21 19:34:55,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:55,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414933784] [2023-11-21 19:34:55,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414933784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:55,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:55,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:34:55,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110020576] [2023-11-21 19:34:55,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:55,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:55,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:55,705 INFO L87 Difference]: Start difference. First operand 2284 states and 3229 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)