./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:40:56,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:40:56,234 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 15:40:56,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:40:56,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:40:56,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:40:56,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:40:56,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:40:56,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:40:56,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:40:56,274 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:40:56,274 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:40:56,275 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:40:56,275 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:40:56,275 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:40:56,276 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:40:56,276 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:40:56,277 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:40:56,277 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:40:56,278 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:40:56,278 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:40:56,279 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:40:56,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:40:56,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:40:56,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:40:56,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:40:56,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:40:56,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:40:56,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:40:56,283 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:40:56,284 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:40:56,284 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:40:56,284 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:40:56,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:40:56,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:40:56,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:40:56,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:40:56,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:40:56,287 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:40:56,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:40:56,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:40:56,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:40:56,289 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:40:56,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:40:56,289 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_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2023-12-02 15:40:56,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:40:56,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:40:56,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:40:56,527 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:40:56,528 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:40:56,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2023-12-02 15:40:59,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:40:59,616 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:40:59,617 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2023-12-02 15:40:59,646 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/data/d73362e31/dfb247c9ff544a6a8420e1df5227b1b9/FLAG792acc2c2 [2023-12-02 15:40:59,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/data/d73362e31/dfb247c9ff544a6a8420e1df5227b1b9 [2023-12-02 15:40:59,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:40:59,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:40:59,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:40:59,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:40:59,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:40:59,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:40:59,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7bead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59, skipping insertion in model container [2023-12-02 15:40:59,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:40:59,782 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:41:00,738 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_082823ca-28ef-4522-8911-0668af7815a1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2023-12-02 15:41:00,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:41:00,880 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:41:01,031 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_082823ca-28ef-4522-8911-0668af7815a1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2023-12-02 15:41:01,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:41:01,159 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:41:01,167 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:41:01,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01 WrapperNode [2023-12-02 15:41:01,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:41:01,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:41:01,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:41:01,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:41:01,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,360 INFO L138 Inliner]: procedures = 138, calls = 1489, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 4020 [2023-12-02 15:41:01,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:41:01,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:41:01,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:41:01,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:41:01,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:41:01,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:41:01,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:41:01,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:41:01,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (1/1) ... [2023-12-02 15:41:01,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:41:01,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:41:01,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:41:01,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082823ca-28ef-4522-8911-0668af7815a1/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:41:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2023-12-02 15:41:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2023-12-02 15:41:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-12-02 15:41:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-12-02 15:41:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:41:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2023-12-02 15:41:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2023-12-02 15:41:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-12-02 15:41:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-12-02 15:41:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2023-12-02 15:41:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2023-12-02 15:41:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2023-12-02 15:41:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2023-12-02 15:41:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 15:41:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 15:41:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:41:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 15:41:01,614 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 15:41:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 15:41:01,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 15:41:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 15:41:01,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 15:41:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 15:41:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 15:41:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:41:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2023-12-02 15:41:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2023-12-02 15:41:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-12-02 15:41:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-12-02 15:41:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2023-12-02 15:41:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2023-12-02 15:41:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2023-12-02 15:41:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2023-12-02 15:41:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2023-12-02 15:41:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2023-12-02 15:41:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:41:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:41:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:41:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 15:41:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2023-12-02 15:41:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2023-12-02 15:41:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2023-12-02 15:41:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2023-12-02 15:41:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:41:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2023-12-02 15:41:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2023-12-02 15:41:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2023-12-02 15:41:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2023-12-02 15:41:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:41:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:41:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2023-12-02 15:41:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2023-12-02 15:41:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2023-12-02 15:41:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2023-12-02 15:41:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 15:41:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 15:41:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2023-12-02 15:41:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2023-12-02 15:41:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:41:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2023-12-02 15:41:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2023-12-02 15:41:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2023-12-02 15:41:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2023-12-02 15:41:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:41:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:41:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2023-12-02 15:41:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2023-12-02 15:41:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 15:41:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 15:41:02,076 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:41:02,077 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:41:05,406 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:41:06,396 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:41:06,396 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 15:41:06,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:41:06 BoogieIcfgContainer [2023-12-02 15:41:06,398 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:41:06,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:41:06,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:41:06,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:41:06,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:40:59" (1/3) ... [2023-12-02 15:41:06,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fdfbdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:41:06, skipping insertion in model container [2023-12-02 15:41:06,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:01" (2/3) ... [2023-12-02 15:41:06,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fdfbdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:41:06, skipping insertion in model container [2023-12-02 15:41:06,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:41:06" (3/3) ... [2023-12-02 15:41:06,406 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2023-12-02 15:41:06,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:41:06,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:41:06,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:41:06,502 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;@2408c78c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:41:06,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:41:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 731 states, 502 states have (on average 1.5119521912350598) internal successors, (759), 509 states have internal predecessors, (759), 199 states have call successors, (199), 28 states have call predecessors, (199), 28 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) [2023-12-02 15:41:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 15:41:06,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:06,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:06,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:06,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1617191529, now seen corresponding path program 1 times [2023-12-02 15:41:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:06,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28897567] [2023-12-02 15:41:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:06,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:07,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28897567] [2023-12-02 15:41:07,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28897567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:07,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:07,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434731116] [2023-12-02 15:41:07,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:07,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:07,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:07,195 INFO L87 Difference]: Start difference. First operand has 731 states, 502 states have (on average 1.5119521912350598) internal successors, (759), 509 states have internal predecessors, (759), 199 states have call successors, (199), 28 states have call predecessors, (199), 28 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:08,055 INFO L93 Difference]: Finished difference Result 2184 states and 3593 transitions. [2023-12-02 15:41:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:08,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2023-12-02 15:41:08,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:08,083 INFO L225 Difference]: With dead ends: 2184 [2023-12-02 15:41:08,083 INFO L226 Difference]: Without dead ends: 1450 [2023-12-02 15:41:08,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:08,097 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 1131 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:08,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 2072 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:41:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-12-02 15:41:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1437. [2023-12-02 15:41:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 991 states have (on average 1.5075681130171543) internal successors, (1494), 996 states have internal predecessors, (1494), 391 states have call successors, (391), 55 states have call predecessors, (391), 54 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-02 15:41:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2270 transitions. [2023-12-02 15:41:08,293 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2270 transitions. Word has length 30 [2023-12-02 15:41:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:08,296 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2270 transitions. [2023-12-02 15:41:08,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2270 transitions. [2023-12-02 15:41:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 15:41:08,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:08,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:41:08,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:08,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -850635315, now seen corresponding path program 1 times [2023-12-02 15:41:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719635939] [2023-12-02 15:41:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:08,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719635939] [2023-12-02 15:41:08,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719635939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:08,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:08,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085517580] [2023-12-02 15:41:08,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:08,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:08,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:08,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:08,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:08,658 INFO L87 Difference]: Start difference. First operand 1437 states and 2270 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:09,634 INFO L93 Difference]: Finished difference Result 4300 states and 6792 transitions. [2023-12-02 15:41:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:09,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-12-02 15:41:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:09,661 INFO L225 Difference]: With dead ends: 4300 [2023-12-02 15:41:09,661 INFO L226 Difference]: Without dead ends: 2864 [2023-12-02 15:41:09,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:09,671 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 1130 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:09,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 2077 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:41:09,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2023-12-02 15:41:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 2851. [2023-12-02 15:41:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2851 states, 1968 states have (on average 1.5060975609756098) internal successors, (2964), 1973 states have internal predecessors, (2964), 774 states have call successors, (774), 109 states have call predecessors, (774), 108 states have return successors, (768), 768 states have call predecessors, (768), 768 states have call successors, (768) [2023-12-02 15:41:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 4506 transitions. [2023-12-02 15:41:09,877 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 4506 transitions. Word has length 29 [2023-12-02 15:41:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:09,878 INFO L495 AbstractCegarLoop]: Abstraction has 2851 states and 4506 transitions. [2023-12-02 15:41:09,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 4506 transitions. [2023-12-02 15:41:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 15:41:09,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:09,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:09,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:41:09,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:09,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1279681919, now seen corresponding path program 1 times [2023-12-02 15:41:09,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:09,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71613740] [2023-12-02 15:41:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:09,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:10,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71613740] [2023-12-02 15:41:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71613740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:10,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138447825] [2023-12-02 15:41:10,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:10,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:10,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:10,133 INFO L87 Difference]: Start difference. First operand 2851 states and 4506 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:11,025 INFO L93 Difference]: Finished difference Result 8534 states and 13486 transitions. [2023-12-02 15:41:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:11,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-12-02 15:41:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:11,071 INFO L225 Difference]: With dead ends: 8534 [2023-12-02 15:41:11,072 INFO L226 Difference]: Without dead ends: 5684 [2023-12-02 15:41:11,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:11,090 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 1132 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:11,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 2085 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:41:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2023-12-02 15:41:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 5671. [2023-12-02 15:41:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 3916 states have (on average 1.5045965270684372) internal successors, (5892), 3921 states have internal predecessors, (5892), 1538 states have call successors, (1538), 217 states have call predecessors, (1538), 216 states have return successors, (1532), 1532 states have call predecessors, (1532), 1532 states have call successors, (1532) [2023-12-02 15:41:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 8962 transitions. [2023-12-02 15:41:11,455 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 8962 transitions. Word has length 25 [2023-12-02 15:41:11,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:11,455 INFO L495 AbstractCegarLoop]: Abstraction has 5671 states and 8962 transitions. [2023-12-02 15:41:11,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:11,455 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 8962 transitions. [2023-12-02 15:41:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:41:11,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:11,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:11,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:41:11,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:11,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:11,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1825581620, now seen corresponding path program 1 times [2023-12-02 15:41:11,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:11,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879207361] [2023-12-02 15:41:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:11,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:11,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:11,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879207361] [2023-12-02 15:41:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879207361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:11,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:11,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:11,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576266945] [2023-12-02 15:41:11,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:11,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:11,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:11,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:11,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:11,699 INFO L87 Difference]: Start difference. First operand 5671 states and 8962 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:12,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:12,822 INFO L93 Difference]: Finished difference Result 16978 states and 26826 transitions. [2023-12-02 15:41:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:12,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-12-02 15:41:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:12,946 INFO L225 Difference]: With dead ends: 16978 [2023-12-02 15:41:12,946 INFO L226 Difference]: Without dead ends: 11308 [2023-12-02 15:41:12,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:12,980 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 1131 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:12,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 2091 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:41:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11308 states. [2023-12-02 15:41:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11308 to 11295. [2023-12-02 15:41:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11295 states, 7800 states have (on average 1.503076923076923) internal successors, (11724), 7805 states have internal predecessors, (11724), 3062 states have call successors, (3062), 433 states have call predecessors, (3062), 432 states have return successors, (3056), 3056 states have call predecessors, (3056), 3056 states have call successors, (3056) [2023-12-02 15:41:13,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11295 states to 11295 states and 17842 transitions. [2023-12-02 15:41:13,797 INFO L78 Accepts]: Start accepts. Automaton has 11295 states and 17842 transitions. Word has length 26 [2023-12-02 15:41:13,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:13,798 INFO L495 AbstractCegarLoop]: Abstraction has 11295 states and 17842 transitions. [2023-12-02 15:41:13,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 11295 states and 17842 transitions. [2023-12-02 15:41:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 15:41:13,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:13,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:13,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:41:13,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:13,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash -381476137, now seen corresponding path program 1 times [2023-12-02 15:41:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:13,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531240988] [2023-12-02 15:41:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:13,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:14,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:14,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531240988] [2023-12-02 15:41:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531240988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:14,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:14,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141427807] [2023-12-02 15:41:14,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:14,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:14,087 INFO L87 Difference]: Start difference. First operand 11295 states and 17842 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:15,521 INFO L93 Difference]: Finished difference Result 33754 states and 53298 transitions. [2023-12-02 15:41:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2023-12-02 15:41:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:15,648 INFO L225 Difference]: With dead ends: 33754 [2023-12-02 15:41:15,648 INFO L226 Difference]: Without dead ends: 22460 [2023-12-02 15:41:15,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:15,695 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 1121 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:15,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 2093 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:41:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22460 states. [2023-12-02 15:41:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22460 to 22447. [2023-12-02 15:41:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22447 states, 15496 states have (on average 1.5010325245224574) internal successors, (23260), 15501 states have internal predecessors, (23260), 6086 states have call successors, (6086), 865 states have call predecessors, (6086), 864 states have return successors, (6080), 6080 states have call predecessors, (6080), 6080 states have call successors, (6080) [2023-12-02 15:41:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22447 states to 22447 states and 35426 transitions. [2023-12-02 15:41:17,146 INFO L78 Accepts]: Start accepts. Automaton has 22447 states and 35426 transitions. Word has length 31 [2023-12-02 15:41:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:17,147 INFO L495 AbstractCegarLoop]: Abstraction has 22447 states and 35426 transitions. [2023-12-02 15:41:17,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 22447 states and 35426 transitions. [2023-12-02 15:41:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:41:17,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:17,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:17,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:41:17,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:17,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1203939063, now seen corresponding path program 1 times [2023-12-02 15:41:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:17,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895215236] [2023-12-02 15:41:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:17,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:17,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:17,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895215236] [2023-12-02 15:41:17,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895215236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:17,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:17,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273765751] [2023-12-02 15:41:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:17,450 INFO L87 Difference]: Start difference. First operand 22447 states and 35426 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:19,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:19,064 INFO L93 Difference]: Finished difference Result 67210 states and 106050 transitions. [2023-12-02 15:41:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:19,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-12-02 15:41:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:19,278 INFO L225 Difference]: With dead ends: 67210 [2023-12-02 15:41:19,278 INFO L226 Difference]: Without dead ends: 44764 [2023-12-02 15:41:19,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:19,439 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 1133 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:19,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 2110 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:41:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44764 states. [2023-12-02 15:41:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44764 to 44751. [2023-12-02 15:41:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44751 states, 30888 states have (on average 1.4994819994819995) internal successors, (46316), 30893 states have internal predecessors, (46316), 12134 states have call successors, (12134), 1729 states have call predecessors, (12134), 1728 states have return successors, (12128), 12128 states have call predecessors, (12128), 12128 states have call successors, (12128) [2023-12-02 15:41:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44751 states to 44751 states and 70578 transitions. [2023-12-02 15:41:21,343 INFO L78 Accepts]: Start accepts. Automaton has 44751 states and 70578 transitions. Word has length 26 [2023-12-02 15:41:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:21,343 INFO L495 AbstractCegarLoop]: Abstraction has 44751 states and 70578 transitions. [2023-12-02 15:41:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 44751 states and 70578 transitions. [2023-12-02 15:41:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 15:41:21,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:21,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:21,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 15:41:21,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:21,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:21,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1413812980, now seen corresponding path program 1 times [2023-12-02 15:41:21,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:21,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549738831] [2023-12-02 15:41:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:21,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:21,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:21,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549738831] [2023-12-02 15:41:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549738831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:21,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22284769] [2023-12-02 15:41:21,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:21,558 INFO L87 Difference]: Start difference. First operand 44751 states and 70578 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:24,737 INFO L93 Difference]: Finished difference Result 133994 states and 211282 transitions. [2023-12-02 15:41:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:24,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-12-02 15:41:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:25,146 INFO L225 Difference]: With dead ends: 133994 [2023-12-02 15:41:25,146 INFO L226 Difference]: Without dead ends: 89244 [2023-12-02 15:41:25,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:25,297 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 1126 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:25,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 2117 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:41:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89244 states. [2023-12-02 15:41:28,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89244 to 89231. [2023-12-02 15:41:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89231 states, 61576 states have (on average 1.497921268026504) internal successors, (92236), 61581 states have internal predecessors, (92236), 24198 states have call successors, (24198), 3457 states have call predecessors, (24198), 3456 states have return successors, (24192), 24192 states have call predecessors, (24192), 24192 states have call successors, (24192) [2023-12-02 15:41:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89231 states to 89231 states and 140626 transitions. [2023-12-02 15:41:28,842 INFO L78 Accepts]: Start accepts. Automaton has 89231 states and 140626 transitions. Word has length 33 [2023-12-02 15:41:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:28,842 INFO L495 AbstractCegarLoop]: Abstraction has 89231 states and 140626 transitions. [2023-12-02 15:41:28,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 89231 states and 140626 transitions. [2023-12-02 15:41:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 15:41:28,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:28,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:28,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 15:41:28,844 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:28,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:28,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1102996381, now seen corresponding path program 1 times [2023-12-02 15:41:28,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:28,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172734003] [2023-12-02 15:41:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:28,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:29,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:29,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172734003] [2023-12-02 15:41:29,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172734003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117630281] [2023-12-02 15:41:29,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:29,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:29,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:29,314 INFO L87 Difference]: Start difference. First operand 89231 states and 140626 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:35,235 INFO L93 Difference]: Finished difference Result 266666 states and 420082 transitions. [2023-12-02 15:41:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-12-02 15:41:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:36,040 INFO L225 Difference]: With dead ends: 266666 [2023-12-02 15:41:36,040 INFO L226 Difference]: Without dead ends: 177436 [2023-12-02 15:41:36,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:36,268 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 1120 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:36,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2121 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:41:36,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177436 states. [2023-12-02 15:41:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177436 to 177423. [2023-12-02 15:41:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177423 states, 122376 states have (on average 1.4958161731058377) internal successors, (183052), 122381 states have internal predecessors, (183052), 48134 states have call successors, (48134), 6913 states have call predecessors, (48134), 6912 states have return successors, (48128), 48128 states have call predecessors, (48128), 48128 states have call successors, (48128) [2023-12-02 15:41:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177423 states to 177423 states and 279314 transitions. [2023-12-02 15:41:44,053 INFO L78 Accepts]: Start accepts. Automaton has 177423 states and 279314 transitions. Word has length 32 [2023-12-02 15:41:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:44,053 INFO L495 AbstractCegarLoop]: Abstraction has 177423 states and 279314 transitions. [2023-12-02 15:41:44,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 177423 states and 279314 transitions. [2023-12-02 15:41:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:41:44,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:44,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:44,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 15:41:44,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:44,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 721014462, now seen corresponding path program 1 times [2023-12-02 15:41:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432178373] [2023-12-02 15:41:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:44,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:44,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432178373] [2023-12-02 15:41:44,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432178373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:44,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:44,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:44,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682426780] [2023-12-02 15:41:44,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:44,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:44,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:44,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:44,444 INFO L87 Difference]: Start difference. First operand 177423 states and 279314 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:55,474 INFO L93 Difference]: Finished difference Result 530218 states and 834354 transitions. [2023-12-02 15:41:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:55,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2023-12-02 15:41:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:56,696 INFO L225 Difference]: With dead ends: 530218 [2023-12-02 15:41:56,697 INFO L226 Difference]: Without dead ends: 352796 [2023-12-02 15:41:57,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:57,438 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1118 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:57,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 2135 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:41:57,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352796 states. [2023-12-02 15:42:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352796 to 352783. [2023-12-02 15:42:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352783 states, 243208 states have (on average 1.4936844182757145) internal successors, (363276), 243213 states have internal predecessors, (363276), 95750 states have call successors, (95750), 13825 states have call predecessors, (95750), 13824 states have return successors, (95744), 95744 states have call predecessors, (95744), 95744 states have call successors, (95744) [2023-12-02 15:42:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352783 states to 352783 states and 554770 transitions. [2023-12-02 15:42:13,348 INFO L78 Accepts]: Start accepts. Automaton has 352783 states and 554770 transitions. Word has length 35 [2023-12-02 15:42:13,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:13,348 INFO L495 AbstractCegarLoop]: Abstraction has 352783 states and 554770 transitions. [2023-12-02 15:42:13,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:42:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 352783 states and 554770 transitions. [2023-12-02 15:42:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 15:42:13,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:13,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:13,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 15:42:13,350 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:13,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash -358534438, now seen corresponding path program 1 times [2023-12-02 15:42:13,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:13,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509039348] [2023-12-02 15:42:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:13,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:42:13,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:13,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509039348] [2023-12-02 15:42:13,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509039348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:13,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:13,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:42:13,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437256034] [2023-12-02 15:42:13,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:13,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:13,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:13,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:13,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:13,984 INFO L87 Difference]: Start difference. First operand 352783 states and 554770 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:42:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:36,149 INFO L93 Difference]: Finished difference Result 1056298 states and 1660722 transitions. [2023-12-02 15:42:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:36,150 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-02 15:42:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:38,985 INFO L225 Difference]: With dead ends: 1056298 [2023-12-02 15:42:38,985 INFO L226 Difference]: Without dead ends: 703516 [2023-12-02 15:42:40,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:40,258 INFO L413 NwaCegarLoop]: 1119 mSDtfsCounter, 1119 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:40,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 2153 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:42:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703516 states. [2023-12-02 15:43:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703516 to 703503. [2023-12-02 15:43:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703503 states, 484872 states have (on average 1.492080384101371) internal successors, (723468), 484877 states have internal predecessors, (723468), 190982 states have call successors, (190982), 27649 states have call predecessors, (190982), 27648 states have return successors, (190976), 190976 states have call predecessors, (190976), 190976 states have call successors, (190976) [2023-12-02 15:43:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703503 states to 703503 states and 1105426 transitions. [2023-12-02 15:43:14,656 INFO L78 Accepts]: Start accepts. Automaton has 703503 states and 1105426 transitions. Word has length 38 [2023-12-02 15:43:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:14,657 INFO L495 AbstractCegarLoop]: Abstraction has 703503 states and 1105426 transitions. [2023-12-02 15:43:14,657 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:43:14,657 INFO L276 IsEmpty]: Start isEmpty. Operand 703503 states and 1105426 transitions. [2023-12-02 15:43:14,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 15:43:14,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:14,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:43:14,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 15:43:14,659 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:43:14,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash -173508657, now seen corresponding path program 1 times [2023-12-02 15:43:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894040074] [2023-12-02 15:43:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:14,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:43:14,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:14,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894040074] [2023-12-02 15:43:14,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894040074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:43:14,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:43:14,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:43:14,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844785363] [2023-12-02 15:43:14,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:43:14,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:43:14,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:14,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:43:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:43:14,792 INFO L87 Difference]: Start difference. First operand 703503 states and 1105426 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)