./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:57:20,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:57:20,998 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:57:21,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:57:21,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:57:21,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:57:21,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:57:21,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:57:21,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:57:21,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:57:21,062 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:57:21,063 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:57:21,064 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:57:21,066 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:57:21,066 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:57:21,067 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:57:21,067 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:57:21,068 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:57:21,068 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:57:21,068 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:57:21,069 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:57:21,069 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:57:21,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:57:21,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:57:21,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:57:21,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:57:21,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:57:21,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:57:21,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:57:21,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:57:21,075 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:57:21,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:57:21,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:57:21,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:57:21,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:57:21,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:57:21,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:57:21,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:57:21,078 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:57:21,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:57:21,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:57:21,078 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:57:21,079 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:57:21,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:57:21,079 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_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 [2023-11-21 19:57:21,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:57:21,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:57:21,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:57:21,383 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:57:21,383 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:57:21,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-11-21 19:57:24,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:57:25,195 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:57:25,196 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-11-21 19:57:25,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/data/0ae68163d/86fa3f0ddffa4266b021bf1da06f602b/FLAG0c2e9f2a4 [2023-11-21 19:57:25,299 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/data/0ae68163d/86fa3f0ddffa4266b021bf1da06f602b [2023-11-21 19:57:25,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:57:25,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:57:25,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:57:25,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:57:25,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:57:25,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:57:25" (1/1) ... [2023-11-21 19:57:25,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6358c336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:25, skipping insertion in model container [2023-11-21 19:57:25,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:57:25" (1/1) ... [2023-11-21 19:57:25,600 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:57:27,937 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_445710ef-7951-46ea-a70b-07cea9f69d1b/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2023-11-21 19:57:28,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:57:28,138 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:57:28,845 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_445710ef-7951-46ea-a70b-07cea9f69d1b/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2023-11-21 19:57:28,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:57:29,030 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:57:29,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29 WrapperNode [2023-11-21 19:57:29,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:57:29,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:57:29,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:57:29,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:57:29,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:29,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:29,704 INFO L138 Inliner]: procedures = 170, calls = 7298, calls flagged for inlining = 68, calls inlined = 55, statements flattened = 18214 [2023-11-21 19:57:29,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:57:29,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:57:29,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:57:29,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:57:29,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:29,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:29,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:29,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:30,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:30,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:30,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:30,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:30,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:57:30,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:57:30,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:57:30,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:57:30,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (1/1) ... [2023-11-21 19:57:30,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:57:30,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:30,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:57:30,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445710ef-7951-46ea-a70b-07cea9f69d1b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:57:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2023-11-21 19:57:30,678 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2023-11-21 19:57:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2023-11-21 19:57:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2023-11-21 19:57:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:57:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-21 19:57:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-21 19:57:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2023-11-21 19:57:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2023-11-21 19:57:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2023-11-21 19:57:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2023-11-21 19:57:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 19:57:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:57:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2023-11-21 19:57:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2023-11-21 19:57:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:57:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2023-11-21 19:57:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2023-11-21 19:57:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2023-11-21 19:57:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2023-11-21 19:57:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2023-11-21 19:57:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2023-11-21 19:57:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2023-11-21 19:57:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2023-11-21 19:57:30,682 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 19:57:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 19:57:30,682 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2023-11-21 19:57:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2023-11-21 19:57:30,682 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2023-11-21 19:57:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2023-11-21 19:57:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:57:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-21 19:57:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-21 19:57:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2023-11-21 19:57:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2023-11-21 19:57:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 19:57:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 19:57:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2023-11-21 19:57:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2023-11-21 19:57:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2023-11-21 19:57:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2023-11-21 19:57:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2023-11-21 19:57:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2023-11-21 19:57:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2023-11-21 19:57:30,685 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2023-11-21 19:57:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 19:57:30,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 19:57:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-21 19:57:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-21 19:57:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2023-11-21 19:57:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2023-11-21 19:57:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2023-11-21 19:57:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2023-11-21 19:57:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-21 19:57:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-21 19:57:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-21 19:57:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-21 19:57:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2023-11-21 19:57:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2023-11-21 19:57:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:57:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:57:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:57:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2023-11-21 19:57:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2023-11-21 19:57:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2023-11-21 19:57:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2023-11-21 19:57:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2023-11-21 19:57:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2023-11-21 19:57:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2023-11-21 19:57:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2023-11-21 19:57:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-21 19:57:30,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-21 19:57:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:57:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2023-11-21 19:57:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2023-11-21 19:57:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2023-11-21 19:57:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2023-11-21 19:57:30,697 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2023-11-21 19:57:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2023-11-21 19:57:30,697 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2023-11-21 19:57:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2023-11-21 19:57:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2023-11-21 19:57:30,698 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2023-11-21 19:57:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:57:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:57:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2023-11-21 19:57:30,699 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2023-11-21 19:57:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 19:57:30,700 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 19:57:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2023-11-21 19:57:30,701 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2023-11-21 19:57:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2023-11-21 19:57:30,701 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2023-11-21 19:57:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2023-11-21 19:57:30,702 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2023-11-21 19:57:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:57:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:57:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2023-11-21 19:57:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2023-11-21 19:57:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2023-11-21 19:57:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2023-11-21 19:57:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:57:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-21 19:57:30,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-21 19:57:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2023-11-21 19:57:30,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2023-11-21 19:57:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 19:57:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2023-11-21 19:57:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2023-11-21 19:57:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:57:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:57:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2023-11-21 19:57:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2023-11-21 19:57:32,037 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:57:32,040 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:57:49,387 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:58:01,481 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:58:01,481 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:58:01,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:58:01 BoogieIcfgContainer [2023-11-21 19:58:01,485 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:58:01,488 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:58:01,488 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:58:01,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:58:01,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:57:25" (1/3) ... [2023-11-21 19:58:01,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd02a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:58:01, skipping insertion in model container [2023-11-21 19:58:01,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:29" (2/3) ... [2023-11-21 19:58:01,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd02a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:58:01, skipping insertion in model container [2023-11-21 19:58:01,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:58:01" (3/3) ... [2023-11-21 19:58:01,494 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-11-21 19:58:01,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:58:01,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:58:01,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:58:01,655 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;@53d0cdfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:58:01,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:58:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 5158 states, 3523 states have (on average 1.4445075219982968) internal successors, (5089), 3535 states have internal predecessors, (5089), 1584 states have call successors, (1584), 49 states have call predecessors, (1584), 49 states have return successors, (1584), 1583 states have call predecessors, (1584), 1584 states have call successors, (1584) [2023-11-21 19:58:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 19:58:01,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:01,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 19:58:01,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:58:01,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1175188005, now seen corresponding path program 1 times [2023-11-21 19:58:01,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:58:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252995631] [2023-11-21 19:58:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:01,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:58:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:58:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:58:02,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:58:02,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252995631] [2023-11-21 19:58:02,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252995631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:58:02,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:58:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:58:02,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792868054] [2023-11-21 19:58:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:58:02,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:58:02,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:58:02,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:58:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:58:03,011 INFO L87 Difference]: Start difference. First operand has 5158 states, 3523 states have (on average 1.4445075219982968) internal successors, (5089), 3535 states have internal predecessors, (5089), 1584 states have call successors, (1584), 49 states have call predecessors, (1584), 49 states have return successors, (1584), 1583 states have call predecessors, (1584), 1584 states have call successors, (1584) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:05,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:58:05,659 INFO L93 Difference]: Finished difference Result 10391 states and 16678 transitions. [2023-11-21 19:58:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:58:05,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 19:58:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:58:05,757 INFO L225 Difference]: With dead ends: 10391 [2023-11-21 19:58:05,757 INFO L226 Difference]: Without dead ends: 5232 [2023-11-21 19:58:05,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:58:05,880 INFO L413 NwaCegarLoop]: 7674 mSDtfsCounter, 7987 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7987 SdHoareTripleChecker+Valid, 7985 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:58:05,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7987 Valid, 7985 Invalid, 628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 19:58:05,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5232 states. [2023-11-21 19:58:07,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5232 to 5230. [2023-11-21 19:58:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 3574 states have (on average 1.4429210968102966) internal successors, (5157), 3582 states have internal predecessors, (5157), 1601 states have call successors, (1601), 55 states have call predecessors, (1601), 54 states have return successors, (1595), 1594 states have call predecessors, (1595), 1595 states have call successors, (1595) [2023-11-21 19:58:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 8353 transitions. [2023-11-21 19:58:07,864 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 8353 transitions. Word has length 6 [2023-11-21 19:58:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:58:07,864 INFO L495 AbstractCegarLoop]: Abstraction has 5230 states and 8353 transitions. [2023-11-21 19:58:07,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 8353 transitions. [2023-11-21 19:58:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 19:58:07,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:07,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:58:07,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:58:07,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:58:07,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2074097032, now seen corresponding path program 1 times [2023-11-21 19:58:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:58:07,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161250484] [2023-11-21 19:58:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:58:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat